2026-01-19 16:57:01 +03:00
46 changed files with 5270 additions and 29 deletions
--- a/.gitea/workflows/ci.yaml
+++ b/.gitea/workflows/ci.yaml
@@ -0,0 +1,121 @@
+name: CI/CD Pipeline
+
+on:
+  push:
+    branches:
+      - main
+      - master
+      - develop
+    tags:
+      - 'v*'
+  pull_request:
+    branches:
+      - main
+      - master
+
+jobs:
+  build:
+    name: Build and Test
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Setup .NET SDK
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: '8.0.x'
+
+      - name: Restore dependencies
+        run: dotnet restore
+
+      - name: Build class library
+        run: dotnet build classlib/classlib.csproj --configuration Release --no-restore
+
+      - name: Build test project
+        run: dotnet build classlib.tests/classlib.tests.csproj --configuration Release --no-restore
+
+      - name: Run tests
+        run: dotnet test classlib.tests/classlib.tests.csproj --configuration Release --no-build --verbosity normal --logger "trx;LogFileName=test-results.trx" --collect:"XPlat Code Coverage"
+
+      - name: Upload test results
+        uses: actions/upload-artifact@v4
+        if: always()
+        with:
+          name: test-results
+          path: classlib.tests/TestResults/
+          retention-days: 30
+
+  package:
+    name: Package Module
+    runs-on: ubuntu-latest
+    needs: build
+    if: github.event_name == 'push' && (github.ref == 'refs/heads/main' || github.ref == 'refs/heads/master' || startsWith(github.ref, 'refs/tags/v'))
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Setup .NET SDK
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: '8.0.x'
+
+      - name: Build Release
+        run: dotnet build classlib/classlib.csproj --configuration Release
+
+      - name: Create module package
+        run: |
+          mkdir -p output/ps.ipam
+          
+          # Copy compiled DLL
+          cp classlib/bin/Release/netstandard2.1/ps.ipam.dll output/ps.ipam/
+          
+          # Copy module manifest and related files
+          cp ps.ipam.psd1 output/ps.ipam/
+          cp ps.ipam.psm1 output/ps.ipam/
+          cp LICENSE output/ps.ipam/
+          cp README.md output/ps.ipam/
+          
+          # Copy types directory
+          cp -r types output/ps.ipam/
+          
+          # Copy functions directory
+          cp -r functions output/ps.ipam/
+          
+          # Copy images directory
+          cp -r images output/ps.ipam/
+
+      - name: Upload module artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: ps.ipam-module
+          path: output/ps.ipam/
+          retention-days: 90
+
+  release:
+    name: Create Release
+    runs-on: ubuntu-latest
+    needs: package
+    if: startsWith(github.ref, 'refs/tags/v')
+    steps:
+      - name: Download module artifact
+        uses: actions/download-artifact@v4
+        with:
+          name: ps.ipam-module
+          path: ps.ipam
+
+      - name: Create release archive
+        run: |
+          zip -r ps.ipam-${{ github.ref_name }}.zip ps.ipam/
+          tar -czvf ps.ipam-${{ github.ref_name }}.tar.gz ps.ipam/
+
+      - name: Create Gitea Release
+        uses: actions/gitea-release-action@v1
+        with:
+          token: ${{ secrets.TOKEN }}
+          files: |
+            ps.ipam-${{ github.ref_name }}.zip
+            ps.ipam-${{ github.ref_name }}.tar.gz
+          title: Release ${{ github.ref_name }}
+          draft: false
+          prerelease: ${{ contains(github.ref_name, '-') }}
--- a/21
+++ b/21
@@ -1,21 +0,0 @@
-pipeline {
-    agent {
-        label '.net7.0'
-    }
-    stages {
-        stage('Build classlib') {
-            steps {
-                sh '''cd classlib
-                dotnet build --no-incremental --force --configuration Release
-                dotnet publish -c Release'''
-                
-                contentReplace(configs: [fileContentReplaceConfig(configs: [fileContentReplaceItemConfig(replace: 'ModuleVersion = \'2.0.$BUILD_NUMBER\'', search: 'ModuleVersion = \'2.0\'')], fileEncoding: 'UTF-8', filePath: 'ps.ipam.psd1')])
-            }
-        }
-    }
-    post {
-        success {
-            archiveArtifacts artifacts: 'classlib/bin/Release/netstandard2.1/publish/*.dll, *.psd1, *.psm1, LICENSE, **/*.ps1xml, **/*.ps1', followSymlinks: false, onlyIfSuccessful: true
-        }
-    }
-}
--- a/classlib.tests/Cmdlets/GetAddressCmdletTests.cs
+++ b/classlib.tests/Cmdlets/GetAddressCmdletTests.cs
@@ -0,0 +1,323 @@
+namespace PS.IPAM.Tests.Cmdlets;
+
+using System.Net;
+using FluentAssertions;
+using PS.IPAM;
+using PS.IPAM.Cmdlets;
+using PS.IPAM.Helpers;
+using PS.IPAM.Tests.Mocks;
+using Xunit;
+
+/// <summary>
+/// Tests for the GetAddressCmdlet.
+/// Note: Full cmdlet testing with parameter sets requires a PowerShell runspace.
+/// These tests focus on verifying the cmdlet structure and the underlying RequestHelper functionality.
+/// </summary>
+[Collection("Sequential")]
+public class GetAddressCmdletTests : IDisposable
+{
+    private MockHttpMessageHandler? _mockHandler;
+
+    public GetAddressCmdletTests()
+    {
+        // Clean state before each test
+        SessionManager.CloseSession();
+        RequestHelper.TestHttpHandler = null;
+    }
+
+    public void Dispose()
+    {
+        // Clean up after each test
+        SessionManager.CloseSession();
+        RequestHelper.TestHttpHandler = null;
+        _mockHandler?.ForceDispose();
+    }
+
+    private void SetupSession()
+    {
+        SessionManager.CreateSessionWithToken("https://ipam.example.com", "testapp", "test-token");
+    }
+
+    private MockHttpMessageHandler SetupMockHandler()
+    {
+        _mockHandler = new MockHttpMessageHandler();
+        RequestHelper.TestHttpHandler = _mockHandler;
+        return _mockHandler;
+    }
+
+    [Fact]
+    public void GetAddressCmdlet_Exists()
+    {
+        // Verify the cmdlet class exists and can be instantiated
+        var cmdlet = new GetAddressCmdlet();
+        cmdlet.Should().NotBeNull();
+    }
+
+    [Fact]
+    public void GetAddressCmdlet_IdProperty_Exists()
+    {
+        var cmdlet = new GetAddressCmdlet();
+        cmdlet.Id = 42;
+        cmdlet.Id.Should().Be(42);
+    }
+
+    [Fact]
+    public void GetAddressCmdlet_IPProperty_Exists()
+    {
+        var cmdlet = new GetAddressCmdlet();
+        cmdlet.IP = IPAddress.Parse("192.168.1.100");
+        cmdlet.IP.Should().Be(IPAddress.Parse("192.168.1.100"));
+    }
+
+    [Fact]
+    public void GetAddressCmdlet_HostNameProperty_Exists()
+    {
+        var cmdlet = new GetAddressCmdlet();
+        cmdlet.HostName = "server01.example.com";
+        cmdlet.HostName.Should().Be("server01.example.com");
+    }
+
+    [Fact]
+    public void GetAddressCmdlet_HostBaseProperty_Exists()
+    {
+        var cmdlet = new GetAddressCmdlet();
+        cmdlet.HostBase = "server";
+        cmdlet.HostBase.Should().Be("server");
+    }
+
+    [Fact]
+    public void GetAddressCmdlet_TagIdProperty_Exists()
+    {
+        var cmdlet = new GetAddressCmdlet();
+        cmdlet.TagId = 2;
+        cmdlet.TagId.Should().Be(2);
+    }
+
+    [Fact]
+    public void GetAddressCmdlet_SubnetIdProperty_Exists()
+    {
+        var cmdlet = new GetAddressCmdlet();
+        cmdlet.SubnetId = 10;
+        cmdlet.SubnetId.Should().Be(10);
+    }
+
+    [Fact]
+    public void GetAddressCmdlet_SubnetCIDRProperty_Exists()
+    {
+        var cmdlet = new GetAddressCmdlet();
+        cmdlet.SubnetCIDR = "192.168.1.0/24";
+        cmdlet.SubnetCIDR.Should().Be("192.168.1.0/24");
+    }
+
+    // Test the underlying RequestHelper functionality that the cmdlet uses
+
+    [Fact]
+    public async Task RequestHelper_GetAddressById_ReturnsAddress()
+    {
+        // Arrange
+        SetupSession();
+        var handler = SetupMockHandler();
+        var addressJson = @"{
+            ""id"": 1,
+            ""subnetId"": 10,
+            ""ip"": ""192.168.1.100"",
+            ""hostname"": ""server01"",
+            ""description"": ""Test server""
+        }";
+        handler.WithSuccessResponse(addressJson);
+
+        // Act
+        var result = await RequestHelper.InvokeRequest(
+            "GET",
+            controllers.addresses,
+            types.Address,
+            null,
+            null,
+            new[] { "1" }
+        );
+
+        // Assert
+        result.Should().BeOfType<Address>();
+        var address = (Address)result!;
+        address.Id.Should().Be(1);
+        address.Ip.Should().Be("192.168.1.100");
+        address.Hostname.Should().Be("server01");
+    }
+
+    [Fact]
+    public async Task RequestHelper_GetAddressById_BuildsCorrectUri()
+    {
+        // Arrange
+        SetupSession();
+        var handler = SetupMockHandler();
+        handler.WithSuccessResponse(@"{""id"": 42, ""ip"": ""10.0.0.1""}");
+
+        // Act
+        await RequestHelper.InvokeRequest(
+            "GET",
+            controllers.addresses,
+            types.Address,
+            null,
+            null,
+            new[] { "42" }
+        );
+
+        // Assert
+        handler.LastRequest!.RequestUri!.ToString().Should().Contain("/addresses/42/");
+    }
+
+    [Fact]
+    public async Task RequestHelper_SearchByIP_BuildsCorrectUri()
+    {
+        // Arrange
+        SetupSession();
+        var handler = SetupMockHandler();
+        handler.WithSuccessResponse(@"{""id"": 1, ""ip"": ""192.168.1.50""}");
+
+        // Act
+        await RequestHelper.InvokeRequest(
+            "GET",
+            controllers.addresses,
+            types.Address,
+            null,
+            null,
+            new[] { "search", "192.168.1.50" }
+        );
+
+        // Assert
+        handler.LastRequest!.RequestUri!.ToString().Should().Contain("/addresses/search/192.168.1.50/");
+    }
+
+    [Fact]
+    public async Task RequestHelper_SearchByHostname_BuildsCorrectUri()
+    {
+        // Arrange
+        SetupSession();
+        var handler = SetupMockHandler();
+        handler.WithSuccessResponse(@"{""id"": 1, ""ip"": ""10.0.0.5"", ""hostname"": ""myserver.example.com""}");
+
+        // Act
+        await RequestHelper.InvokeRequest(
+            "GET",
+            controllers.addresses,
+            types.Address,
+            null,
+            null,
+            new[] { "search_hostname", "myserver.example.com" }
+        );
+
+        // Assert
+        handler.LastRequest!.RequestUri!.ToString().Should().Contain("/addresses/search_hostname/myserver.example.com/");
+    }
+
+    [Fact]
+    public async Task RequestHelper_GetSubnetAddresses_BuildsCorrectUri()
+    {
+        // Arrange
+        SetupSession();
+        var handler = SetupMockHandler();
+        handler.WithSuccessResponse(@"[{""id"": 1, ""ip"": ""192.168.1.1""}]");
+
+        // Act
+        await RequestHelper.InvokeRequest(
+            "GET",
+            controllers.subnets,
+            types.Address,
+            null,
+            null,
+            new[] { "10", "addresses" }
+        );
+
+        // Assert
+        handler.LastRequest!.RequestUri!.ToString().Should().Contain("/subnets/10/addresses/");
+    }
+
+    [Fact]
+    public async Task RequestHelper_GetAddressesByTag_BuildsCorrectUri()
+    {
+        // Arrange
+        SetupSession();
+        var handler = SetupMockHandler();
+        handler.WithSuccessResponse(@"[{""id"": 1, ""ip"": ""10.0.0.1"", ""tag"": 2}]");
+
+        // Act
+        await RequestHelper.InvokeRequest(
+            "GET",
+            controllers.addresses,
+            types.Address,
+            null,
+            null,
+            new[] { "tags", "2", "addresses" }
+        );
+
+        // Assert
+        handler.LastRequest!.RequestUri!.ToString().Should().Contain("/addresses/tags/2/addresses/");
+    }
+
+    [Fact]
+    public async Task RequestHelper_ReturnsMultipleAddresses()
+    {
+        // Arrange
+        SetupSession();
+        var handler = SetupMockHandler();
+        handler.WithSuccessResponse(@"[
+            {""id"": 1, ""ip"": ""192.168.1.1""},
+            {""id"": 2, ""ip"": ""192.168.1.2""},
+            {""id"": 3, ""ip"": ""192.168.1.3""}
+        ]");
+
+        // Act
+        var result = await RequestHelper.InvokeRequest(
+            "GET",
+            controllers.subnets,
+            types.Address,
+            null,
+            null,
+            new[] { "10", "addresses" }
+        );
+
+        // Assert
+        result.Should().BeAssignableTo<System.Collections.IEnumerable>();
+        var addresses = ((System.Collections.IEnumerable)result!).Cast<object>().ToList();
+        addresses.Should().HaveCount(3);
+        addresses.Should().AllBeOfType<Address>();
+    }
+
+    [Fact]
+    public async Task RequestHelper_With404Response_ReturnsNull()
+    {
+        // Arrange
+        SetupSession();
+        var handler = SetupMockHandler();
+        handler.WithNotFoundResponse();
+
+        // Act
+        var result = await RequestHelper.InvokeRequest(
+            "GET",
+            controllers.addresses,
+            types.Address,
+            null,
+            null,
+            new[] { "999" }
+        );
+
+        // Assert
+        result.Should().BeNull();
+    }
+
+    [Fact]
+    public async Task RequestHelper_WithNoSession_ThrowsException()
+    {
+        // Arrange - no session set up
+
+        // Act
+        var action = async () => await RequestHelper.InvokeRequest(
+            "GET",
+            controllers.addresses,
+            types.Address
+        );
+
+        // Assert
+        await action.Should().ThrowAsync<Exception>().WithMessage("No session available!");
+    }
+}
--- a/classlib.tests/Cmdlets/NewSessionCmdletTests.cs
+++ b/classlib.tests/Cmdlets/NewSessionCmdletTests.cs
@@ -0,0 +1,103 @@
+namespace PS.IPAM.Tests.Cmdlets;
+
+using FluentAssertions;
+using PS.IPAM;
+using PS.IPAM.Cmdlets;
+using PS.IPAM.Helpers;
+using Xunit;
+
+/// <summary>
+/// Tests for the NewSessionCmdlet.
+/// Note: Full cmdlet testing with parameter sets requires a PowerShell runspace.
+/// These tests focus on verifying the cmdlet structure and basic functionality.
+/// </summary>
+[Collection("Sequential")]
+public class NewSessionCmdletTests : IDisposable
+{
+    public NewSessionCmdletTests()
+    {
+        // Clean state before each test
+        SessionManager.CloseSession();
+    }
+
+    public void Dispose()
+    {
+        // Clean up after each test
+        SessionManager.CloseSession();
+    }
+
+    [Fact]
+    public void NewSessionCmdlet_Exists()
+    {
+        // Verify the cmdlet class exists and can be instantiated
+        var cmdlet = new NewSessionCmdlet();
+        cmdlet.Should().NotBeNull();
+    }
+
+    [Fact]
+    public void NewSessionCmdlet_URLProperty_Exists()
+    {
+        var cmdlet = new NewSessionCmdlet();
+        cmdlet.URL = "https://ipam.example.com";
+        cmdlet.URL.Should().Be("https://ipam.example.com");
+    }
+
+    [Fact]
+    public void NewSessionCmdlet_AppIDProperty_Exists()
+    {
+        var cmdlet = new NewSessionCmdlet();
+        cmdlet.AppID = "testapp";
+        cmdlet.AppID.Should().Be("testapp");
+    }
+
+    [Fact]
+    public void NewSessionCmdlet_TokenProperty_Exists()
+    {
+        var cmdlet = new NewSessionCmdlet();
+        cmdlet.Token = "my-api-token";
+        cmdlet.Token.Should().Be("my-api-token");
+    }
+
+    [Fact]
+    public void NewSessionCmdlet_CredentialsProperty_Exists()
+    {
+        var cmdlet = new NewSessionCmdlet();
+        cmdlet.Credentials = null;
+        cmdlet.Credentials.Should().BeNull();
+    }
+
+    [Fact]
+    public void NewSessionCmdlet_IgnoreSSLProperty_Exists()
+    {
+        var cmdlet = new NewSessionCmdlet();
+        // SwitchParameter defaults to false
+        cmdlet.IgnoreSSL.IsPresent.Should().BeFalse();
+        // Setting it to true
+        var switchParam = new System.Management.Automation.SwitchParameter(true);
+        cmdlet.IgnoreSSL = switchParam;
+        // Note: SwitchParameter is a struct, so getting the value back may not work as expected
+        // Just verify the property exists and can be set
+    }
+
+    [Fact]
+    public void SessionManager_CreateSessionWithToken_WorksCorrectly()
+    {
+        // This tests the underlying functionality that the cmdlet uses
+        var session = SessionManager.CreateSessionWithToken(
+            "https://ipam.example.com",
+            "testapp",
+            "my-api-token"
+        );
+
+        session.Should().NotBeNull();
+        session.URL.Should().Be("https://ipam.example.com");
+        session.AppID.Should().Be("testapp");
+        session.Token.Should().Be("my-api-token");
+        session.AuthType.Should().Be(AuthType.token);
+        session.Expires.Should().BeNull();
+        session.Credentials.Should().BeNull();
+
+        // Verify it was set as current session
+        SessionManager.CurrentSession.Should().BeSameAs(session);
+    }
+}
--- a/classlib.tests/Helpers/RequestHelperTests.cs
+++ b/classlib.tests/Helpers/RequestHelperTests.cs
@@ -0,0 +1,503 @@
+namespace PS.IPAM.Tests.Helpers;
+
+using System.Net;
+using FluentAssertions;
+using PS.IPAM;
+using PS.IPAM.Helpers;
+using PS.IPAM.Tests.Mocks;
+using Xunit;
+
+[Collection("Sequential")]
+public class RequestHelperTests : IDisposable
+{
+    private MockHttpMessageHandler? _mockHandler;
+
+    public RequestHelperTests()
+    {
+        // Clean state before each test
+        SessionManager.CloseSession();
+        RequestHelper.TestHttpHandler = null;
+    }
+
+    public void Dispose()
+    {
+        // Clean up after each test
+        SessionManager.CloseSession();
+        RequestHelper.TestHttpHandler = null;
+        _mockHandler?.ForceDispose();
+    }
+
+    private void SetupSession(AuthType authType = AuthType.token)
+    {
+        if (authType == AuthType.token)
+        {
+            SessionManager.CreateSessionWithToken("https://ipam.example.com", "testapp", "test-token");
+        }
+        else
+        {
+            // For credentials auth, we need to set up a session manually with future expiry
+            var session = new Session(
+                AuthType.credentials,
+                "cred-token",
+                "testapp",
+                "https://ipam.example.com",
+                DateTime.Now.AddHours(1),
+                null
+            );
+            SessionManager.CurrentSession = session;
+        }
+    }
+
+    private MockHttpMessageHandler SetupMockHandler()
+    {
+        _mockHandler = new MockHttpMessageHandler();
+        RequestHelper.TestHttpHandler = _mockHandler;
+        return _mockHandler;
+    }
+
+    [Fact]
+    public async Task InvokeRequest_WithNoSession_ThrowsException()
+    {
+        // Arrange - no session set up
+
+        // Act
+        var action = async () => await RequestHelper.InvokeRequest("GET", controllers.addresses);
+
+        // Assert
+        await action.Should().ThrowAsync<Exception>().WithMessage("No session available!");
+    }
+
+    [Fact]
+    public async Task InvokeRequest_WithValidSession_BuildsCorrectUri()
+    {
+        // Arrange
+        SetupSession();
+        var handler = SetupMockHandler();
+        handler.WithSuccessResponse("{\"id\":1,\"ip\":\"192.168.1.1\"}");
+
+        // Act
+        await RequestHelper.InvokeRequest("GET", controllers.addresses, types.Address, null, null, new[] { "1" });
+
+        // Assert
+        handler.LastRequest.Should().NotBeNull();
+        handler.LastRequest!.RequestUri!.ToString().Should().Be("https://ipam.example.com/api/testapp/addresses/1/");
+    }
+
+    [Fact]
+    public async Task InvokeRequest_WithSubController_BuildsCorrectUri()
+    {
+        // Arrange
+        SetupSession();
+        var handler = SetupMockHandler();
+        handler.WithSuccessResponse("[]");
+
+        // Act
+        await RequestHelper.InvokeRequest("GET", controllers.subnets, null, subcontrollers.tags, null, new[] { "1" });
+
+        // Assert
+        handler.LastRequest!.RequestUri!.ToString().Should().Contain("/subnets/tags/1/");
+    }
+
+    [Fact]
+    public async Task InvokeRequest_WithTokenAuth_AddsPhpipamTokenHeader()
+    {
+        // Arrange
+        SetupSession(AuthType.token);
+        var handler = SetupMockHandler();
+        handler.WithSuccessResponse("{}");
+
+        // Act
+        await RequestHelper.InvokeRequest("GET", controllers.addresses);
+
+        // Assert
+        handler.GetLastRequestHeader("phpipam-token").Should().Be("test-token");
+    }
+
+    [Fact]
+    public async Task InvokeRequest_WithCredentialsAuth_AddsTokenHeader()
+    {
+        // Arrange
+        SetupSession(AuthType.credentials);
+        var handler = SetupMockHandler();
+        handler.WithSuccessResponse("{}");
+
+        // Act
+        await RequestHelper.InvokeRequest("GET", controllers.addresses);
+
+        // Assert
+        handler.GetLastRequestHeader("token").Should().Be("cred-token");
+    }
+
+    [Fact]
+    public async Task InvokeRequest_GetMethod_UsesHttpGet()
+    {
+        // Arrange
+        SetupSession();
+        var handler = SetupMockHandler();
+        handler.WithSuccessResponse("{}");
+
+        // Act
+        await RequestHelper.InvokeRequest("GET", controllers.addresses);
+
+        // Assert
+        handler.LastRequest!.Method.Should().Be(HttpMethod.Get);
+    }
+
+    [Fact]
+    public async Task InvokeRequest_PostMethod_UsesHttpPost()
+    {
+        // Arrange
+        SetupSession();
+        var handler = SetupMockHandler();
+        handler.WithSuccessResponse("{\"id\":1}");
+
+        // Act
+        await RequestHelper.InvokeRequest("POST", controllers.addresses, null, null, new { ip = "10.0.0.1" });
+
+        // Assert
+        handler.LastRequest!.Method.Should().Be(HttpMethod.Post);
+    }
+
+    [Fact]
+    public async Task InvokeRequest_PatchMethod_UsesHttpPatch()
+    {
+        // Arrange
+        SetupSession();
+        var handler = SetupMockHandler();
+        handler.WithSuccessResponse("{\"id\":1}");
+
+        // Act
+        await RequestHelper.InvokeRequest("PATCH", controllers.addresses, null, null, new { description = "updated" }, new[] { "1" });
+
+        // Assert
+        handler.LastRequest!.Method.Should().Be(new HttpMethod("PATCH"));
+    }
+
+    [Fact]
+    public async Task InvokeRequest_DeleteMethod_UsesHttpDelete()
+    {
+        // Arrange
+        SetupSession();
+        var handler = SetupMockHandler();
+        handler.WithSuccessResponse("{}");
+
+        // Act
+        await RequestHelper.InvokeRequest("DELETE", controllers.addresses, null, null, null, new[] { "1" });
+
+        // Assert
+        handler.LastRequest!.Method.Should().Be(HttpMethod.Delete);
+    }
+
+    [Fact]
+    public async Task InvokeRequest_With404Response_ReturnsNull()
+    {
+        // Arrange
+        SetupSession();
+        var handler = SetupMockHandler();
+        handler.WithNotFoundResponse();
+
+        // Act
+        var result = await RequestHelper.InvokeRequest("GET", controllers.addresses, types.Address, null, null, new[] { "999" });
+
+        // Assert
+        result.Should().BeNull();
+    }
+
+    [Fact]
+    public async Task InvokeRequest_WithErrorResponse_ThrowsHttpRequestException()
+    {
+        // Arrange
+        SetupSession();
+        var handler = SetupMockHandler();
+        handler.WithErrorResponse(HttpStatusCode.InternalServerError, "Server error");
+
+        // Act
+        var action = async () => await RequestHelper.InvokeRequest("GET", controllers.addresses);
+
+        // Assert
+        await action.Should().ThrowAsync<HttpRequestException>();
+    }
+
+    [Fact]
+    public async Task InvokeRequest_WithAddressType_ReturnsAddressObject()
+    {
+        // Arrange
+        SetupSession();
+        var handler = SetupMockHandler();
+        var addressJson = @"{
+            ""id"": 1,
+            ""subnetId"": 10,
+            ""ip"": ""192.168.1.100"",
+            ""is_gateway"": false,
+            ""description"": ""Test server"",
+            ""hostname"": ""server01"",
+            ""mac"": ""00:11:22:33:44:55"",
+            ""owner"": ""admin"",
+            ""tag"": 2,
+            ""deviceId"": 0,
+            ""location"": """",
+            ""port"": """",
+            ""note"": """",
+            ""lastSeen"": null,
+            ""excludePing"": false,
+            ""PTRignore"": false,
+            ""PTR"": 0,
+            ""firewallAddressObject"": """",
+            ""editDate"": null,
+            ""customer_id"": 0
+        }";
+        handler.WithSuccessResponse(addressJson);
+
+        // Act
+        var result = await RequestHelper.InvokeRequest("GET", controllers.addresses, types.Address, null, null, new[] { "1" });
+
+        // Assert
+        result.Should().BeOfType<Address>();
+        var address = (Address)result!;
+        address.Id.Should().Be(1);
+        address.Ip.Should().Be("192.168.1.100");
+        address.Hostname.Should().Be("server01");
+    }
+
+    [Fact]
+    public async Task InvokeRequest_WithAddressArray_ReturnsListOfAddresses()
+    {
+        // Arrange
+        SetupSession();
+        var handler = SetupMockHandler();
+        var addressArrayJson = @"[
+            {""id"": 1, ""subnetId"": 10, ""ip"": ""192.168.1.1"", ""hostname"": ""host1""},
+            {""id"": 2, ""subnetId"": 10, ""ip"": ""192.168.1.2"", ""hostname"": ""host2""}
+        ]";
+        handler.WithSuccessResponse(addressArrayJson);
+
+        // Act
+        var result = await RequestHelper.InvokeRequest("GET", controllers.subnets, types.Address, null, null, new[] { "10", "addresses" });
+
+        // Assert
+        result.Should().BeAssignableTo<IEnumerable<object>>();
+        var addresses = ((IEnumerable<object>)result!).ToList();
+        addresses.Should().HaveCount(2);
+        addresses[0].Should().BeOfType<Address>();
+        ((Address)addresses[0]).Ip.Should().Be("192.168.1.1");
+    }
+
+    [Fact]
+    public async Task InvokeRequest_WithVlanType_ReturnsVlanObject()
+    {
+        // Arrange
+        SetupSession();
+        var handler = SetupMockHandler();
+        var vlanJson = @"{
+            ""vlanId"": 100,
+            ""domainId"": 1,
+            ""name"": ""Production"",
+            ""number"": 100,
+            ""description"": ""Production VLAN"",
+            ""editDate"": null,
+            ""customer_id"": 0
+        }";
+        handler.WithSuccessResponse(vlanJson);
+
+        // Act
+        var result = await RequestHelper.InvokeRequest("GET", controllers.vlan, types.Vlan, null, null, new[] { "100" });
+
+        // Assert
+        result.Should().BeOfType<Vlan>();
+        var vlan = (Vlan)result!;
+        vlan.Name.Should().Be("Production");
+        vlan.Number.Should().Be(100);
+    }
+
+    [Fact]
+    public async Task InvokeRequest_WithSubnetworkType_ReturnsSubnetworkObject()
+    {
+        // Arrange
+        SetupSession();
+        var handler = SetupMockHandler();
+        var subnetJson = @"{
+            ""id"": 1,
+            ""subnet"": ""192.168.1.0"",
+            ""mask"": 24,
+            ""sectionId"": 1,
+            ""description"": ""Test subnet"",
+            ""linked_subnet"": """",
+            ""firewallAddressObject"": """",
+            ""vrfId"": 0,
+            ""masterSubnetId"": 0,
+            ""allowRequests"": false,
+            ""vlanId"": 100,
+            ""showName"": false,
+            ""deviceId"": 0,
+            ""permissions"": """",
+            ""pingSubnet"": false,
+            ""discoverSubnet"": false,
+            ""resolveDNS"": false,
+            ""DNSrecursive"": false,
+            ""DNSrecords"": false,
+            ""nameserverId"": 0,
+            ""scanAgent"": false,
+            ""isFolder"": false,
+            ""isFull"": false,
+            ""isPool"": false,
+            ""state"": 1,
+            ""threshold"": 0,
+            ""location"": 0,
+            ""editDate"": null,
+            ""lastScan"": null,
+            ""lastDiscovery"": null,
+            ""calculation"": {}
+        }";
+        handler.WithSuccessResponse(subnetJson);
+
+        // Act
+        var result = await RequestHelper.InvokeRequest("GET", controllers.subnets, types.Subnetwork, null, null, new[] { "1" });
+
+        // Assert
+        result.Should().BeOfType<Subnetwork>();
+        var subnet = (Subnetwork)result!;
+        subnet.Subnet.Should().Be("192.168.1.0");
+        subnet.Mask.Should().Be(24);
+        subnet.GetCIDR().Should().Be("192.168.1.0/24");
+    }
+
+    [Fact]
+    public async Task InvokeRequest_WithSectionType_ReturnsSectionObject()
+    {
+        // Arrange
+        SetupSession();
+        var handler = SetupMockHandler();
+        var sectionJson = @"{
+            ""id"": 1,
+            ""name"": ""Production"",
+            ""description"": ""Production section"",
+            ""masterSection"": 0,
+            ""permissions"": """",
+            ""strictMode"": false,
+            ""subnetOrdering"": ""default"",
+            ""order"": 1,
+            ""editDate"": null,
+            ""showSubnet"": true,
+            ""showVlan"": true,
+            ""showVRF"": false,
+            ""showSupernetOnly"": false,
+            ""DNS"": 0
+        }";
+        handler.WithSuccessResponse(sectionJson);
+
+        // Act
+        var result = await RequestHelper.InvokeRequest("GET", controllers.sections, types.Section, null, null, new[] { "1" });
+
+        // Assert
+        result.Should().BeOfType<Section>();
+        var section = (Section)result!;
+        section.Name.Should().Be("Production");
+    }
+
+    [Fact]
+    public async Task InvokeRequest_WithCustomFields_ParsesExtendedData()
+    {
+        // Arrange
+        SetupSession();
+        var handler = SetupMockHandler();
+        var addressJson = @"{
+            ""id"": 1,
+            ""subnetId"": 10,
+            ""ip"": ""192.168.1.100"",
+            ""hostname"": ""server01"",
+            ""custom_environment"": ""production"",
+            ""custom_owner"": ""team-a""
+        }";
+        handler.WithSuccessResponse(addressJson);
+
+        // Act
+        var result = await RequestHelper.InvokeRequest("GET", controllers.addresses, types.Address, null, null, new[] { "1" });
+
+        // Assert
+        var address = (Address)result!;
+        address.ExtendedData.Should().NotBeNull();
+        var extendedData = (Dictionary<string, object>)address.ExtendedData!;
+        extendedData.Should().ContainKey("custom_environment");
+        extendedData.Should().ContainKey("custom_owner");
+    }
+
+    [Fact]
+    public async Task InvokeRequest_WithNoType_ReturnsDynamicData()
+    {
+        // Arrange
+        SetupSession();
+        var handler = SetupMockHandler();
+        handler.WithSuccessResponse(@"{""some"": ""data""}");
+
+        // Act
+        var result = await RequestHelper.InvokeRequest("GET", controllers.tools);
+
+        // Assert
+        result.Should().NotBeNull();
+    }
+
+    [Fact]
+    public async Task InvokeRequest_PostWithParameters_SerializesJsonBody()
+    {
+        // Arrange
+        SetupSession();
+        var handler = SetupMockHandler();
+        handler.WithSuccessResponse(@"{""id"": 1}");
+
+        var parameters = new { ip = "10.0.0.1", subnetId = 5, description = "New address" };
+
+        // Act
+        await RequestHelper.InvokeRequest("POST", controllers.addresses, null, null, parameters);
+
+        // Assert
+        handler.LastRequest!.Content.Should().NotBeNull();
+        var content = await handler.LastRequest.Content!.ReadAsStringAsync();
+        content.Should().Contain("10.0.0.1");
+        content.Should().Contain("subnetId");
+    }
+
+    [Fact]
+    public async Task InvokeRequest_SetsAcceptJsonHeader()
+    {
+        // Arrange
+        SetupSession();
+        var handler = SetupMockHandler();
+        handler.WithSuccessResponse("{}");
+
+        // Act
+        await RequestHelper.InvokeRequest("GET", controllers.addresses);
+
+        // Assert
+        handler.LastRequest!.Headers.Accept.Should().Contain(h => h.MediaType == "application/json");
+    }
+
+    [Fact]
+    public async Task InvokeRequest_WithEmptyResponse_ReturnsNull()
+    {
+        // Arrange
+        SetupSession();
+        var handler = SetupMockHandler();
+        handler.WithResponse(HttpStatusCode.OK, "", "application/json");
+
+        // Act
+        var result = await RequestHelper.InvokeRequest("GET", controllers.addresses);
+
+        // Assert
+        result.Should().BeNull();
+    }
+
+    [Fact]
+    public async Task InvokeRequest_WithNullDataInResponse_ReturnsNull()
+    {
+        // Arrange
+        SetupSession();
+        var handler = SetupMockHandler();
+        handler.WithJsonResponse(@"{""code"": 200, ""success"": true, ""data"": null}");
+
+        // Act
+        var result = await RequestHelper.InvokeRequest("GET", controllers.addresses, types.Address);
+
+        // Assert
+        result.Should().BeNull();
+    }
+}
--- a/classlib.tests/Helpers/SessionManagerTests.cs
+++ b/classlib.tests/Helpers/SessionManagerTests.cs
@@ -0,0 +1,193 @@
+namespace PS.IPAM.Tests.Helpers;
+
+using FluentAssertions;
+using PS.IPAM;
+using PS.IPAM.Helpers;
+using Xunit;
+
+[Collection("Sequential")]
+public class SessionManagerTests : IDisposable
+{
+    public SessionManagerTests()
+    {
+        // Ensure clean state before each test
+        SessionManager.CloseSession();
+    }
+
+    public void Dispose()
+    {
+        // Clean up after each test
+        SessionManager.CloseSession();
+    }
+
+    [Fact]
+    public void TestSession_WhenNoSession_ReturnsNoToken()
+    {
+        // Arrange
+        SessionManager.CurrentSession = null;
+
+        // Act
+        var result = SessionManager.TestSession();
+
+        // Assert
+        result.Should().Be("NoToken");
+    }
+
+    [Fact]
+    public void TestSession_WhenSessionWithNullExpires_ReturnsValid()
+    {
+        // Arrange
+        var session = new Session(AuthType.token, "test-token", "app", "https://test.com", null, null);
+        SessionManager.CurrentSession = session;
+
+        // Act
+        var result = SessionManager.TestSession();
+
+        // Assert
+        result.Should().Be("Valid");
+    }
+
+    [Fact]
+    public void TestSession_WhenSessionNotExpired_ReturnsValid()
+    {
+        // Arrange
+        var futureExpiry = DateTime.Now.AddHours(1);
+        var session = new Session(AuthType.credentials, "test-token", "app", "https://test.com", futureExpiry, null);
+        SessionManager.CurrentSession = session;
+
+        // Act
+        var result = SessionManager.TestSession();
+
+        // Assert
+        result.Should().Be("Valid");
+    }
+
+    [Fact]
+    public void TestSession_WhenSessionExpired_ReturnsExpired()
+    {
+        // Arrange
+        var pastExpiry = DateTime.Now.AddHours(-1);
+        var session = new Session(AuthType.credentials, "test-token", "app", "https://test.com", pastExpiry, null);
+        SessionManager.CurrentSession = session;
+
+        // Act
+        var result = SessionManager.TestSession();
+
+        // Assert
+        result.Should().Be("Expired");
+    }
+
+    [Fact]
+    public void CreateSessionWithToken_CreatesValidSession()
+    {
+        // Arrange
+        var url = "https://ipam.example.com";
+        var appId = "myApp";
+        var token = "static-api-token";
+
+        // Act
+        var session = SessionManager.CreateSessionWithToken(url, appId, token);
+
+        // Assert
+        session.Should().NotBeNull();
+        session.URL.Should().Be(url);
+        session.AppID.Should().Be(appId);
+        session.Token.Should().Be(token);
+        session.AuthType.Should().Be(AuthType.token);
+        session.Expires.Should().BeNull();
+        session.Credentials.Should().BeNull();
+    }
+
+    [Fact]
+    public void CreateSessionWithToken_SetsCurrentSession()
+    {
+        // Arrange
+        var url = "https://ipam.example.com";
+        var appId = "myApp";
+        var token = "api-token";
+
+        // Act
+        var session = SessionManager.CreateSessionWithToken(url, appId, token);
+
+        // Assert
+        SessionManager.CurrentSession.Should().BeSameAs(session);
+    }
+
+    [Fact]
+    public void CloseSession_ClearsCurrentSession()
+    {
+        // Arrange
+        SessionManager.CreateSessionWithToken("https://test.com", "app", "token");
+        SessionManager.CurrentSession.Should().NotBeNull();
+
+        // Act
+        SessionManager.CloseSession();
+
+        // Assert
+        SessionManager.CurrentSession.Should().BeNull();
+    }
+
+    [Fact]
+    public void CloseSession_WhenNoSession_DoesNotThrow()
+    {
+        // Arrange
+        SessionManager.CurrentSession = null;
+
+        // Act
+        var action = () => SessionManager.CloseSession();
+
+        // Assert
+        action.Should().NotThrow();
+    }
+
+    [Fact]
+    public void CurrentSession_CanBeSetDirectly()
+    {
+        // Arrange
+        var session = new Session(AuthType.token, "token", "app", "https://test.com", null, null);
+
+        // Act
+        SessionManager.CurrentSession = session;
+
+        // Assert
+        SessionManager.CurrentSession.Should().BeSameAs(session);
+    }
+
+    [Fact]
+    public void CreateHttpClient_WithoutIgnoreSsl_ReturnsHttpClient()
+    {
+        // Act
+        using var client = SessionManager.CreateHttpClient(false);
+
+        // Assert
+        client.Should().NotBeNull();
+        client.Should().BeOfType<HttpClient>();
+    }
+
+    [Fact]
+    public void CreateHttpClient_WithIgnoreSsl_ReturnsHttpClient()
+    {
+        // Act
+        using var client = SessionManager.CreateHttpClient(true);
+
+        // Assert
+        client.Should().NotBeNull();
+        client.Should().BeOfType<HttpClient>();
+    }
+
+    [Fact]
+    public void CreateSessionWithToken_ReplacesExistingSession()
+    {
+        // Arrange
+        SessionManager.CreateSessionWithToken("https://old.com", "oldApp", "oldToken");
+
+        // Act
+        var newSession = SessionManager.CreateSessionWithToken("https://new.com", "newApp", "newToken");
+
+        // Assert
+        SessionManager.CurrentSession.Should().BeSameAs(newSession);
+        SessionManager.CurrentSession!.URL.Should().Be("https://new.com");
+        SessionManager.CurrentSession.AppID.Should().Be("newApp");
+        SessionManager.CurrentSession.Token.Should().Be("newToken");
+    }
+}
--- a/classlib.tests/Mocks/CmdletTestHelper.cs
+++ b/classlib.tests/Mocks/CmdletTestHelper.cs
@@ -0,0 +1,139 @@
+namespace PS.IPAM.Tests.Mocks;
+
+using System.Management.Automation;
+using System.Management.Automation.Host;
+using System.Reflection;
+
+/// <summary>
+/// Helper class for testing PowerShell cmdlets.
+/// </summary>
+public class CmdletTestHelper<T> : IDisposable where T : PSCmdlet, new()
+{
+    private readonly T _cmdlet;
+    private readonly List<object> _output = new();
+    private readonly List<ErrorRecord> _errors = new();
+    private bool _disposed;
+
+    public CmdletTestHelper()
+    {
+        _cmdlet = new T();
+    }
+
+    /// <summary>
+    /// Gets the cmdlet instance for setting parameters.
+    /// </summary>
+    public T Cmdlet => _cmdlet;
+
+    /// <summary>
+    /// Gets the output objects written by the cmdlet.
+    /// </summary>
+    public IReadOnlyList<object> Output => _output.AsReadOnly();
+
+    /// <summary>
+    /// Gets the errors written by the cmdlet.
+    /// </summary>
+    public IReadOnlyList<ErrorRecord> Errors => _errors.AsReadOnly();
+
+    /// <summary>
+    /// Gets whether any errors were written.
+    /// </summary>
+    public bool HasErrors => _errors.Count > 0;
+
+    /// <summary>
+    /// Invokes the cmdlet and captures output.
+    /// </summary>
+    public void Invoke()
+    {
+        // Use reflection to call the protected ProcessRecord method
+        var processMethod = typeof(T).GetMethod("ProcessRecord",
+            BindingFlags.NonPublic | BindingFlags.Instance);
+
+        if (processMethod == null)
+        {
+            throw new InvalidOperationException("ProcessRecord method not found on cmdlet.");
+        }
+
+        // Set up a mock command runtime to capture output
+        var runtime = new MockCommandRuntime(_output, _errors);
+        var runtimeProperty = typeof(Cmdlet).GetProperty("CommandRuntime",
+            BindingFlags.Public | BindingFlags.Instance);
+
+        runtimeProperty?.SetValue(_cmdlet, runtime);
+
+        // Invoke the method
+        try
+        {
+            processMethod.Invoke(_cmdlet, null);
+        }
+        catch (TargetInvocationException ex) when (ex.InnerException != null)
+        {
+            // Unwrap the exception
+            throw ex.InnerException;
+        }
+    }
+
+    public void Dispose()
+    {
+        if (!_disposed)
+        {
+            _disposed = true;
+        }
+    }
+}
+
+/// <summary>
+/// Mock implementation of ICommandRuntime for capturing cmdlet output.
+/// This is a minimal implementation that only handles the methods we need for testing.
+/// </summary>
+internal class MockCommandRuntime : ICommandRuntime
+{
+    private readonly List<object> _output;
+    private readonly List<ErrorRecord> _errors;
+
+    public MockCommandRuntime(List<object> output, List<ErrorRecord> errors)
+    {
+        _output = output;
+        _errors = errors;
+    }
+
+    public PSHost Host => null!;
+    public PSTransactionContext CurrentPSTransaction => null!;
+
+    public bool ShouldContinue(string query, string caption) => true;
+    public bool ShouldContinue(string query, string caption, ref bool yesToAll, ref bool noToAll) => true;
+    public bool ShouldProcess(string target) => true;
+    public bool ShouldProcess(string target, string action) => true;
+    public bool ShouldProcess(string verboseDescription, string verboseWarning, string caption) => true;
+    public bool ShouldProcess(string verboseDescription, string verboseWarning, string caption, out ShouldProcessReason shouldProcessReason)
+    {
+        shouldProcessReason = ShouldProcessReason.None;
+        return true;
+    }
+
+    public bool TransactionAvailable() => false;
+
+    public void ThrowTerminatingError(ErrorRecord errorRecord) => throw errorRecord.Exception;
+
+    public void WriteCommandDetail(string text) { }
+    public void WriteDebug(string text) { }
+    public void WriteError(ErrorRecord errorRecord) => _errors.Add(errorRecord);
+    public void WriteObject(object sendToPipeline) => _output.Add(sendToPipeline);
+    public void WriteObject(object sendToPipeline, bool enumerateCollection)
+    {
+        if (enumerateCollection && sendToPipeline is System.Collections.IEnumerable enumerable)
+        {
+            foreach (var item in enumerable)
+            {
+                _output.Add(item);
+            }
+        }
+        else
+        {
+            _output.Add(sendToPipeline);
+        }
+    }
+    public void WriteProgress(ProgressRecord progressRecord) { }
+    public void WriteProgress(long sourceId, ProgressRecord progressRecord) { }
+    public void WriteVerbose(string text) { }
+    public void WriteWarning(string text) { }
+}
--- a/classlib.tests/Mocks/MockHttpMessageHandler.cs
+++ b/classlib.tests/Mocks/MockHttpMessageHandler.cs
@@ -0,0 +1,172 @@
+namespace PS.IPAM.Tests.Mocks;
+
+using System.Net;
+
+/// <summary>
+/// A mock HTTP message handler for testing HTTP requests without making actual network calls.
+/// This handler does not dispose itself when the HttpClient is disposed, allowing reuse in tests.
+/// </summary>
+public class MockHttpMessageHandler : HttpMessageHandler
+{
+    private readonly Queue<MockResponse> _responses = new();
+    private readonly List<HttpRequestMessage> _requests = new();
+    private bool _disposed = false;
+
+    /// <summary>
+    /// Gets all requests that were sent through this handler.
+    /// </summary>
+    public IReadOnlyList<HttpRequestMessage> Requests => _requests.AsReadOnly();
+
+    /// <summary>
+    /// Gets the last request that was sent through this handler.
+    /// </summary>
+    public HttpRequestMessage? LastRequest => _requests.LastOrDefault();
+
+    /// <summary>
+    /// Queues a response to be returned for the next request.
+    /// </summary>
+    public MockHttpMessageHandler WithResponse(HttpStatusCode statusCode, string content, string contentType = "application/json")
+    {
+        _responses.Enqueue(new MockResponse(statusCode, content, contentType));
+        return this;
+    }
+
+    /// <summary>
+    /// Queues a successful JSON response.
+    /// </summary>
+    public MockHttpMessageHandler WithJsonResponse(string jsonContent)
+    {
+        return WithResponse(HttpStatusCode.OK, jsonContent, "application/json");
+    }
+
+    /// <summary>
+    /// Queues a successful response with phpIPAM-style wrapper.
+    /// </summary>
+    public MockHttpMessageHandler WithSuccessResponse(string dataJson)
+    {
+        var response = $"{{\"code\":200,\"success\":true,\"data\":{dataJson}}}";
+        return WithJsonResponse(response);
+    }
+
+    /// <summary>
+    /// Queues a 404 Not Found response.
+    /// </summary>
+    public MockHttpMessageHandler WithNotFoundResponse()
+    {
+        return WithResponse(HttpStatusCode.NotFound, "{\"code\":404,\"success\":false,\"message\":\"Not found\"}", "application/json");
+    }
+
+    /// <summary>
+    /// Queues an error response.
+    /// </summary>
+    public MockHttpMessageHandler WithErrorResponse(HttpStatusCode statusCode, string message)
+    {
+        var response = $"{{\"code\":{(int)statusCode},\"success\":false,\"message\":\"{message}\"}}";
+        return WithResponse(statusCode, response, "application/json");
+    }
+
+    /// <summary>
+    /// Queues an exception to be thrown on the next request.
+    /// </summary>
+    public MockHttpMessageHandler WithException(Exception exception)
+    {
+        _responses.Enqueue(new MockResponse(exception));
+        return this;
+    }
+
+    protected override Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
+    {
+        if (_disposed)
+        {
+            throw new ObjectDisposedException(nameof(MockHttpMessageHandler));
+        }
+
+        _requests.Add(request);
+
+        if (_responses.Count == 0)
+        {
+            throw new InvalidOperationException("No mock response configured. Call WithResponse() before making requests.");
+        }
+
+        var mockResponse = _responses.Dequeue();
+
+        if (mockResponse.Exception != null)
+        {
+            throw mockResponse.Exception;
+        }
+
+        var response = new HttpResponseMessage(mockResponse.StatusCode)
+        {
+            Content = new StringContent(mockResponse.Content, System.Text.Encoding.UTF8, mockResponse.ContentType),
+            RequestMessage = request
+        };
+
+        return Task.FromResult(response);
+    }
+
+    protected override void Dispose(bool disposing)
+    {
+        // Don't actually dispose - allow reuse in tests
+        // The test itself is responsible for cleanup
+    }
+
+    /// <summary>
+    /// Actually disposes the handler. Call this in test cleanup.
+    /// </summary>
+    public void ForceDispose()
+    {
+        _disposed = true;
+        base.Dispose(true);
+    }
+
+    /// <summary>
+    /// Verifies that a request was made to the expected URL.
+    /// </summary>
+    public bool WasRequestMadeTo(string urlContains)
+    {
+        return _requests.Any(r => r.RequestUri?.ToString().Contains(urlContains) == true);
+    }
+
+    /// <summary>
+    /// Verifies that a request with the expected method was made.
+    /// </summary>
+    public bool WasRequestMadeWithMethod(HttpMethod method)
+    {
+        return _requests.Any(r => r.Method == method);
+    }
+
+    /// <summary>
+    /// Gets the value of a header from the last request.
+    /// </summary>
+    public string? GetLastRequestHeader(string headerName)
+    {
+        if (LastRequest?.Headers.TryGetValues(headerName, out var values) == true)
+        {
+            return values.FirstOrDefault();
+        }
+        return null;
+    }
+
+    private class MockResponse
+    {
+        public HttpStatusCode StatusCode { get; }
+        public string Content { get; }
+        public string ContentType { get; }
+        public Exception? Exception { get; }
+
+        public MockResponse(HttpStatusCode statusCode, string content, string contentType)
+        {
+            StatusCode = statusCode;
+            Content = content;
+            ContentType = contentType;
+        }
+
+        public MockResponse(Exception exception)
+        {
+            Exception = exception;
+            StatusCode = HttpStatusCode.InternalServerError;
+            Content = string.Empty;
+            ContentType = string.Empty;
+        }
+    }
+}
--- a/classlib.tests/Models/AddressTests.cs
+++ b/classlib.tests/Models/AddressTests.cs
@@ -0,0 +1,116 @@
+namespace PS.IPAM.Tests.Models;
+
+using FluentAssertions;
+using PS.IPAM;
+using Xunit;
+
+public class AddressTests
+{
+    [Fact]
+    public void Constructor_SetsAllProperties()
+    {
+        // Arrange
+        var id = 1;
+        var subnetId = 10;
+        var ip = "192.168.1.100";
+        var isGateway = true;
+        var description = "Test server";
+        var hostname = "server01.example.com";
+        var mac = "00:11:22:33:44:55";
+        var owner = "admin";
+        var tagId = 2;
+        var deviceId = 5;
+        var location = "DC1";
+        var port = "eth0";
+        var note = "Production server";
+        var lastSeen = new DateTime(2026, 1, 15, 10, 30, 0);
+        var excludePing = false;
+        var ptrIgnore = true;
+        var ptr = 1;
+        var firewallObject = "FW_SERVER01";
+        var editDate = new DateTime(2026, 1, 10, 8, 0, 0);
+        var customerId = 100;
+        var extendedData = new Dictionary<string, object> { { "custom_field1", "value1" } };
+
+        // Act
+        var address = new Address(
+            id, subnetId, ip, isGateway, description, hostname, mac, owner,
+            tagId, deviceId, location, port, note, lastSeen, excludePing,
+            ptrIgnore, ptr, firewallObject, editDate, customerId, extendedData
+        );
+
+        // Assert
+        address.Id.Should().Be(id);
+        address.SubnetId.Should().Be(subnetId);
+        address.Ip.Should().Be(ip);
+        address.IsGateway.Should().Be(isGateway);
+        address.Description.Should().Be(description);
+        address.Hostname.Should().Be(hostname);
+        address.MAC.Should().Be(mac);
+        address.Owner.Should().Be(owner);
+        address.TagId.Should().Be(tagId);
+        address.DeviceId.Should().Be(deviceId);
+        address.Location.Should().Be(location);
+        address.Port.Should().Be(port);
+        address.Note.Should().Be(note);
+        address.LastSeen.Should().Be(lastSeen);
+        address.ExcludePing.Should().Be(excludePing);
+        address.PTRignore.Should().Be(ptrIgnore);
+        address.PTR.Should().Be(ptr);
+        address.FirewallAddressObject.Should().Be(firewallObject);
+        address.EditDate.Should().Be(editDate);
+        address.CustomerId.Should().Be(customerId);
+        address.ExtendedData.Should().BeEquivalentTo(extendedData);
+    }
+
+    [Fact]
+    public void Constructor_WithNullOptionalFields_SetsNullValues()
+    {
+        // Act
+        var address = new Address(
+            1, 10, "10.0.0.1", false, "", "", "", "",
+            0, 0, "", "", "", null, false,
+            false, 0, "", null, 0, null
+        );
+
+        // Assert
+        address.LastSeen.Should().BeNull();
+        address.EditDate.Should().BeNull();
+        address.ExtendedData.Should().BeNull();
+    }
+
+    [Fact]
+    public void ToString_ReturnsIpAddress()
+    {
+        // Arrange
+        var address = new Address(
+            1, 10, "192.168.1.50", false, "Test", "host.local", "", "",
+            0, 0, "", "", "", null, false,
+            false, 0, "", null, 0, null
+        );
+
+        // Act
+        var result = address.ToString();
+
+        // Assert
+        result.Should().Be("192.168.1.50");
+    }
+
+    [Theory]
+    [InlineData("10.0.0.1")]
+    [InlineData("172.16.0.100")]
+    [InlineData("192.168.255.255")]
+    [InlineData("2001:db8::1")]
+    public void ToString_ReturnsCorrectIp_ForVariousAddresses(string expectedIp)
+    {
+        // Arrange
+        var address = new Address(
+            1, 1, expectedIp, false, "", "", "", "",
+            0, 0, "", "", "", null, false,
+            false, 0, "", null, 0, null
+        );
+
+        // Act & Assert
+        address.ToString().Should().Be(expectedIp);
+    }
+}
--- a/classlib.tests/Models/DomainTests.cs
+++ b/classlib.tests/Models/DomainTests.cs
@@ -0,0 +1,43 @@
+namespace PS.IPAM.Tests.Models;
+
+using FluentAssertions;
+using PS.IPAM;
+using Xunit;
+
+public class DomainTests
+{
+    [Fact]
+    public void Constructor_SetsAllProperties()
+    {
+        // Arrange
+        var id = 1;
+        var name = "Default";
+        var description = "Default L2 domain";
+        var sections = "1;2;3";
+
+        // Act
+        var domain = new Domain(id, name, description, sections);
+
+        // Assert
+        domain.Id.Should().Be(id);
+        domain.Name.Should().Be(name);
+        domain.Description.Should().Be(description);
+        domain.Sections.Should().Be(sections);
+    }
+
+    [Theory]
+    [InlineData("Default")]
+    [InlineData("Datacenter1")]
+    [InlineData("Branch_Office")]
+    public void ToString_ReturnsDomainName(string domainName)
+    {
+        // Arrange
+        var domain = new Domain(1, domainName, "", "");
+
+        // Act
+        var result = domain.ToString();
+
+        // Assert
+        result.Should().Be(domainName);
+    }
+}
--- a/classlib.tests/Models/NameserverTests.cs
+++ b/classlib.tests/Models/NameserverTests.cs
@@ -0,0 +1,82 @@
+namespace PS.IPAM.Tests.Models;
+
+using FluentAssertions;
+using PS.IPAM;
+using Xunit;
+
+public class NameserverTests
+{
+    [Fact]
+    public void Constructor_SetsAllProperties()
+    {
+        // Arrange
+        var id = 1;
+        var name = "Google DNS";
+        var nameServers = "8.8.8.8;8.8.4.4";
+        var description = "Google Public DNS";
+        var permissions = "{\"3\":\"2\"}";
+        var editDate = new DateTime(2026, 1, 10);
+
+        // Act
+        var nameserver = new Nameserver(id, name, nameServers, description, permissions, editDate);
+
+        // Assert
+        nameserver.Id.Should().Be(id);
+        nameserver.Name.Should().Be(name);
+        nameserver.Description.Should().Be(description);
+        nameserver.Permissions.Should().Be(permissions);
+        nameserver.EditDate.Should().Be(editDate);
+    }
+
+    [Fact]
+    public void Constructor_ParsesNameservers_BySemicolon()
+    {
+        // Arrange
+        var nameServersString = "8.8.8.8;8.8.4.4;1.1.1.1";
+
+        // Act
+        var nameserver = new Nameserver(1, "Test", nameServersString, "", "", null);
+
+        // Assert
+        nameserver.NameServers.Should().HaveCount(3);
+        nameserver.NameServers.Should().ContainInOrder("8.8.8.8", "8.8.4.4", "1.1.1.1");
+    }
+
+    [Fact]
+    public void Constructor_WithSingleNameserver_ReturnsArrayWithOneElement()
+    {
+        // Arrange
+        var nameServersString = "8.8.8.8";
+
+        // Act
+        var nameserver = new Nameserver(1, "Test", nameServersString, "", "", null);
+
+        // Assert
+        nameserver.NameServers.Should().HaveCount(1);
+        nameserver.NameServers[0].Should().Be("8.8.8.8");
+    }
+
+    [Fact]
+    public void Constructor_WithEmptyNameservers_ReturnsArrayWithEmptyString()
+    {
+        // Arrange
+        var nameServersString = "";
+
+        // Act
+        var nameserver = new Nameserver(1, "Test", nameServersString, "", "", null);
+
+        // Assert
+        nameserver.NameServers.Should().HaveCount(1);
+        nameserver.NameServers[0].Should().BeEmpty();
+    }
+
+    [Fact]
+    public void Constructor_WithNullEditDate_SetsNull()
+    {
+        // Act
+        var nameserver = new Nameserver(1, "Test", "8.8.8.8", "", "", null);
+
+        // Assert
+        nameserver.EditDate.Should().BeNull();
+    }
+}
--- a/classlib.tests/Models/SectionTests.cs
+++ b/classlib.tests/Models/SectionTests.cs
@@ -0,0 +1,77 @@
+namespace PS.IPAM.Tests.Models;
+
+using FluentAssertions;
+using PS.IPAM;
+using Xunit;
+
+public class SectionTests
+{
+    [Fact]
+    public void Constructor_SetsAllProperties()
+    {
+        // Arrange
+        var id = 1;
+        var name = "Production";
+        var description = "Production networks section";
+        var masterSectionId = 0;
+        var permissions = "{\"3\":\"2\"}";
+        var strictMode = true;
+        var subnetOrdering = "subnet,asc";
+        var order = 1;
+        var editDate = new DateTime(2026, 1, 5);
+        var showSubnet = true;
+        var showVlan = true;
+        var showVRF = false;
+        var showSupernetOnly = false;
+        var dnsId = 1;
+
+        // Act
+        var section = new Section(
+            id, name, description, masterSectionId, permissions, strictMode,
+            subnetOrdering, order, editDate, showSubnet, showVlan, showVRF,
+            showSupernetOnly, dnsId
+        );
+
+        // Assert
+        section.Id.Should().Be(id);
+        section.Name.Should().Be(name);
+        section.Description.Should().Be(description);
+        section.MasterSectionId.Should().Be(masterSectionId);
+        section.Permissions.Should().Be(permissions);
+        section.StrictMode.Should().Be(strictMode);
+        section.SubnetOrdering.Should().Be(subnetOrdering);
+        section.Order.Should().Be(order);
+        section.EditDate.Should().Be(editDate);
+        section.ShowSubnet.Should().Be(showSubnet);
+        section.ShowVlan.Should().Be(showVlan);
+        section.ShowVRF.Should().Be(showVRF);
+        section.ShowSupernetOnly.Should().Be(showSupernetOnly);
+        section.DNSId.Should().Be(dnsId);
+    }
+
+    [Theory]
+    [InlineData("Production")]
+    [InlineData("Development")]
+    [InlineData("DMZ")]
+    public void ToString_ReturnsSectionName(string sectionName)
+    {
+        // Arrange
+        var section = new Section(1, sectionName, "", 0, "", false, "", 0, null, false, false, false, false, 0);
+
+        // Act
+        var result = section.ToString();
+
+        // Assert
+        result.Should().Be(sectionName);
+    }
+
+    [Fact]
+    public void Constructor_WithNullEditDate_SetsNull()
+    {
+        // Act
+        var section = new Section(1, "Test", "", 0, "", false, "", 0, null, false, false, false, false, 0);
+
+        // Assert
+        section.EditDate.Should().BeNull();
+    }
+}
--- a/classlib.tests/Models/SessionTests.cs
+++ b/classlib.tests/Models/SessionTests.cs
@@ -0,0 +1,92 @@
+namespace PS.IPAM.Tests.Models;
+
+using FluentAssertions;
+using PS.IPAM;
+using Xunit;
+
+public class SessionTests
+{
+    [Fact]
+    public void Constructor_WithCredentialsAuth_SetsAllProperties()
+    {
+        // Arrange
+        var authType = AuthType.credentials;
+        var token = "test-token-123";
+        var appId = "myApp";
+        var url = "https://ipam.example.com";
+        var expires = new DateTime(2026, 12, 31, 23, 59, 59);
+        var credentials = new object(); // Mock credentials
+
+        // Act
+        var session = new Session(authType, token, appId, url, expires, credentials);
+
+        // Assert
+        session.AuthType.Should().Be(AuthType.credentials);
+        session.Token.Should().Be(token);
+        session.AppID.Should().Be(appId);
+        session.URL.Should().Be(url);
+        session.Expires.Should().Be(expires);
+        session.Credentials.Should().BeSameAs(credentials);
+    }
+
+    [Fact]
+    public void Constructor_WithTokenAuth_SetsAllProperties()
+    {
+        // Arrange
+        var authType = AuthType.token;
+        var token = "static-api-token";
+        var appId = "apiApp";
+        var url = "https://ipam.test.com";
+
+        // Act
+        var session = new Session(authType, token, appId, url, null, null);
+
+        // Assert
+        session.AuthType.Should().Be(AuthType.token);
+        session.Token.Should().Be(token);
+        session.AppID.Should().Be(appId);
+        session.URL.Should().Be(url);
+        session.Expires.Should().BeNull();
+        session.Credentials.Should().BeNull();
+    }
+
+    [Fact]
+    public void Token_CanBeModified()
+    {
+        // Arrange
+        var session = new Session(AuthType.credentials, "old-token", "app", "https://test.com", null, null);
+
+        // Act
+        session.Token = "new-token";
+
+        // Assert
+        session.Token.Should().Be("new-token");
+    }
+
+    [Fact]
+    public void Expires_CanBeModified()
+    {
+        // Arrange
+        var session = new Session(AuthType.credentials, "token", "app", "https://test.com", null, null);
+        var newExpiry = new DateTime(2027, 1, 1);
+
+        // Act
+        session.Expires = newExpiry;
+
+        // Assert
+        session.Expires.Should().Be(newExpiry);
+    }
+
+    [Fact]
+    public void ToString_ReturnsDefaultObjectString()
+    {
+        // Arrange
+        var session = new Session(AuthType.token, "token", "app", "https://test.com", null, null);
+
+        // Act
+        var result = session.ToString();
+
+        // Assert
+        result.Should().Contain("PS.IPAM.Session");
+    }
+}
--- a/classlib.tests/Models/SubnetworkTests.cs
+++ b/classlib.tests/Models/SubnetworkTests.cs
@@ -0,0 +1,142 @@
+namespace PS.IPAM.Tests.Models;
+
+using FluentAssertions;
+using PS.IPAM;
+using Xunit;
+
+public class SubnetworkTests
+{
+    [Fact]
+    public void Constructor_SetsAllProperties()
+    {
+        // Arrange
+        var id = 1;
+        var subnet = "192.168.1.0";
+        var mask = 24;
+        var sectionId = 5;
+        var description = "Production network";
+        var linkedSubnet = "linked-123";
+        var firewallObject = "FW_PROD";
+        var vrfId = 2;
+        var masterSubnetId = 0;
+        var allowRequests = true;
+        var vlanId = 100;
+        var showName = true;
+        var deviceId = 10;
+        var permissions = "rw";
+        var pingSubnet = true;
+        var discoverSubnet = false;
+        var resolveDNS = true;
+        var dnsRecursive = false;
+        var dnsRecords = true;
+        var nameserverId = 3;
+        var scanAgent = false;
+        var isFolder = false;
+        var isFull = false;
+        var isPool = true;
+        var tagId = 1;
+        var threshold = 80;
+        var locationId = 4;
+        var editDate = new DateTime(2026, 1, 10);
+        var lastScan = new DateTime(2026, 1, 9);
+        var lastDiscovery = new DateTime(2026, 1, 8);
+        var calculation = new { maxhosts = 254 };
+        var customFields = new Dictionary<string, object> { { "custom_env", "prod" } };
+
+        // Act
+        var subnetwork = new Subnetwork(
+            id, subnet, mask, sectionId, description, linkedSubnet, firewallObject,
+            vrfId, masterSubnetId, allowRequests, vlanId, showName, deviceId,
+            permissions, pingSubnet, discoverSubnet, resolveDNS, dnsRecursive,
+            dnsRecords, nameserverId, scanAgent, isFolder, isFull, isPool,
+            tagId, threshold, locationId, editDate, lastScan, lastDiscovery,
+            calculation, customFields
+        );
+
+        // Assert
+        subnetwork.Id.Should().Be(id);
+        subnetwork.Subnet.Should().Be(subnet);
+        subnetwork.Mask.Should().Be(mask);
+        subnetwork.SectionId.Should().Be(sectionId);
+        subnetwork.Description.Should().Be(description);
+        subnetwork.LinkedSubnet.Should().Be(linkedSubnet);
+        subnetwork.FirewallAddressObject.Should().Be(firewallObject);
+        subnetwork.VrfId.Should().Be(vrfId);
+        subnetwork.MasterSubnetId.Should().Be(masterSubnetId);
+        subnetwork.AllowRequests.Should().Be(allowRequests);
+        subnetwork.VlanId.Should().Be(vlanId);
+        subnetwork.ShowName.Should().Be(showName);
+        subnetwork.DeviceId.Should().Be(deviceId);
+        subnetwork.Permissions.Should().Be(permissions);
+        subnetwork.PingSubnet.Should().Be(pingSubnet);
+        subnetwork.DiscoverSubnet.Should().Be(discoverSubnet);
+        subnetwork.ResolveDNS.Should().Be(resolveDNS);
+        subnetwork.DNSRecursive.Should().Be(dnsRecursive);
+        subnetwork.DNSRecords.Should().Be(dnsRecords);
+        subnetwork.NameserverId.Should().Be(nameserverId);
+        subnetwork.ScanAgent.Should().Be(scanAgent);
+        subnetwork.IsFolder.Should().Be(isFolder);
+        subnetwork.IsFull.Should().Be(isFull);
+        subnetwork.IsPool.Should().Be(isPool);
+        subnetwork.TagId.Should().Be(tagId);
+        subnetwork.Threshold.Should().Be(threshold);
+        subnetwork.LocationId.Should().Be(locationId);
+        subnetwork.EditDate.Should().Be(editDate);
+        subnetwork.LastScan.Should().Be(lastScan);
+        subnetwork.LastDiscovery.Should().Be(lastDiscovery);
+        subnetwork.Calculation.Should().BeEquivalentTo(calculation);
+        subnetwork.ExtendedData.Should().BeEquivalentTo(customFields);
+    }
+
+    [Theory]
+    [InlineData("192.168.1.0", 24, "192.168.1.0/24")]
+    [InlineData("10.0.0.0", 8, "10.0.0.0/8")]
+    [InlineData("172.16.0.0", 16, "172.16.0.0/16")]
+    [InlineData("192.168.100.0", 30, "192.168.100.0/30")]
+    public void GetCIDR_ReturnsCidrNotation(string subnet, int mask, string expectedCidr)
+    {
+        // Arrange
+        var subnetwork = CreateSubnetwork(subnet, mask);
+
+        // Act
+        var result = subnetwork.GetCIDR();
+
+        // Assert
+        result.Should().Be(expectedCidr);
+    }
+
+    [Fact]
+    public void ToString_ReturnsCidrNotation()
+    {
+        // Arrange
+        var subnetwork = CreateSubnetwork("10.10.0.0", 16);
+
+        // Act
+        var result = subnetwork.ToString();
+
+        // Assert
+        result.Should().Be("10.10.0.0/16");
+    }
+
+    [Fact]
+    public void ToString_EqualsGetCIDR()
+    {
+        // Arrange
+        var subnetwork = CreateSubnetwork("172.20.0.0", 12);
+
+        // Act & Assert
+        subnetwork.ToString().Should().Be(subnetwork.GetCIDR());
+    }
+
+    private static Subnetwork CreateSubnetwork(string subnet, int mask)
+    {
+        return new Subnetwork(
+            1, subnet, mask, 1, "", "", "",
+            0, 0, false, 0, false, 0,
+            "", false, false, false, false,
+            false, 0, false, false, false, false,
+            0, 0, 0, null, null, null,
+            new object(), null
+        );
+    }
+}
--- a/classlib.tests/Models/TagTests.cs
+++ b/classlib.tests/Models/TagTests.cs
@@ -0,0 +1,77 @@
+namespace PS.IPAM.Tests.Models;
+
+using FluentAssertions;
+using PS.IPAM;
+using Xunit;
+
+public class TagTests
+{
+    [Fact]
+    public void Constructor_SetsAllProperties()
+    {
+        // Arrange
+        var id = 1;
+        var type = "Used";
+        var showTag = true;
+        var bgColor = "#5cb85c";
+        var fgColor = "#ffffff";
+        var compress = "Yes";
+        var locked = "No";
+        var updateTag = true;
+
+        // Act
+        var tag = new Tag(id, type, showTag, bgColor, fgColor, compress, locked, updateTag);
+
+        // Assert
+        tag.Id.Should().Be(id);
+        tag.Type.Should().Be(type);
+        tag.ShowTag.Should().Be(showTag);
+        tag.BGColor.Should().Be(bgColor);
+        tag.FGColor.Should().Be(fgColor);
+        tag.Compress.Should().BeTrue();
+        tag.Locked.Should().BeFalse();
+        tag.UpdateTag.Should().Be(updateTag);
+    }
+
+    [Theory]
+    [InlineData("Yes", true)]
+    [InlineData("No", false)]
+    [InlineData("", false)]
+    [InlineData("yes", false)]  // Case sensitive
+    [InlineData("true", false)] // Only "Yes" is true
+    public void StringToBool_ConvertsCorrectly(string input, bool expected)
+    {
+        // The StringToBool is private, so we test through the constructor
+        // Using Compress field which uses StringToBool
+        var tag = new Tag(1, "Test", false, "", "", input, "No", false);
+
+        tag.Compress.Should().Be(expected);
+    }
+
+    [Theory]
+    [InlineData("Used")]
+    [InlineData("Available")]
+    [InlineData("Reserved")]
+    [InlineData("DHCP")]
+    public void ToString_ReturnsTagType(string tagType)
+    {
+        // Arrange
+        var tag = new Tag(1, tagType, false, "", "", "No", "No", false);
+
+        // Act
+        var result = tag.ToString();
+
+        // Assert
+        result.Should().Be(tagType);
+    }
+
+    [Fact]
+    public void Locked_WithYes_IsTrue()
+    {
+        // Arrange & Act
+        var tag = new Tag(1, "Test", false, "", "", "No", "Yes", false);
+
+        // Assert
+        tag.Locked.Should().BeTrue();
+    }
+}
--- a/classlib.tests/Models/VlanTests.cs
+++ b/classlib.tests/Models/VlanTests.cs
@@ -0,0 +1,76 @@
+namespace PS.IPAM.Tests.Models;
+
+using FluentAssertions;
+using PS.IPAM;
+using Xunit;
+
+public class VlanTests
+{
+    [Fact]
+    public void Constructor_SetsAllProperties()
+    {
+        // Arrange
+        var vlanId = 100;
+        var domainId = 1;
+        var name = "Production VLAN";
+        var number = 100;
+        var description = "Production network VLAN";
+        var editDate = new DateTime(2026, 1, 15);
+        var customerId = 50;
+        var customFields = new Dictionary<string, object> { { "custom_location", "DC1" } };
+
+        // Act
+        var vlan = new Vlan(vlanId, domainId, name, number, description, editDate, customerId, customFields);
+
+        // Assert
+        vlan.Id.Should().Be(vlanId);
+        vlan.VlanId.Should().Be(vlanId);
+        vlan.DomainId.Should().Be(domainId);
+        vlan.Name.Should().Be(name);
+        vlan.Number.Should().Be(number);
+        vlan.Description.Should().Be(description);
+        vlan.EditDate.Should().Be(editDate);
+        vlan.CustomerId.Should().Be(customerId);
+        vlan.ExtendedData.Should().BeEquivalentTo(customFields);
+    }
+
+    [Fact]
+    public void Id_And_VlanId_AreSameValue()
+    {
+        // Arrange
+        var vlanId = 200;
+
+        // Act
+        var vlan = new Vlan(vlanId, 1, "Test", 200, "", null, 0, null);
+
+        // Assert
+        vlan.Id.Should().Be(vlan.VlanId);
+    }
+
+    [Theory]
+    [InlineData(1)]
+    [InlineData(100)]
+    [InlineData(4094)]
+    public void ToString_ReturnsVlanNumber(int vlanNumber)
+    {
+        // Arrange
+        var vlan = new Vlan(1, 1, "Test", vlanNumber, "", null, 0, null);
+
+        // Act
+        var result = vlan.ToString();
+
+        // Assert
+        result.Should().Be(vlanNumber.ToString());
+    }
+
+    [Fact]
+    public void Constructor_WithNullOptionalFields_SetsNullValues()
+    {
+        // Act
+        var vlan = new Vlan(1, 1, "Test", 10, "", null, 0, null);
+
+        // Assert
+        vlan.EditDate.Should().BeNull();
+        vlan.ExtendedData.Should().BeNull();
+    }
+}
--- a/classlib.tests/Models/VrfTests.cs
+++ b/classlib.tests/Models/VrfTests.cs
@@ -0,0 +1,60 @@
+namespace PS.IPAM.Tests.Models;
+
+using FluentAssertions;
+using PS.IPAM;
+using Xunit;
+
+public class VrfTests
+{
+    [Fact]
+    public void Constructor_SetsAllProperties()
+    {
+        // Arrange
+        var id = 1;
+        var name = "VRF_PROD";
+        var rd = "65000:100";
+        var description = "Production VRF";
+        var sections = "1;2;3";
+        var editDate = new DateTime(2026, 1, 10);
+        var customFields = new Dictionary<string, object> { { "custom_tenant", "CustomerA" } };
+
+        // Act
+        var vrf = new Vrf(id, name, rd, description, sections, editDate, customFields);
+
+        // Assert
+        vrf.Id.Should().Be(id);
+        vrf.Name.Should().Be(name);
+        vrf.RouteDistinguisher.Should().Be(rd);
+        vrf.Description.Should().Be(description);
+        vrf.Sections.Should().Be(sections);
+        vrf.EditDate.Should().Be(editDate);
+        vrf.ExtendedData.Should().BeEquivalentTo(customFields);
+    }
+
+    [Theory]
+    [InlineData("VRF_DEFAULT")]
+    [InlineData("Production_VRF")]
+    [InlineData("CUSTOMER_A")]
+    public void ToString_ReturnsVrfName(string vrfName)
+    {
+        // Arrange
+        var vrf = new Vrf(1, vrfName, "65000:1", "", "", null, null);
+
+        // Act
+        var result = vrf.ToString();
+
+        // Assert
+        result.Should().Be(vrfName);
+    }
+
+    [Fact]
+    public void Constructor_WithNullOptionalFields_SetsNullValues()
+    {
+        // Act
+        var vrf = new Vrf(1, "Test", "65000:1", "", "", null, null);
+
+        // Assert
+        vrf.EditDate.Should().BeNull();
+        vrf.ExtendedData.Should().BeNull();
+    }
+}
--- a/classlib.tests/TestCollections.cs
+++ b/classlib.tests/TestCollections.cs
@@ -0,0 +1,32 @@
+namespace PS.IPAM.Tests;
+
+using Xunit;
+
+/// <summary>
+/// Collection definition for tests that share static state (SessionManager, RequestHelper.TestHttpHandler).
+/// Tests in this collection will run sequentially, not in parallel.
+/// </summary>
+[CollectionDefinition("Sequential")]
+public class SequentialCollection : ICollectionFixture<SequentialTestFixture>
+{
+}
+
+/// <summary>
+/// Fixture for sequential test collection.
+/// </summary>
+public class SequentialTestFixture : IDisposable
+{
+    public SequentialTestFixture()
+    {
+        // Clean up before tests
+        PS.IPAM.Helpers.SessionManager.CloseSession();
+        PS.IPAM.Helpers.RequestHelper.TestHttpHandler = null;
+    }
+
+    public void Dispose()
+    {
+        // Clean up after tests
+        PS.IPAM.Helpers.SessionManager.CloseSession();
+        PS.IPAM.Helpers.RequestHelper.TestHttpHandler = null;
+    }
+}
--- a/classlib.tests/classlib.tests.csproj
+++ b/classlib.tests/classlib.tests.csproj
@@ -0,0 +1,33 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <LangVersion>latest</LangVersion>
+    <IsPackable>false</IsPackable>
+    <IsTestProject>true</IsTestProject>
+    <RootNamespace>PS.IPAM.Tests</RootNamespace>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
+    <PackageReference Include="xunit" Version="2.6.4" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.5.5">
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+      <PrivateAssets>all</PrivateAssets>
+    </PackageReference>
+    <PackageReference Include="coverlet.collector" Version="6.0.0">
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+      <PrivateAssets>all</PrivateAssets>
+    </PackageReference>
+    <PackageReference Include="Moq" Version="4.20.70" />
+    <PackageReference Include="FluentAssertions" Version="6.12.0" />
+    <PackageReference Include="PowerShellStandard.Library" Version="5.1.1" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\classlib\classlib.csproj" />
+  </ItemGroup>
+
+</Project>
--- a/classlib/Cmdlets/AssignTagCmdlet.cs
+++ b/classlib/Cmdlets/AssignTagCmdlet.cs
@@ -0,0 +1,43 @@
+namespace PS.IPAM.Cmdlets;
+using System;
+using System.Collections.Generic;
+using System.Management.Automation;
+using PS.IPAM;
+using PS.IPAM.Helpers;
+
+[Cmdlet("Assign", "Tag")]
+public class AssignTagCmdlet : PSCmdlet
+{
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0)]
+    [ValidateNotNullOrEmpty]
+    public Address? AddressObject { get; set; }
+
+    [Parameter(
+        Mandatory = true,
+        Position = 1)]
+    [ValidateNotNullOrEmpty]
+    public Tag? Tag { get; set; }
+
+    protected override void ProcessRecord()
+    {
+        try
+        {
+            var identifiers = new List<string> { AddressObject!.Id.ToString() };
+            var body = new Dictionary<string, object>
+            {
+                { "tag", Tag!.Id }
+            };
+
+            RequestHelper.InvokeRequest("PATCH", controllers.addresses, null, null, body, identifiers.ToArray())
+                .GetAwaiter().GetResult();
+        }
+        catch (Exception ex)
+        {
+            WriteError(new ErrorRecord(ex, "AssignTagError", ErrorCategory.InvalidOperation, null));
+        }
+    }
+}
--- a/classlib/Cmdlets/CloseSessionCmdlet.cs
+++ b/classlib/Cmdlets/CloseSessionCmdlet.cs
@@ -0,0 +1,21 @@
+namespace PS.IPAM.Cmdlets;
+using System.Management.Automation;
+using PS.IPAM.Helpers;
+
+[Cmdlet(VerbsCommon.Close, "Session")]
+public class CloseSessionCmdlet : PSCmdlet
+{
+    protected override void ProcessRecord()
+    {
+        try
+        {
+            RequestHelper.InvokeRequest("DELETE", controllers.user, null, null, null, null)
+                .GetAwaiter().GetResult();
+            SessionManager.CloseSession();
+        }
+        catch (System.Exception ex)
+        {
+            WriteError(new ErrorRecord(ex, "CloseSessionError", ErrorCategory.InvalidOperation, null));
+        }
+    }
+}
--- a/classlib/Cmdlets/GetAddressCmdlet.cs
+++ b/classlib/Cmdlets/GetAddressCmdlet.cs
@@ -0,0 +1,162 @@
+namespace PS.IPAM.Cmdlets;
+using System;
+using System.Collections.Generic;
+using System.Management.Automation;
+using System.Net;
+using PS.IPAM;
+using PS.IPAM.Helpers;
+
+[Cmdlet(VerbsCommon.Get, "Address", DefaultParameterSetName = "ByID")]
+[OutputType(typeof(Address))]
+public class GetAddressCmdlet : PSCmdlet
+{
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0,
+        ParameterSetName = "ByID")]
+    [ValidateNotNullOrEmpty]
+    public int Id { get; set; }
+
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0,
+        ParameterSetName = "ByIP")]
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 1,
+        ParameterSetName = "BySubnetId")]
+    [ValidateNotNullOrEmpty]
+    public IPAddress? IP { get; set; }
+
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0,
+        ParameterSetName = "ByHostName")]
+    [ValidateNotNullOrEmpty]
+    public string? HostName { get; set; }
+
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0,
+        ParameterSetName = "ByHostBase")]
+    [ValidateNotNullOrEmpty]
+    public string? HostBase { get; set; }
+
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0,
+        ParameterSetName = "ByTag")]
+    [ValidateNotNullOrEmpty]
+    public int? TagId { get; set; }
+
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0,
+        ParameterSetName = "BySubnetId")]
+    [ValidateNotNullOrEmpty]
+    public int? SubnetId { get; set; }
+
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0,
+        ParameterSetName = "BySubnetCIDR")]
+    [ValidatePattern(@"^\d+\.\d+\.\d+\.\d+/\d{1,2}$")]
+    [ValidateNotNullOrEmpty]
+    public string? SubnetCIDR { get; set; }
+
+    protected override void ProcessRecord()
+    {
+        try
+        {
+            var controller = controllers.addresses;
+            var identifiers = new List<string>();
+
+            switch (ParameterSetName)
+            {
+                case "ByID":
+                    identifiers.Add(Id.ToString());
+                    break;
+                case "ByIP":
+                    identifiers.Add("search");
+                    identifiers.Add(IP!.ToString());
+                    break;
+                case "ByHostName":
+                    identifiers.Add("search_hostname");
+                    identifiers.Add(HostName!);
+                    break;
+                case "ByHostBase":
+                    identifiers.Add("search_hostbase");
+                    identifiers.Add(HostBase!);
+                    break;
+                case "ByTag":
+                    identifiers.Add("tags");
+                    identifiers.Add(TagId!.Value.ToString());
+                    identifiers.Add("addresses");
+                    break;
+                case "BySubnetId":
+                    if (IP != null)
+                    {
+                        identifiers.Add(IP.ToString());
+                        identifiers.Add(SubnetId!.Value.ToString());
+                    }
+                    else
+                    {
+                        controller = controllers.subnets;
+                        identifiers.Add(SubnetId!.Value.ToString());
+                        identifiers.Add("addresses");
+                    }
+                    break;
+                case "BySubnetCIDR":
+                    controller = controllers.subnets;
+                    var subnet = RequestHelper.InvokeRequest("GET", controllers.subnets, types.Subnetwork, null, null, new[] { "cidr", SubnetCIDR! })
+                        .GetAwaiter().GetResult();
+                    if (subnet == null)
+                    {
+                        throw new Exception("Cannot find subnet!");
+                    }
+                    var subnetObj = subnet as Subnetwork;
+                    identifiers.Add(subnetObj!.Id.ToString());
+                    identifiers.Add("addresses");
+                    break;
+            }
+
+            var result = RequestHelper.InvokeRequest("GET", controller, types.Address, null, null, identifiers.ToArray())
+                .GetAwaiter().GetResult();
+
+            if (result != null)
+            {
+                if (result is System.Collections.IEnumerable enumerable && !(result is string))
+                {
+                    foreach (var item in enumerable)
+                    {
+                        WriteObject(item);
+                    }
+                }
+                else
+                {
+                    WriteObject(result);
+                }
+            }
+        }
+        catch (Exception ex)
+        {
+            WriteError(new ErrorRecord(ex, "GetAddressError", ErrorCategory.InvalidOperation, null));
+        }
+    }
+}
--- a/classlib/Cmdlets/GetFirstFreeIPCmdlet.cs
+++ b/classlib/Cmdlets/GetFirstFreeIPCmdlet.cs
@@ -0,0 +1,79 @@
+namespace PS.IPAM.Cmdlets;
+using System;
+using System.Collections.Generic;
+using System.Management.Automation;
+using System.Net;
+using PS.IPAM;
+using PS.IPAM.Helpers;
+
+[Cmdlet(VerbsCommon.Get, "FirstFreeIP", DefaultParameterSetName = "ByID")]
+public class GetFirstFreeIPCmdlet : PSCmdlet
+{
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0,
+        ParameterSetName = "ByCIDR")]
+    [ValidatePattern(@"^\d+\.\d+\.\d+\.\d+/\d{1,2}$")]
+    [ValidateNotNullOrEmpty]
+    public string? CIDR { get; set; }
+
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0,
+        ParameterSetName = "ByID")]
+    [ValidateNotNullOrEmpty]
+    public int? Id { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0,
+        ParameterSetName = "BySubnetObject")]
+    [ValidateNotNullOrEmpty]
+    public Subnetwork? SubnetObject { get; set; }
+
+    protected override void ProcessRecord()
+    {
+        try
+        {
+            int subnetId;
+            if (ParameterSetName == "ByCIDR")
+            {
+                var subnet = RequestHelper.InvokeRequest("GET", controllers.subnets, types.Subnetwork, null, null, new[] { "cidr", CIDR! })
+                    .GetAwaiter().GetResult();
+                if (subnet == null)
+                {
+                    throw new Exception("Cannot find subnet!");
+                }
+                var subnetObj = subnet as Subnetwork;
+                subnetId = subnetObj!.Id;
+            }
+            else if (ParameterSetName == "BySubnetObject")
+            {
+                subnetId = SubnetObject!.Id;
+            }
+            else
+            {
+                subnetId = Id!.Value;
+            }
+
+            var identifiers = new List<string> { subnetId.ToString(), "first_free" };
+            var result = RequestHelper.InvokeRequest("GET", controllers.subnets, null, null, null, identifiers.ToArray())
+                .GetAwaiter().GetResult();
+
+            if (result != null)
+            {
+                WriteObject(new { Ip = result.ToString() });
+            }
+        }
+        catch (Exception ex)
+        {
+            WriteError(new ErrorRecord(ex, "GetFirstFreeIPError", ErrorCategory.InvalidOperation, null));
+        }
+    }
+}
--- a/classlib/Cmdlets/GetL2DomainCmdlet.cs
+++ b/classlib/Cmdlets/GetL2DomainCmdlet.cs
@@ -0,0 +1,54 @@
+namespace PS.IPAM.Cmdlets;
+using System;
+using System.Collections.Generic;
+using System.Management.Automation;
+using PS.IPAM;
+using PS.IPAM.Helpers;
+
+[Cmdlet(VerbsCommon.Get, "L2Domain", DefaultParameterSetName = "ByID")]
+[OutputType(typeof(Domain))]
+public class GetL2DomainCmdlet : PSCmdlet
+{
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0,
+        ParameterSetName = "ByID")]
+    [ValidateNotNullOrEmpty]
+    public int? Id { get; set; }
+
+    protected override void ProcessRecord()
+    {
+        try
+        {
+            var identifiers = new List<string>();
+            if (Id.HasValue)
+            {
+                identifiers.Add(Id.Value.ToString());
+            }
+
+            var result = RequestHelper.InvokeRequest("GET", controllers.l2domains, types.Domain, null, null, identifiers.Count > 0 ? identifiers.ToArray() : null)
+                .GetAwaiter().GetResult();
+
+            if (result != null)
+            {
+                if (result is System.Collections.IEnumerable enumerable && !(result is string))
+                {
+                    foreach (var item in enumerable)
+                    {
+                        WriteObject(item);
+                    }
+                }
+                else
+                {
+                    WriteObject(result);
+                }
+            }
+        }
+        catch (Exception ex)
+        {
+            WriteError(new ErrorRecord(ex, "GetL2DomainError", ErrorCategory.InvalidOperation, null));
+        }
+    }
+}
--- a/classlib/Cmdlets/GetNameserverCmdlet.cs
+++ b/classlib/Cmdlets/GetNameserverCmdlet.cs
@@ -0,0 +1,54 @@
+namespace PS.IPAM.Cmdlets;
+using System;
+using System.Collections.Generic;
+using System.Management.Automation;
+using PS.IPAM;
+using PS.IPAM.Helpers;
+
+[Cmdlet(VerbsCommon.Get, "Nameserver", DefaultParameterSetName = "NoParams")]
+[OutputType(typeof(Nameserver))]
+public class GetNameserverCmdlet : PSCmdlet
+{
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0,
+        ParameterSetName = "ByID")]
+    [ValidateNotNullOrEmpty]
+    public int? Id { get; set; }
+
+    protected override void ProcessRecord()
+    {
+        try
+        {
+            var identifiers = new List<string>();
+            if (Id.HasValue)
+            {
+                identifiers.Add(Id.Value.ToString());
+            }
+
+            var result = RequestHelper.InvokeRequest("GET", controllers.tools, types.Nameserver, subcontrollers.nameservers, null, identifiers.Count > 0 ? identifiers.ToArray() : null)
+                .GetAwaiter().GetResult();
+
+            if (result != null)
+            {
+                if (result is System.Collections.IEnumerable enumerable && !(result is string))
+                {
+                    foreach (var item in enumerable)
+                    {
+                        WriteObject(item);
+                    }
+                }
+                else
+                {
+                    WriteObject(result);
+                }
+            }
+        }
+        catch (Exception ex)
+        {
+            WriteError(new ErrorRecord(ex, "GetNameserverError", ErrorCategory.InvalidOperation, null));
+        }
+    }
+}
--- a/classlib/Cmdlets/GetPermissionsCmdlet.cs
+++ b/classlib/Cmdlets/GetPermissionsCmdlet.cs
@@ -0,0 +1,148 @@
+namespace PS.IPAM.Cmdlets;
+using System;
+using System.Collections.Generic;
+using System.Management.Automation;
+using System.Net;
+using PS.IPAM;
+using PS.IPAM.Helpers;
+
+[Cmdlet(VerbsCommon.Get, "Permissions")]
+public class GetPermissionsCmdlet : PSCmdlet
+{
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0,
+        ParameterSetName = "ByID")]
+    [ValidateNotNullOrEmpty]
+    public string? Id { get; set; }
+
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0,
+        ParameterSetName = "ByIP")]
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 1,
+        ParameterSetName = "BySubnetId")]
+    [ValidateNotNullOrEmpty]
+    public IPAddress? IP { get; set; }
+
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0,
+        ParameterSetName = "ByHostName")]
+    [ValidateNotNullOrEmpty]
+    public string? HostName { get; set; }
+
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0,
+        ParameterSetName = "ByTag")]
+    [ValidateNotNullOrEmpty]
+    public string? TagId { get; set; }
+
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0,
+        ParameterSetName = "BySubnetId")]
+    [ValidateNotNullOrEmpty]
+    public string? SubnetId { get; set; }
+
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0,
+        ParameterSetName = "BySubnetCIDR")]
+    [ValidatePattern(@"^\d+\.\d+\.\d+\.\d+/\d{1,2}$")]
+    [ValidateNotNullOrEmpty]
+    public string? SubnetCIDR { get; set; }
+
+    protected override void ProcessRecord()
+    {
+        try
+        {
+            var controller = controllers.addresses;
+            var identifiers = new List<string>();
+
+            switch (ParameterSetName)
+            {
+                case "ByID":
+                    identifiers.Add(Id!);
+                    break;
+                case "ByIP":
+                    identifiers.Add("search");
+                    identifiers.Add(IP!.ToString());
+                    break;
+                case "ByHostName":
+                    identifiers.Add("search_hostname");
+                    identifiers.Add(HostName!);
+                    break;
+                case "ByTag":
+                    identifiers.Add("tags");
+                    identifiers.Add(TagId!);
+                    identifiers.Add("addresses");
+                    break;
+                case "BySubnetId":
+                    if (IP != null)
+                    {
+                        identifiers.Add(IP.ToString());
+                        identifiers.Add(SubnetId!);
+                    }
+                    else
+                    {
+                        controller = controllers.subnets;
+                        identifiers.Add(SubnetId!);
+                        identifiers.Add("addresses");
+                    }
+                    break;
+                case "BySubnetCIDR":
+                    controller = controllers.subnets;
+                    var subnet = RequestHelper.InvokeRequest("GET", controllers.subnets, types.Subnetwork, null, null, new[] { "cidr", SubnetCIDR! })
+                        .GetAwaiter().GetResult();
+                    if (subnet == null)
+                    {
+                        throw new Exception("Cannot find subnet!");
+                    }
+                    var subnetObj = subnet as Subnetwork;
+                    identifiers.Add(subnetObj!.Id.ToString());
+                    identifiers.Add("addresses");
+                    break;
+            }
+
+            var result = RequestHelper.InvokeRequest("GET", controller, null, null, null, identifiers.ToArray())
+                .GetAwaiter().GetResult();
+
+            if (result != null)
+            {
+                if (result is System.Collections.IEnumerable enumerable && !(result is string))
+                {
+                    foreach (var item in enumerable)
+                    {
+                        WriteObject(item);
+                    }
+                }
+                else
+                {
+                    WriteObject(result);
+                }
+            }
+        }
+        catch (Exception ex)
+        {
+            WriteError(new ErrorRecord(ex, "GetPermissionsError", ErrorCategory.InvalidOperation, null));
+        }
+    }
+}
--- a/classlib/Cmdlets/GetSectionCmdlet.cs
+++ b/classlib/Cmdlets/GetSectionCmdlet.cs
@@ -0,0 +1,65 @@
+namespace PS.IPAM.Cmdlets;
+using System;
+using System.Collections.Generic;
+using System.Management.Automation;
+using PS.IPAM;
+using PS.IPAM.Helpers;
+
+[Cmdlet(VerbsCommon.Get, "Section", DefaultParameterSetName = "NoParams")]
+[OutputType(typeof(Section))]
+public class GetSectionCmdlet : PSCmdlet
+{
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        Position = 0,
+        ParameterSetName = "ByID")]
+    [ValidateNotNullOrEmpty]
+    public int? Id { get; set; }
+
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        Position = 0,
+        ParameterSetName = "ByName")]
+    [ValidateNotNullOrEmpty]
+    public string? Name { get; set; }
+
+    protected override void ProcessRecord()
+    {
+        try
+        {
+            var identifiers = new List<string>();
+            if (ParameterSetName == "ByID" && Id.HasValue)
+            {
+                identifiers.Add(Id.Value.ToString());
+            }
+            else if (ParameterSetName == "ByName")
+            {
+                identifiers.Add(Name!);
+            }
+
+            var result = RequestHelper.InvokeRequest("GET", controllers.sections, types.Section, null, null, identifiers.Count > 0 ? identifiers.ToArray() : null)
+                .GetAwaiter().GetResult();
+
+            if (result != null)
+            {
+                if (result is System.Collections.IEnumerable enumerable && !(result is string))
+                {
+                    foreach (var item in enumerable)
+                    {
+                        WriteObject(item);
+                    }
+                }
+                else
+                {
+                    WriteObject(result);
+                }
+            }
+        }
+        catch (Exception ex)
+        {
+            WriteError(new ErrorRecord(ex, "GetSectionError", ErrorCategory.InvalidOperation, null));
+        }
+    }
+}
--- a/classlib/Cmdlets/GetSubnetCmdlet.cs
+++ b/classlib/Cmdlets/GetSubnetCmdlet.cs
@@ -0,0 +1,261 @@
+namespace PS.IPAM.Cmdlets;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Management.Automation;
+using System.Net;
+using PS.IPAM;
+using PS.IPAM.Helpers;
+
+[Cmdlet(VerbsCommon.Get, "Subnet", DefaultParameterSetName = "NoParams")]
+[OutputType(typeof(Subnetwork))]
+public class GetSubnetCmdlet : PSCmdlet
+{
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0,
+        ParameterSetName = "ByCIDR")]
+    [ValidatePattern(@"^\d+\.\d+\.\d+\.\d+/\d{1,2}$")]
+    [ValidateNotNullOrEmpty]
+    public string? CIDR { get; set; }
+
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0,
+        ParameterSetName = "ByID")]
+    [ValidateNotNullOrEmpty]
+    public int? Id { get; set; }
+
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0,
+        ParameterSetName = "BySectionId")]
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 2,
+        ParameterSetName = "ByVlanNumber")]
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 1,
+        ParameterSetName = "ByVlanId")]
+    [ValidateNotNullOrEmpty]
+    public int? SectionId { get; set; }
+
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0,
+        ParameterSetName = "BySectionName")]
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 3,
+        ParameterSetName = "ByVlanNumber")]
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 2,
+        ParameterSetName = "ByVlanId")]
+    [ValidateNotNullOrEmpty]
+    public string? SectionName { get; set; }
+
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0,
+        ParameterSetName = "ByVrfId")]
+    [ValidateNotNullOrEmpty]
+    public int? VrfId { get; set; }
+
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0,
+        ParameterSetName = "ByVlanId")]
+    [ValidateNotNullOrEmpty]
+    public int? VlanId { get; set; }
+
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0,
+        ParameterSetName = "ByVlanNumber")]
+    [ValidateNotNullOrEmpty]
+    public int? VlanNumber { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 1,
+        ParameterSetName = "ByID")]
+    public SwitchParameter Slaves { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 2,
+        ParameterSetName = "ByID")]
+    public SwitchParameter Recurse { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 1,
+        ParameterSetName = "ByVlanNumber")]
+    [ValidateNotNullOrEmpty]
+    public int? VlanDomainId { get; set; }
+
+
+    protected override void ProcessRecord()
+    {
+        try
+        {
+            var controller = controllers.subnets;
+            var identifiers = new List<string>();
+
+            switch (ParameterSetName)
+            {
+                case "ByCIDR":
+                    identifiers.Add("cidr");
+                    identifiers.Add(CIDR!);
+                    break;
+                case "ByID":
+                    identifiers.Add(Id!.Value.ToString());
+                    if (Slaves.IsPresent)
+                    {
+                        identifiers.Add(Recurse.IsPresent ? "slaves_recursive" : "slaves");
+                    }
+                    break;
+                case "BySectionId":
+                    controller = controllers.sections;
+                    identifiers.Add(SectionId!.Value.ToString());
+                    identifiers.Add("subnets");
+                    break;
+                case "BySectionName":
+                    controller = controllers.sections;
+                    var section = RequestHelper.InvokeRequest("GET", controllers.sections, types.Section, null, null, new[] { SectionName! })
+                        .GetAwaiter().GetResult();
+                    if (section == null)
+                    {
+                        throw new Exception("Cannot find section!");
+                    }
+                    var sectionObj = section as Section;
+                    identifiers.Add(sectionObj!.Id.ToString());
+                    identifiers.Add("subnets");
+                    break;
+                case "ByVrfId":
+                    controller = controllers.vrf;
+                    identifiers.Add(VrfId!.Value.ToString());
+                    identifiers.Add("subnets");
+                    break;
+                case "ByVlanId":
+                    controller = controllers.vlan;
+                    identifiers.Add(VlanId!.Value.ToString());
+                    identifiers.Add("subnets");
+                    if (SectionId.HasValue)
+                    {
+                        identifiers.Add(SectionId.Value.ToString());
+                    }
+                    else if (!string.IsNullOrEmpty(SectionName))
+                    {
+                        var section2 = RequestHelper.InvokeRequest("GET", controllers.sections, types.Section, null, null, new[] { SectionName })
+                            .GetAwaiter().GetResult();
+                        if (section2 != null)
+                        {
+                            var sectionObj2 = section2 as Section;
+                            identifiers.Add(sectionObj2!.Id.ToString());
+                        }
+                    }
+                    break;
+                case "ByVlanNumber":
+                    controller = controllers.vlan;
+                    var vlans = RequestHelper.InvokeRequest("GET", controllers.vlan, types.Vlan, null, null, new[] { "search", VlanNumber!.Value.ToString() })
+                        .GetAwaiter().GetResult();
+                    if (vlans == null)
+                    {
+                        throw new Exception("Cannot find Vlan!");
+                    }
+                    var vlanList = vlans as System.Collections.IEnumerable;
+                    Vlan? foundVlan = null;
+                    if (vlanList != null)
+                    {
+                        foreach (var v in vlanList)
+                        {
+                            if (v is Vlan vlan)
+                            {
+                                if (VlanDomainId.HasValue && vlan.DomainId != VlanDomainId.Value)
+                                    continue;
+                                if (foundVlan != null)
+                                {
+                                    throw new Exception($"More than one vLan with {VlanNumber} number is present!");
+                                }
+                                foundVlan = vlan;
+                            }
+                        }
+                    }
+                    if (foundVlan == null)
+                    {
+                        throw new Exception("Cannot find Vlan!");
+                    }
+                    identifiers.Add(foundVlan.Id.ToString());
+                    identifiers.Add("subnets");
+                    if (SectionId.HasValue)
+                    {
+                        identifiers.Add(SectionId.Value.ToString());
+                    }
+                    else if (!string.IsNullOrEmpty(SectionName))
+                    {
+                        var section3 = RequestHelper.InvokeRequest("GET", controllers.sections, types.Section, null, null, new[] { SectionName })
+                            .GetAwaiter().GetResult();
+                        if (section3 != null)
+                        {
+                            var sectionObj3 = section3 as Section;
+                            identifiers.Add(sectionObj3!.Id.ToString());
+                        }
+                    }
+                    break;
+            }
+
+            var result = RequestHelper.InvokeRequest("GET", controller, types.Subnetwork, null, null, identifiers.ToArray())
+                .GetAwaiter().GetResult();
+
+            if (result != null)
+            {
+                if (result is System.Collections.IEnumerable enumerable && !(result is string))
+                {
+                    foreach (var item in enumerable)
+                    {
+                        WriteObject(item);
+                    }
+                }
+                else
+                {
+                    WriteObject(result);
+                }
+            }
+        }
+        catch (Exception ex)
+        {
+            WriteError(new ErrorRecord(ex, "GetSubnetError", ErrorCategory.InvalidOperation, null));
+        }
+    }
+}
--- a/classlib/Cmdlets/GetSubnetUsageCmdlet.cs
+++ b/classlib/Cmdlets/GetSubnetUsageCmdlet.cs
@@ -0,0 +1,66 @@
+namespace PS.IPAM.Cmdlets;
+using System;
+using System.Collections.Generic;
+using System.Management.Automation;
+using System.Net;
+using PS.IPAM;
+using PS.IPAM.Helpers;
+
+[Cmdlet(VerbsCommon.Get, "SubnetUsage", DefaultParameterSetName = "ByID")]
+public class GetSubnetUsageCmdlet : PSCmdlet
+{
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0,
+        ParameterSetName = "ByCIDR")]
+    [ValidatePattern(@"^\d+\.\d+\.\d+\.\d+/\d{1,2}$")]
+    [ValidateNotNullOrEmpty]
+    public string? CIDR { get; set; }
+
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0,
+        ParameterSetName = "ByID")]
+    [ValidateNotNullOrEmpty]
+    public int? Id { get; set; }
+
+    protected override void ProcessRecord()
+    {
+        try
+        {
+            int subnetId;
+            if (ParameterSetName == "ByCIDR")
+            {
+                var subnet = RequestHelper.InvokeRequest("GET", controllers.subnets, types.Subnetwork, null, null, new[] { "cidr", CIDR! })
+                    .GetAwaiter().GetResult();
+                if (subnet == null)
+                {
+                    throw new Exception("Cannot find subnet!");
+                }
+                var subnetObj = subnet as Subnetwork;
+                subnetId = subnetObj!.Id;
+            }
+            else
+            {
+                subnetId = Id!.Value;
+            }
+
+            var identifiers = new List<string> { subnetId.ToString(), "usage" };
+            var result = RequestHelper.InvokeRequest("GET", controllers.subnets, null, null, null, identifiers.ToArray())
+                .GetAwaiter().GetResult();
+
+            if (result != null)
+            {
+                WriteObject(result);
+            }
+        }
+        catch (Exception ex)
+        {
+            WriteError(new ErrorRecord(ex, "GetSubnetUsageError", ErrorCategory.InvalidOperation, null));
+        }
+    }
+}
--- a/classlib/Cmdlets/GetTagCmdlet.cs
+++ b/classlib/Cmdlets/GetTagCmdlet.cs
@@ -0,0 +1,98 @@
+namespace PS.IPAM.Cmdlets;
+using System;
+using System.Collections.Generic;
+using System.Management.Automation;
+using PS.IPAM;
+using PS.IPAM.Helpers;
+
+[Cmdlet(VerbsCommon.Get, "Tag", DefaultParameterSetName = "NoParams")]
+[OutputType(typeof(Tag))]
+public class GetTagCmdlet : PSCmdlet
+{
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0,
+        ParameterSetName = "ByID")]
+    [ValidateNotNullOrEmpty]
+    public int? Id { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0,
+        ParameterSetName = "ByAddressObject")]
+    [ValidateNotNullOrEmpty]
+    public Address? AddressObject { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0,
+        ParameterSetName = "BySubnetObject")]
+    [ValidateNotNullOrEmpty]
+    public Subnetwork? SubnetObject { get; set; }
+
+    protected override void ProcessRecord()
+    {
+        try
+        {
+            var identifiers = new List<string> { "tags" };
+
+            switch (ParameterSetName)
+            {
+                case "ByID":
+                    if (Id.HasValue)
+                    {
+                        identifiers.Add(Id.Value.ToString());
+                    }
+                    break;
+                case "ByAddressObject":
+                    if (AddressObject?.TagId > 0)
+                    {
+                        identifiers.Add(AddressObject.TagId.ToString());
+                    }
+                    else
+                    {
+                        return;
+                    }
+                    break;
+                case "BySubnetObject":
+                    if (SubnetObject?.TagId > 0)
+                    {
+                        identifiers.Add(SubnetObject.TagId.ToString());
+                    }
+                    else
+                    {
+                        return;
+                    }
+                    break;
+            }
+
+            var result = RequestHelper.InvokeRequest("GET", controllers.addresses, types.Tag, null, null, identifiers.ToArray())
+                .GetAwaiter().GetResult();
+
+            if (result != null)
+            {
+                if (result is System.Collections.IEnumerable enumerable && !(result is string))
+                {
+                    foreach (var item in enumerable)
+                    {
+                        WriteObject(item);
+                    }
+                }
+                else
+                {
+                    WriteObject(result);
+                }
+            }
+        }
+        catch (Exception ex)
+        {
+            WriteError(new ErrorRecord(ex, "GetTagError", ErrorCategory.InvalidOperation, null));
+        }
+    }
+}
--- a/classlib/Cmdlets/GetVlanCmdlet.cs
+++ b/classlib/Cmdlets/GetVlanCmdlet.cs
@@ -0,0 +1,134 @@
+namespace PS.IPAM.Cmdlets;
+using System;
+using System.Collections.Generic;
+using System.Management.Automation;
+using PS.IPAM;
+using PS.IPAM.Helpers;
+
+[Cmdlet(VerbsCommon.Get, "Vlan", DefaultParameterSetName = "NoParams")]
+[OutputType(typeof(Vlan))]
+public class GetVlanCmdlet : PSCmdlet
+{
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0,
+        ParameterSetName = "ByID")]
+    [ValidateNotNullOrEmpty]
+    public int? Id { get; set; }
+
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0,
+        ParameterSetName = "ByNumber")]
+    [ValidateNotNullOrEmpty]
+    public int? Number { get; set; }
+
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0,
+        ParameterSetName = "ByL2Domain")]
+    [ValidateNotNullOrEmpty]
+    public int? L2DomainId { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0,
+        ParameterSetName = "BySubnetObject")]
+    [ValidateNotNullOrEmpty]
+    public Subnetwork? SubnetObject { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0,
+        ParameterSetName = "ByDomainObject")]
+    [ValidateNotNullOrEmpty]
+    public Domain? DomainObject { get; set; }
+
+    protected override void ProcessRecord()
+    {
+        try
+        {
+            var controller = controllers.vlan;
+            var identifiers = new List<string>();
+
+            switch (ParameterSetName)
+            {
+                case "ByID":
+                    identifiers.Add(Id!.Value.ToString());
+                    break;
+                case "ByNumber":
+                    identifiers.Add("search");
+                    identifiers.Add(Number!.Value.ToString());
+                    break;
+                case "ByL2Domain":
+                    controller = controllers.l2domains;
+                    identifiers.Add(L2DomainId!.Value.ToString());
+                    identifiers.Add(subcontrollers.vlans.ToString());
+                    break;
+                case "BySubnetObject":
+                    if (SubnetObject != null && SubnetObject.VlanId > 0)
+                    {
+                        identifiers.Add(SubnetObject.VlanId.ToString());
+                    }
+                    else
+                    {
+                        return;
+                    }
+                    break;
+                case "ByDomainObject":
+                    if (DomainObject != null)
+                    {
+                        var result = RequestHelper.InvokeRequest("GET", controllers.l2domains, types.Vlan, subcontrollers.vlans, null, new[] { DomainObject.Id.ToString() })
+                            .GetAwaiter().GetResult();
+                        if (result != null)
+                        {
+                            if (result is System.Collections.IEnumerable enumerable && !(result is string))
+                            {
+                                foreach (var item in enumerable)
+                                {
+                                    WriteObject(item);
+                                }
+                            }
+                            else
+                            {
+                                WriteObject(result);
+                            }
+                        }
+                    }
+                    return;
+            }
+
+            var vlanResult = RequestHelper.InvokeRequest("GET", controller, types.Vlan, null, null, identifiers.Count > 0 ? identifiers.ToArray() : null)
+                .GetAwaiter().GetResult();
+
+            if (vlanResult != null)
+            {
+                if (vlanResult is System.Collections.IEnumerable enumerable && !(vlanResult is string))
+                {
+                    foreach (var item in enumerable)
+                    {
+                        WriteObject(item);
+                    }
+                }
+                else
+                {
+                    WriteObject(vlanResult);
+                }
+            }
+        }
+        catch (Exception ex)
+        {
+            WriteError(new ErrorRecord(ex, "GetVlanError", ErrorCategory.InvalidOperation, null));
+        }
+    }
+}
--- a/classlib/Cmdlets/GetVrfCmdlet.cs
+++ b/classlib/Cmdlets/GetVrfCmdlet.cs
@@ -0,0 +1,54 @@
+namespace PS.IPAM.Cmdlets;
+using System;
+using System.Collections.Generic;
+using System.Management.Automation;
+using PS.IPAM;
+using PS.IPAM.Helpers;
+
+[Cmdlet(VerbsCommon.Get, "Vrf", DefaultParameterSetName = "NoParams")]
+[OutputType(typeof(Vrf))]
+public class GetVrfCmdlet : PSCmdlet
+{
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0,
+        ParameterSetName = "ByID")]
+    [ValidateNotNullOrEmpty]
+    public int? Id { get; set; }
+
+    protected override void ProcessRecord()
+    {
+        try
+        {
+            var identifiers = new List<string>();
+            if (Id.HasValue)
+            {
+                identifiers.Add(Id.Value.ToString());
+            }
+
+            var result = RequestHelper.InvokeRequest("GET", controllers.vrf, types.Vrf, null, null, identifiers.Count > 0 ? identifiers.ToArray() : null)
+                .GetAwaiter().GetResult();
+
+            if (result != null)
+            {
+                if (result is System.Collections.IEnumerable enumerable && !(result is string))
+                {
+                    foreach (var item in enumerable)
+                    {
+                        WriteObject(item);
+                    }
+                }
+                else
+                {
+                    WriteObject(result);
+                }
+            }
+        }
+        catch (Exception ex)
+        {
+            WriteError(new ErrorRecord(ex, "GetVrfError", ErrorCategory.InvalidOperation, null));
+        }
+    }
+}
--- a/classlib/Cmdlets/NewAddressCmdlet.cs
+++ b/classlib/Cmdlets/NewAddressCmdlet.cs
@@ -0,0 +1,219 @@
+namespace PS.IPAM.Cmdlets;
+using System;
+using System.Collections.Generic;
+using System.Management.Automation;
+using System.Net;
+using PS.IPAM;
+using PS.IPAM.Helpers;
+
+[Cmdlet(VerbsCommon.New, "Address", DefaultParameterSetName = "BySubnetId")]
+[OutputType(typeof(Address))]
+public class NewAddressCmdlet : PSCmdlet
+{
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0,
+        ParameterSetName = "BySubnetId")]
+    [ValidateNotNullOrEmpty]
+    public int? SubnetId { get; set; }
+
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0,
+        ParameterSetName = "BySubnetObject")]
+    [ValidateNotNullOrEmpty]
+    public Subnetwork? SubnetObject { get; set; }
+
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 1)]
+    [ValidateNotNullOrEmpty]
+    public string IP { get; set; } = string.Empty;
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 2)]
+    public SwitchParameter Gateway { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 3)]
+    public string? Description { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 4)]
+    public string? Hostname { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 5)]
+    public string? MAC { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 6)]
+    public string? Owner { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 7)]
+    public int? TagId { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 8)]
+    public SwitchParameter PTRIgnore { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 7)]
+    public int? PTRId { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 10)]
+    public string? Note { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 11)]
+    public SwitchParameter ExcludePing { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 12)]
+    public int? DeviceId { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 13)]
+    public string? Port { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 14)]
+    public object? CustomFields { get; set; }
+
+    protected override void ProcessRecord()
+    {
+        try
+        {
+            int actualSubnetId;
+            if (ParameterSetName == "BySubnetObject")
+            {
+                actualSubnetId = SubnetObject!.Id;
+            }
+            else
+            {
+                actualSubnetId = SubnetId!.Value;
+            }
+
+            var body = new Dictionary<string, object>
+            {
+                { "subnetId", actualSubnetId },
+                { "ip", IP }
+            };
+
+            if (Gateway.IsPresent)
+                body["is_gateway"] = "1";
+            if (!string.IsNullOrEmpty(Description))
+                body["description"] = Description;
+            if (!string.IsNullOrEmpty(Hostname))
+                body["hostname"] = Hostname;
+            if (!string.IsNullOrEmpty(MAC))
+                body["mac"] = MAC;
+            if (!string.IsNullOrEmpty(Owner))
+                body["owner"] = Owner;
+            if (TagId.HasValue)
+                body["tag"] = TagId.Value;
+            if (PTRIgnore.IsPresent)
+                body["PTRignore"] = "1";
+            if (PTRId.HasValue)
+                body["PTR"] = PTRId.Value;
+            if (!string.IsNullOrEmpty(Note))
+                body["note"] = Note;
+            if (ExcludePing.IsPresent)
+                body["excludePing"] = "1";
+            if (DeviceId.HasValue)
+                body["deviceId"] = DeviceId.Value;
+            if (!string.IsNullOrEmpty(Port))
+                body["port"] = Port;
+
+            if (CustomFields != null)
+            {
+                var customDict = ConvertCustomFields(CustomFields);
+                foreach (var kvp in customDict)
+                {
+                    body[kvp.Key] = kvp.Value;
+                }
+            }
+
+            var result = RequestHelper.InvokeRequest("POST", controllers.addresses, null, null, body, null)
+                .GetAwaiter().GetResult();
+
+            if (result != null)
+            {
+                var address = RequestHelper.InvokeRequest("GET", controllers.addresses, types.Address, null, null, new[] { "search", IP })
+                    .GetAwaiter().GetResult();
+                if (address != null)
+                {
+                    WriteObject(address);
+                }
+            }
+        }
+        catch (Exception ex)
+        {
+            WriteError(new ErrorRecord(ex, "NewAddressError", ErrorCategory.InvalidOperation, null));
+        }
+    }
+
+    private Dictionary<string, object> ConvertCustomFields(object customFields)
+    {
+        var dict = new Dictionary<string, object>();
+        if (customFields is PSObject psobj)
+        {
+            foreach (var prop in psobj.Properties)
+            {
+                dict[prop.Name] = prop.Value ?? new object();
+            }
+        }
+        else if (customFields is Dictionary<string, object> dictObj)
+        {
+            return dictObj;
+        }
+        return dict;
+    }
+}
--- a/classlib/Cmdlets/NewFirstFreeIPCmdlet.cs
+++ b/classlib/Cmdlets/NewFirstFreeIPCmdlet.cs
@@ -0,0 +1,190 @@
+namespace PS.IPAM.Cmdlets;
+using System;
+using System.Collections.Generic;
+using System.Management.Automation;
+using PS.IPAM;
+using PS.IPAM.Helpers;
+
+[Cmdlet(VerbsCommon.New, "FirstFreeIP")]
+[OutputType(typeof(Address))]
+public class NewFirstFreeIPCmdlet : PSCmdlet
+{
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0)]
+    [ValidateNotNullOrEmpty]
+    public string SubnetId { get; set; } = string.Empty;
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 2)]
+    public SwitchParameter Gateway { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 3)]
+    public string? Description { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 4)]
+    public string? Hostname { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 5)]
+    public string? MAC { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 6)]
+    public string? Owner { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 7)]
+    public string? TagId { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 8)]
+    public SwitchParameter PTRIgnore { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 9)]
+    public string? PTRId { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 10)]
+    public string? Note { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 11)]
+    public SwitchParameter ExcludePing { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 12)]
+    public string? DeviceId { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 13)]
+    public string? Port { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true)]
+    public object? CustomFields { get; set; }
+
+    protected override void ProcessRecord()
+    {
+        try
+        {
+            var identifiers = new List<string> { "first_free" };
+            var body = new Dictionary<string, object>
+            {
+                { "subnetId", SubnetId }
+            };
+
+            if (Gateway.IsPresent)
+                body["is_gateway"] = "1";
+            if (!string.IsNullOrEmpty(Description))
+                body["description"] = Description;
+            if (!string.IsNullOrEmpty(Hostname))
+                body["hostname"] = Hostname;
+            if (!string.IsNullOrEmpty(MAC))
+                body["mac"] = MAC;
+            if (!string.IsNullOrEmpty(Owner))
+                body["owner"] = Owner;
+            if (!string.IsNullOrEmpty(TagId))
+                body["tag"] = TagId;
+            if (PTRIgnore.IsPresent)
+                body["PTRignore"] = "1";
+            if (!string.IsNullOrEmpty(PTRId))
+                body["PTR"] = PTRId;
+            if (!string.IsNullOrEmpty(Note))
+                body["note"] = Note;
+            if (ExcludePing.IsPresent)
+                body["excludePing"] = "1";
+            if (!string.IsNullOrEmpty(DeviceId))
+                body["deviceId"] = DeviceId;
+            if (!string.IsNullOrEmpty(Port))
+                body["port"] = Port;
+
+            if (CustomFields != null)
+            {
+                var customDict = ConvertCustomFields(CustomFields);
+                foreach (var kvp in customDict)
+                {
+                    body[kvp.Key] = kvp.Value;
+                }
+            }
+
+            var result = RequestHelper.InvokeRequest("POST", controllers.addresses, null, null, body, identifiers.ToArray())
+                .GetAwaiter().GetResult();
+
+            if (result != null)
+            {
+                var ip = result.ToString();
+                var address = RequestHelper.InvokeRequest("GET", controllers.addresses, types.Address, null, null, new[] { "search", ip })
+                    .GetAwaiter().GetResult();
+                if (address != null)
+                {
+                    WriteObject(address);
+                }
+            }
+        }
+        catch (Exception ex)
+        {
+            WriteError(new ErrorRecord(ex, "NewFirstFreeIPError", ErrorCategory.InvalidOperation, null));
+        }
+    }
+
+    private Dictionary<string, object> ConvertCustomFields(object customFields)
+    {
+        var dict = new Dictionary<string, object>();
+        if (customFields is PSObject psobj)
+        {
+            foreach (var prop in psobj.Properties)
+            {
+                dict[prop.Name] = prop.Value ?? new object();
+            }
+        }
+        else if (customFields is Dictionary<string, object> dictObj)
+        {
+            return dictObj;
+        }
+        return dict;
+    }
+}
--- a/classlib/Cmdlets/NewSessionCmdlet.cs
+++ b/classlib/Cmdlets/NewSessionCmdlet.cs
@@ -0,0 +1,81 @@
+namespace PS.IPAM.Cmdlets;
+using System;
+using System.Management.Automation;
+using System.Threading.Tasks;
+using PS.IPAM;
+using PS.IPAM.Helpers;
+
+[Cmdlet(VerbsCommon.New, "Session", DefaultParameterSetName = "Credentials")]
+public class NewSessionCmdlet : PSCmdlet
+{
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0)]
+    [ValidateNotNullOrEmpty]
+    [ValidatePattern("^https?://")]
+    public string URL { get; set; } = string.Empty;
+
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 1)]
+    [ValidateNotNullOrEmpty]
+    public string AppID { get; set; } = string.Empty;
+
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 2,
+        ParameterSetName = "Credentials")]
+    [ValidateNotNullOrEmpty]
+    public PSCredential? Credentials { get; set; }
+
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 2,
+        ParameterSetName = "Token")]
+    [ValidateNotNullOrEmpty]
+    public string? Token { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 3)]
+    public SwitchParameter IgnoreSSL { get; set; }
+
+    protected override void ProcessRecord()
+    {
+        try
+        {
+            Session session;
+            if (ParameterSetName == "Credentials" && Credentials != null)
+            {
+                session = SessionManager.CreateSessionWithCredentials(
+                    URL,
+                    AppID,
+                    Credentials,
+                    IgnoreSSL.IsPresent
+                ).GetAwaiter().GetResult();
+            }
+            else if (ParameterSetName == "Token" && Token != null)
+            {
+                session = SessionManager.CreateSessionWithToken(URL, AppID, Token);
+            }
+            else
+            {
+                throw new ArgumentException("Invalid parameter set");
+            }
+        }
+        catch (Exception ex)
+        {
+            WriteError(new ErrorRecord(ex, "NewSessionError", ErrorCategory.InvalidOperation, null));
+        }
+    }
+}
--- a/classlib/Cmdlets/NewSubnetCmdlet.cs
+++ b/classlib/Cmdlets/NewSubnetCmdlet.cs
@@ -0,0 +1,231 @@
+namespace PS.IPAM.Cmdlets;
+using System;
+using System.Collections.Generic;
+using System.Management.Automation;
+using System.Net;
+using PS.IPAM;
+using PS.IPAM.Helpers;
+
+[Cmdlet(VerbsCommon.New, "Subnet")]
+[OutputType(typeof(Subnetwork))]
+public class NewSubnetCmdlet : PSCmdlet
+{
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0)]
+    [ValidatePattern(@"^\d+\.\d+\.\d+\.\d+/\d{1,2}$")]
+    [ValidateNotNullOrEmpty]
+    public string CIDR { get; set; } = string.Empty;
+
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 1)]
+    [ValidateNotNullOrEmpty]
+    public int SectionId { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 2)]
+    public string? Description { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 3)]
+    public int? VlanId { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 4)]
+    public int? VrfId { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 5)]
+    public int? MasterSubnetId { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 6)]
+    public int? NameserverId { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 7)]
+    public SwitchParameter ShowName { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 8)]
+    public SwitchParameter DNSRecursive { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 9)]
+    public SwitchParameter DNSRecords { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 10)]
+    public SwitchParameter AllowRequests { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 11)]
+    public int? ScanAgentId { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 12)]
+    public SwitchParameter DiscoverSubnet { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 12)]
+    public SwitchParameter IsFull { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 12)]
+    public int? TagId { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 13)]
+    [ValidateRange(1, 100)]
+    public int? Threshold { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 14)]
+    public int? LocationId { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 15)]
+    public object? CustomFields { get; set; }
+
+    protected override void ProcessRecord()
+    {
+        try
+        {
+            var parts = CIDR.Split('/');
+            var body = new Dictionary<string, object>
+            {
+                { "subnet", parts[0] },
+                { "mask", parts[1] },
+                { "sectionId", SectionId }
+            };
+
+            if (!string.IsNullOrEmpty(Description))
+                body["description"] = Description;
+            if (VlanId.HasValue)
+                body["vlanId"] = VlanId.Value;
+            if (VrfId.HasValue)
+                body["vrfId"] = VrfId.Value;
+            if (MasterSubnetId.HasValue)
+                body["masterSubnetId"] = MasterSubnetId.Value;
+            if (NameserverId.HasValue)
+                body["nameserverId"] = NameserverId.Value;
+            if (ShowName.IsPresent)
+                body["showName"] = "1";
+            if (DNSRecursive.IsPresent)
+                body["DNSrecursive"] = "1";
+            if (DNSRecords.IsPresent)
+                body["DNSrecords"] = "1";
+            if (AllowRequests.IsPresent)
+                body["allowRequests"] = "1";
+            if (ScanAgentId.HasValue)
+                body["scanAgent"] = ScanAgentId.Value;
+            if (DiscoverSubnet.IsPresent)
+                body["discoverSubnet"] = "1";
+            if (IsFull.IsPresent)
+                body["isFull"] = "1";
+            if (TagId.HasValue)
+                body["state"] = TagId.Value;
+            if (Threshold.HasValue)
+                body["threshold"] = Threshold.Value;
+            if (LocationId.HasValue)
+                body["location"] = LocationId.Value;
+
+            if (CustomFields != null)
+            {
+                var customDict = ConvertCustomFields(CustomFields);
+                foreach (var kvp in customDict)
+                {
+                    body[kvp.Key] = kvp.Value;
+                }
+            }
+
+            var result = RequestHelper.InvokeRequest("POST", controllers.subnets, null, null, body, null)
+                .GetAwaiter().GetResult();
+
+            if (result != null)
+            {
+                // Get the created subnet
+                var subnet = RequestHelper.InvokeRequest("GET", controllers.subnets, types.Subnetwork, null, null, new[] { "cidr", CIDR })
+                    .GetAwaiter().GetResult();
+                if (subnet != null)
+                {
+                    WriteObject(subnet);
+                }
+            }
+        }
+        catch (Exception ex)
+        {
+            WriteError(new ErrorRecord(ex, "NewSubnetError", ErrorCategory.InvalidOperation, null));
+        }
+    }
+
+    private Dictionary<string, object> ConvertCustomFields(object customFields)
+    {
+        var dict = new Dictionary<string, object>();
+        if (customFields is PSObject psobj)
+        {
+            foreach (var prop in psobj.Properties)
+            {
+                dict[prop.Name] = prop.Value ?? new object();
+            }
+        }
+        else if (customFields is Dictionary<string, object> dictObj)
+        {
+            return dictObj;
+        }
+        return dict;
+    }
+}
--- a/classlib/Cmdlets/RemoveAddressCmdlet.cs
+++ b/classlib/Cmdlets/RemoveAddressCmdlet.cs
@@ -0,0 +1,51 @@
+namespace PS.IPAM.Cmdlets;
+using System;
+using System.Collections.Generic;
+using System.Management.Automation;
+using PS.IPAM;
+using PS.IPAM.Helpers;
+
+[Cmdlet(VerbsCommon.Remove, "Address", DefaultParameterSetName = "ByID")]
+public class RemoveAddressCmdlet : PSCmdlet
+{
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        Position = 0,
+        ParameterSetName = "ByID")]
+    [ValidateNotNullOrEmpty]
+    public int? Id { get; set; }
+
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0,
+        ParameterSetName = "ByAddressObject")]
+    [ValidateNotNullOrEmpty]
+    public Address? AddressObject { get; set; }
+
+    protected override void ProcessRecord()
+    {
+        try
+        {
+            int addressId;
+            if (ParameterSetName == "ByID")
+            {
+                addressId = Id!.Value;
+            }
+            else
+            {
+                addressId = AddressObject!.Id;
+            }
+
+            var identifiers = new List<string> { addressId.ToString() };
+            RequestHelper.InvokeRequest("DELETE", controllers.addresses, null, null, null, identifiers.ToArray())
+                .GetAwaiter().GetResult();
+        }
+        catch (Exception ex)
+        {
+            WriteError(new ErrorRecord(ex, "RemoveAddressError", ErrorCategory.InvalidOperation, null));
+        }
+    }
+}
--- a/classlib/Cmdlets/SetAddressCmdlet.cs
+++ b/classlib/Cmdlets/SetAddressCmdlet.cs
@@ -0,0 +1,186 @@
+namespace PS.IPAM.Cmdlets;
+using System;
+using System.Collections.Generic;
+using System.Management.Automation;
+using PS.IPAM;
+using PS.IPAM.Helpers;
+
+[Cmdlet(VerbsCommon.Set, "Address", DefaultParameterSetName = "ById")]
+[OutputType(typeof(Address))]
+public class SetAddressCmdlet : PSCmdlet
+{
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0,
+        ParameterSetName = "ById")]
+    [ValidateNotNullOrEmpty]
+    public int? Id { get; set; }
+
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0,
+        ParameterSetName = "ByAddressObject")]
+    [ValidateNotNullOrEmpty]
+    public Address? AddressObject { get; set; }
+
+    [Parameter(
+        Position = 1,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        ParameterSetName = "ById")]
+    public bool? Gateway { get; set; }
+
+    [Parameter(
+        Position = 2,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        ParameterSetName = "ById")]
+    public string? Description { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        Position = 3)]
+    public string? Hostname { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        Position = 4)]
+    public string? MAC { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        Position = 5)]
+    public string? Owner { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        Position = 6)]
+    public int? TagId { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        Position = 7)]
+    public bool? PTRIgnore { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        Position = 8)]
+    public int? PTRId { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        Position = 9)]
+    public string? Note { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        Position = 10)]
+    public bool? ExcludePing { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        Position = 11)]
+    public int? DeviceId { get; set; }
+
+    [Parameter(
+        Mandatory = false,
+        Position = 12)]
+    public string? Port { get; set; }
+
+    [Parameter(
+        Mandatory = false)]
+    public object? CustomFields { get; set; }
+
+    protected override void ProcessRecord()
+    {
+        try
+        {
+            int addressId;
+            if (ParameterSetName == "ById")
+            {
+                addressId = Id!.Value;
+            }
+            else
+            {
+                addressId = AddressObject!.Id;
+            }
+
+            var identifiers = new List<string> { addressId.ToString() };
+            var body = new Dictionary<string, object>();
+
+            if (Gateway.HasValue)
+                body["is_gateway"] = Gateway.Value;
+            if (!string.IsNullOrEmpty(Description))
+                body["description"] = Description;
+            if (!string.IsNullOrEmpty(Hostname))
+                body["hostname"] = Hostname;
+            if (!string.IsNullOrEmpty(MAC))
+                body["mac"] = MAC;
+            if (!string.IsNullOrEmpty(Owner))
+                body["owner"] = Owner;
+            if (TagId.HasValue)
+                body["tag"] = TagId.Value;
+            if (PTRIgnore.HasValue)
+                body["PTRignore"] = PTRIgnore.Value;
+            if (PTRId.HasValue)
+                body["PTR"] = PTRId.Value;
+            if (!string.IsNullOrEmpty(Note))
+                body["note"] = Note;
+            if (ExcludePing.HasValue)
+                body["excludePing"] = ExcludePing.Value;
+            if (DeviceId.HasValue)
+                body["deviceId"] = DeviceId.Value;
+            if (!string.IsNullOrEmpty(Port))
+                body["port"] = Port;
+
+            if (CustomFields != null)
+            {
+                var customDict = ConvertCustomFields(CustomFields);
+                foreach (var kvp in customDict)
+                {
+                    body[kvp.Key] = kvp.Value;
+                }
+            }
+
+            try
+            {
+                RequestHelper.InvokeRequest("PATCH", controllers.addresses, null, null, body, identifiers.ToArray())
+                    .GetAwaiter().GetResult();
+            }
+            finally
+            {
+                var address = RequestHelper.InvokeRequest("GET", controllers.addresses, types.Address, null, null, identifiers.ToArray())
+                    .GetAwaiter().GetResult();
+                if (address != null)
+                {
+                    WriteObject(address);
+                }
+            }
+        }
+        catch (Exception ex)
+        {
+            WriteError(new ErrorRecord(ex, "SetAddressError", ErrorCategory.InvalidOperation, null));
+        }
+    }
+
+    private Dictionary<string, object> ConvertCustomFields(object customFields)
+    {
+        var dict = new Dictionary<string, object>();
+        if (customFields is PSObject psobj)
+        {
+            foreach (var prop in psobj.Properties)
+            {
+                dict[prop.Name] = prop.Value ?? new object();
+            }
+        }
+        else if (customFields is Dictionary<string, object> dictObj)
+        {
+            return dictObj;
+        }
+        return dict;
+    }
+}
--- a/classlib/Cmdlets/SetSubnetCmdlet.cs
+++ b/classlib/Cmdlets/SetSubnetCmdlet.cs
@@ -0,0 +1,164 @@
+namespace PS.IPAM.Cmdlets;
+using System;
+using System.Collections.Generic;
+using System.Management.Automation;
+using PS.IPAM;
+using PS.IPAM.Helpers;
+
+[Cmdlet(VerbsCommon.Set, "Subnet")]
+[OutputType(typeof(Subnetwork))]
+public class SetSubnetCmdlet : PSCmdlet
+{
+    [Parameter(
+        Mandatory = true,
+        ValueFromPipeline = true,
+        ValueFromPipelineByPropertyName = true,
+        Position = 0)]
+    [ValidateNotNullOrEmpty]
+    public int Id { get; set; }
+
+    [Parameter(
+        Mandatory = false)]
+    public string? Description { get; set; }
+
+    [Parameter(
+        Mandatory = false)]
+    public int? VlanId { get; set; }
+
+    [Parameter(
+        Mandatory = false)]
+    public int? VrfId { get; set; }
+
+    [Parameter(
+        Mandatory = false)]
+    public int? MasterSubnetId { get; set; }
+
+    [Parameter(
+        Mandatory = false)]
+    public int? NameserverId { get; set; }
+
+    [Parameter(
+        Mandatory = false)]
+    public SwitchParameter ShowName { get; set; }
+
+    [Parameter(
+        Mandatory = false)]
+    public SwitchParameter DNSRecursive { get; set; }
+
+    [Parameter(
+        Mandatory = false)]
+    public SwitchParameter DNSRecords { get; set; }
+
+    [Parameter(
+        Mandatory = false)]
+    public SwitchParameter AllowRequests { get; set; }
+
+    [Parameter(
+        Mandatory = false)]
+    public int? ScanAgentId { get; set; }
+
+    [Parameter(
+        Mandatory = false)]
+    public SwitchParameter DiscoverSubnet { get; set; }
+
+    [Parameter(
+        Mandatory = false)]
+    public SwitchParameter IsFull { get; set; }
+
+    [Parameter(
+        Mandatory = false)]
+    public int? TagId { get; set; }
+
+    [Parameter(
+        Mandatory = false)]
+    [ValidateRange(1, 100)]
+    public int? Threshold { get; set; }
+
+    [Parameter(
+        Mandatory = false)]
+    public int? LocationId { get; set; }
+
+    [Parameter(
+        Mandatory = false)]
+    public object? CustomFields { get; set; }
+
+    protected override void ProcessRecord()
+    {
+        try
+        {
+            var identifiers = new List<string> { Id.ToString() };
+            var body = new Dictionary<string, object>();
+
+            if (!string.IsNullOrEmpty(Description))
+                body["description"] = Description;
+            if (VlanId.HasValue)
+                body["vlanId"] = VlanId.Value;
+            if (VrfId.HasValue)
+                body["vrfId"] = VrfId.Value;
+            if (MasterSubnetId.HasValue)
+                body["masterSubnetId"] = MasterSubnetId.Value;
+            if (NameserverId.HasValue)
+                body["nameserverId"] = NameserverId.Value;
+            if (ShowName.IsPresent)
+                body["showName"] = "1";
+            if (DNSRecursive.IsPresent)
+                body["DNSrecursive"] = "1";
+            if (DNSRecords.IsPresent)
+                body["DNSrecords"] = "1";
+            if (AllowRequests.IsPresent)
+                body["allowRequests"] = "1";
+            if (ScanAgentId.HasValue)
+                body["scanAgent"] = ScanAgentId.Value;
+            if (DiscoverSubnet.IsPresent)
+                body["discoverSubnet"] = "1";
+            if (IsFull.IsPresent)
+                body["isFull"] = "1";
+            if (TagId.HasValue)
+                body["state"] = TagId.Value;
+            if (Threshold.HasValue)
+                body["threshold"] = Threshold.Value;
+            if (LocationId.HasValue)
+                body["location"] = LocationId.Value;
+
+            if (CustomFields != null)
+            {
+                var customDict = ConvertCustomFields(CustomFields);
+                foreach (var kvp in customDict)
+                {
+                    body[kvp.Key] = kvp.Value;
+                }
+            }
+
+            RequestHelper.InvokeRequest("PATCH", controllers.subnets, null, null, body, identifiers.ToArray())
+                .GetAwaiter().GetResult();
+
+            var subnet = RequestHelper.InvokeRequest("GET", controllers.subnets, types.Subnetwork, null, null, identifiers.ToArray())
+                .GetAwaiter().GetResult();
+            if (subnet != null)
+            {
+                WriteObject(subnet);
+            }
+        }
+        catch (Exception ex)
+        {
+            WriteError(new ErrorRecord(ex, "SetSubnetError", ErrorCategory.InvalidOperation, null));
+        }
+    }
+
+    private Dictionary<string, object> ConvertCustomFields(object customFields)
+    {
+        var dict = new Dictionary<string, object>();
+        if (customFields is PSObject psobj)
+        {
+            foreach (var prop in psobj.Properties)
+            {
+                dict[prop.Name] = prop.Value ?? new object();
+            }
+        }
+        else if (customFields is Dictionary<string, object> dictObj)
+        {
+            return dictObj;
+        }
+        return dict;
+    }
+}
--- a/classlib/Helpers/RequestHelper.cs
+++ b/classlib/Helpers/RequestHelper.cs
@@ -0,0 +1,374 @@
+namespace PS.IPAM.Helpers;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Management.Automation;
+using System.Net.Http;
+using System.Net.Http.Headers;
+using System.Text;
+using System.Threading.Tasks;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
+using PS.IPAM;
+
+public static class RequestHelper
+{
+    // Handler for testing - allows injecting a mock HTTP handler
+    public static HttpMessageHandler? TestHttpHandler { get; set; }
+
+    public static async Task<object?> InvokeRequest(
+        string method,
+        controllers controller,
+        types? type = null,
+        subcontrollers? subController = null,
+        object? parameters = null,
+        string[]? identifiers = null,
+        bool ignoreSsl = false)
+    {
+        var tokenStatus = SessionManager.TestSession();
+        if (tokenStatus == "NoToken")
+        {
+            throw new Exception("No session available!");
+        }
+
+        if (tokenStatus == "Expired")
+        {
+            await UpdateSession();
+        }
+
+        var session = SessionManager.CurrentSession;
+        if (session == null)
+        {
+            throw new Exception("No session available!");
+        }
+
+        var uri = $"{session.URL}/api/{session.AppID}/{controller}";
+        if (subController != null)
+        {
+            uri += $"/{subController}";
+        }
+        if (identifiers != null && identifiers.Length > 0)
+        {
+            uri += $"/{string.Join("/", identifiers)}/";
+        }
+
+        using var client = SessionManager.CreateHttpClient(ignoreSsl, TestHttpHandler);
+        client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
+
+        switch (session.AuthType)
+        {
+            case AuthType.credentials:
+                client.DefaultRequestHeaders.Add("token", session.Token);
+                break;
+            case AuthType.token:
+                client.DefaultRequestHeaders.Add("phpipam-token", session.Token);
+                break;
+        }
+
+        HttpResponseMessage? response = null;
+        try
+        {
+            if (method == "GET")
+            {
+                response = await client.GetAsync(uri);
+            }
+            else if (method == "POST")
+            {
+                var jsonContent = parameters != null ? JsonConvert.SerializeObject(parameters) : "{}";
+                var content = new StringContent(jsonContent, Encoding.UTF8, "application/json");
+                response = await client.PostAsync(uri, content);
+            }
+            else if (method == "PATCH")
+            {
+                var jsonContent = parameters != null ? JsonConvert.SerializeObject(parameters) : "{}";
+                var content = new StringContent(jsonContent, Encoding.UTF8, "application/json");
+                var request = new HttpRequestMessage(new HttpMethod("PATCH"), uri)
+                {
+                    Content = content
+                };
+                response = await client.SendAsync(request);
+            }
+            else if (method == "DELETE")
+            {
+                response = await client.DeleteAsync(uri);
+            }
+
+            if (response == null)
+            {
+                return null;
+            }
+
+            var responseContent = await response.Content.ReadAsStringAsync();
+
+            if (!response.IsSuccessStatusCode)
+            {
+                if (response.StatusCode == System.Net.HttpStatusCode.NotFound)
+                {
+                    return null;
+                }
+                throw new HttpRequestException($"Request failed with status {response.StatusCode}");
+            }
+
+            if (string.IsNullOrEmpty(responseContent))
+            {
+                return null;
+            }
+
+            var jsonResponse = JsonConvert.DeserializeObject<dynamic>(responseContent);
+            if (jsonResponse == null)
+            {
+                return null;
+            }
+
+            if (type.HasValue)
+            {
+                return ConvertToTypedObjects(jsonResponse, type.Value);
+            }
+
+            return jsonResponse.data;
+        }
+        catch (HttpRequestException ex)
+        {
+            if (ex.Message.Contains("404"))
+            {
+                return null;
+            }
+            throw;
+        }
+    }
+
+    private static object? ConvertToTypedObjects(dynamic jsonResponse, types type)
+    {
+        if (jsonResponse?.data == null)
+        {
+            return null;
+        }
+
+        var data = jsonResponse.data;
+        if (data is JArray array)
+        {
+            return array.Select(item => ConvertSingleObject(item, type)).ToList();
+        }
+        else
+        {
+            return ConvertSingleObject(data, type);
+        }
+    }
+
+    private static object? ConvertSingleObject(dynamic item, types type)
+    {
+        var jobject = item as JObject;
+        if (jobject == null)
+        {
+            return null;
+        }
+
+        var customFields = new Dictionary<string, object>();
+        foreach (var prop in jobject.Properties())
+        {
+            if (prop.Name.StartsWith("custom_"))
+            {
+                customFields[prop.Name] = prop.Value?.ToObject<object>() ?? new object();
+            }
+        }
+
+        switch (type)
+        {
+            case types.Address:
+                return CreateAddress(jobject, customFields);
+            case types.Vlan:
+                return CreateVlan(jobject, customFields);
+            case types.Subnetwork:
+                return CreateSubnetwork(jobject, customFields);
+            case types.Vrf:
+                return CreateVrf(jobject, customFields);
+            case types.Section:
+                return CreateSection(jobject);
+            case types.Tag:
+                return CreateTag(jobject);
+            case types.Nameserver:
+                return CreateNameserver(jobject);
+            case types.Domain:
+                return CreateDomain(jobject);
+            default:
+                return jobject.ToObject<object>();
+        }
+    }
+
+    private static Address CreateAddress(JObject jobject, Dictionary<string, object> customFields)
+    {
+        return new Address(
+            jobject["id"]?.ToObject<int>() ?? 0,
+            jobject["subnetId"]?.ToObject<int>() ?? 0,
+            jobject["ip"]?.ToString() ?? "",
+            jobject["is_gateway"]?.ToObject<bool>() ?? false,
+            jobject["description"]?.ToString() ?? "",
+            jobject["hostname"]?.ToString() ?? "",
+            jobject["mac"]?.ToString() ?? "",
+            jobject["owner"]?.ToString() ?? "",
+            jobject["tag"]?.ToObject<int>() ?? 0,
+            jobject["deviceId"]?.ToObject<int>() ?? 0,
+            jobject["location"]?.ToString() ?? "",
+            jobject["port"]?.ToString() ?? "",
+            jobject["note"]?.ToString() ?? "",
+            jobject["lastSeen"]?.ToObject<DateTime?>(),
+            jobject["excludePing"]?.ToObject<bool>() ?? false,
+            jobject["PTRignore"]?.ToObject<bool>() ?? false,
+            jobject["PTR"]?.ToObject<int>() ?? 0,
+            jobject["firewallAddressObject"]?.ToString() ?? "",
+            jobject["editDate"]?.ToObject<DateTime?>(),
+            jobject["customer_id"]?.ToObject<int>() ?? 0,
+            customFields.Count > 0 ? customFields : null
+        );
+    }
+
+    private static Vlan CreateVlan(JObject jobject, Dictionary<string, object> customFields)
+    {
+        return new Vlan(
+            jobject["vlanId"]?.ToObject<int>() ?? 0,
+            jobject["domainId"]?.ToObject<int>() ?? 0,
+            jobject["name"]?.ToString() ?? "",
+            jobject["number"]?.ToObject<int>() ?? 0,
+            jobject["description"]?.ToString() ?? "",
+            jobject["editDate"]?.ToObject<DateTime?>(),
+            jobject["customer_id"]?.ToObject<int>() ?? 0,
+            customFields.Count > 0 ? customFields : null
+        );
+    }
+
+    private static Subnetwork CreateSubnetwork(JObject jobject, Dictionary<string, object> customFields)
+    {
+        var props = jobject.Properties().ToList();
+        return new Subnetwork(
+            jobject["id"]?.ToObject<int>() ?? 0,
+            jobject["subnet"]?.ToString() ?? "",
+            jobject["mask"]?.ToObject<int>() ?? 0,
+            jobject["sectionId"]?.ToObject<int>() ?? 0,
+            jobject["description"]?.ToString() ?? "",
+            jobject["linked_subnet"]?.ToString() ?? "",
+            jobject["firewallAddressObject"]?.ToString() ?? "",
+            jobject["vrfId"]?.ToObject<int>() ?? 0,
+            jobject["masterSubnetId"]?.ToObject<int>() ?? 0,
+            jobject["allowRequests"]?.ToObject<bool>() ?? false,
+            jobject["vlanId"]?.ToObject<int>() ?? 0,
+            jobject["showName"]?.ToObject<bool>() ?? false,
+            jobject["deviceId"]?.ToObject<int>() ?? 0,
+            jobject["permissions"]?.ToString() ?? "",
+            jobject["pingSubnet"]?.ToObject<bool>() ?? false,
+            jobject["discoverSubnet"]?.ToObject<bool>() ?? false,
+            jobject["resolveDNS"]?.ToObject<bool>() ?? false,
+            jobject["DNSrecursive"]?.ToObject<bool>() ?? false,
+            jobject["DNSrecords"]?.ToObject<bool>() ?? false,
+            jobject["nameserverId"]?.ToObject<int>() ?? 0,
+            jobject["scanAgent"]?.ToObject<bool>() ?? false,
+            jobject["isFolder"]?.ToObject<bool>() ?? false,
+            jobject["isFull"]?.ToObject<bool>() ?? false,
+            jobject["isPool"]?.ToObject<bool>() ?? false,
+            jobject["state"]?.ToObject<int>() ?? 0,
+            jobject["threshold"]?.ToObject<int>() ?? 0,
+            jobject["location"]?.ToObject<int>() ?? 0,
+            jobject["editDate"]?.ToObject<DateTime?>(),
+            jobject["lastScan"]?.ToObject<DateTime?>(),
+            jobject["lastDiscovery"]?.ToObject<DateTime?>(),
+            jobject["calculation"]?.ToObject<object>() ?? new object(),
+            customFields.Count > 0 ? customFields : null
+        );
+    }
+
+    private static Vrf CreateVrf(JObject jobject, Dictionary<string, object> customFields)
+    {
+        return new Vrf(
+            jobject["id"]?.ToObject<int>() ?? 0,
+            jobject["name"]?.ToString() ?? "",
+            jobject["rd"]?.ToString() ?? "",
+            jobject["description"]?.ToString() ?? "",
+            jobject["sections"]?.ToString() ?? "",
+            jobject["editDate"]?.ToObject<DateTime?>(),
+            customFields.Count > 0 ? customFields : null
+        );
+    }
+
+    private static Section CreateSection(JObject jobject)
+    {
+        return new Section(
+            jobject["id"]?.ToObject<int>() ?? 0,
+            jobject["name"]?.ToString() ?? "",
+            jobject["description"]?.ToString() ?? "",
+            jobject["masterSection"]?.ToObject<int>() ?? 0,
+            jobject["permissions"]?.ToString() ?? "",
+            jobject["strictMode"]?.ToObject<bool>() ?? false,
+            jobject["subnetOrdering"]?.ToString() ?? "",
+            jobject["order"]?.ToObject<int>() ?? 0,
+            jobject["editDate"]?.ToObject<DateTime?>(),
+            jobject["showSubnet"]?.ToObject<bool>() ?? false,
+            jobject["showVlan"]?.ToObject<bool>() ?? false,
+            jobject["showVRF"]?.ToObject<bool>() ?? false,
+            jobject["showSupernetOnly"]?.ToObject<bool>() ?? false,
+            jobject["DNS"]?.ToObject<int>() ?? 0
+        );
+    }
+
+    private static Tag CreateTag(JObject jobject)
+    {
+        return new Tag(
+            jobject["id"]?.ToObject<int>() ?? 0,
+            jobject["type"]?.ToString() ?? "",
+            jobject["showtag"]?.ToObject<bool>() ?? false,
+            jobject["bgcolor"]?.ToString() ?? "",
+            jobject["fgcolor"]?.ToString() ?? "",
+            jobject["compress"]?.ToString() ?? "",
+            jobject["locked"]?.ToString() ?? "",
+            jobject["updateTag"]?.ToObject<bool>() ?? false
+        );
+    }
+
+    private static Nameserver CreateNameserver(JObject jobject)
+    {
+        return new Nameserver(
+            jobject["id"]?.ToObject<int>() ?? 0,
+            jobject["name"]?.ToString() ?? "",
+            jobject["nameservers"]?.ToString() ?? "",
+            jobject["description"]?.ToString() ?? "",
+            jobject["permissions"]?.ToString() ?? "",
+            jobject["editDate"]?.ToObject<DateTime?>()
+        );
+    }
+
+    private static Domain CreateDomain(JObject jobject)
+    {
+        return new Domain(
+            jobject["id"]?.ToObject<int>() ?? 0,
+            jobject["name"]?.ToString() ?? "",
+            jobject["description"]?.ToString() ?? "",
+            jobject["sections"]?.ToString() ?? ""
+        );
+    }
+
+    private static async Task UpdateSession()
+    {
+        var session = SessionManager.CurrentSession;
+        if (session == null)
+        {
+            throw new Exception("No session available!");
+        }
+
+        var tokenStatus = SessionManager.TestSession();
+        if (tokenStatus == "Valid")
+        {
+            // Just refresh the token
+            var result = await InvokeRequest("PATCH", controllers.user, null, null, null, null);
+            // Token refresh doesn't return expires in the same format, so we'll skip updating expires
+            return;
+        }
+
+        if (tokenStatus == "Expired" && session.Credentials is PSCredential creds)
+        {
+            await SessionManager.CreateSessionWithCredentials(
+                session.URL,
+                session.AppID,
+                creds,
+                false
+            );
+        }
+    }
+}
--- a/classlib/Helpers/SessionManager.cs
+++ b/classlib/Helpers/SessionManager.cs
@@ -0,0 +1,131 @@
+namespace PS.IPAM.Helpers;
+using System;
+using System.Management.Automation;
+using System.Net.Http;
+using System.Net.Http.Headers;
+using System.Text;
+using System.Threading.Tasks;
+using Newtonsoft.Json;
+using PS.IPAM;
+
+public static class SessionManager
+{
+    private static Session? _currentSession;
+
+    public static Session? CurrentSession
+    {
+        get => _currentSession;
+        set => _currentSession = value;
+    }
+
+    public static string TestSession()
+    {
+        if (_currentSession == null)
+        {
+            return "NoToken";
+        }
+
+        if (_currentSession.Expires == null)
+        {
+            return "Valid";
+        }
+
+        if (_currentSession.Expires < DateTime.Now)
+        {
+            return "Expired";
+        }
+
+        return "Valid";
+    }
+
+    public static async Task<Session> CreateSessionWithCredentials(
+        string url,
+        string appId,
+        PSCredential credentials,
+        bool ignoreSsl = false)
+    {
+        var uri = $"{url}/api/{appId}/user";
+        var auth = Convert.ToBase64String(
+            Encoding.UTF8.GetBytes($"{credentials.UserName}:{GetPassword(credentials)}"));
+
+        using var client = CreateHttpClient(ignoreSsl);
+        client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
+        client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Basic", auth);
+
+        var response = await client.PostAsync(uri, null);
+        var content = await response.Content.ReadAsStringAsync();
+        var jsonResponse = JsonConvert.DeserializeObject<dynamic>(content);
+
+        if (jsonResponse?.success != true)
+        {
+            throw new Exception(jsonResponse?.error?.ToString() ?? "Failed to create session");
+        }
+
+        var token = jsonResponse.data.token.ToString();
+        var expires = DateTime.Parse(jsonResponse.data.expires.ToString());
+
+        _currentSession = new Session(
+            AuthType.credentials,
+            token,
+            appId,
+            url,
+            expires,
+            credentials
+        );
+
+        return _currentSession;
+    }
+
+    public static Session CreateSessionWithToken(
+        string url,
+        string appId,
+        string token)
+    {
+        _currentSession = new Session(
+            AuthType.token,
+            token,
+            appId,
+            url,
+            null,
+            null
+        );
+
+        return _currentSession;
+    }
+
+    public static void CloseSession()
+    {
+        _currentSession = null;
+    }
+
+    private static string GetPassword(PSCredential credential)
+    {
+        var ptr = System.Runtime.InteropServices.Marshal.SecureStringToBSTR(credential.Password);
+        try
+        {
+            return System.Runtime.InteropServices.Marshal.PtrToStringBSTR(ptr);
+        }
+        finally
+        {
+            System.Runtime.InteropServices.Marshal.ZeroFreeBSTR(ptr);
+        }
+    }
+
+    public static HttpClient CreateHttpClient(bool ignoreSsl = false, HttpMessageHandler? handler = null)
+    {
+        if (handler != null)
+        {
+            return new HttpClient(handler);
+        }
+
+        if (ignoreSsl)
+        {
+            var sslHandler = new HttpClientHandler
+            {
+                ServerCertificateCustomValidationCallback = (message, cert, chain, errors) => true
+            };
+            return new HttpClient(sslHandler);
+        }
+        return new HttpClient();
+    }
+}
--- a/classlib/class/address.cs
+++ b/classlib/class/address.cs
@@ -61,7 +61,7 @@ public class Address {
        this.Location              = location;
        this.Port                  = port;
        this.Note                  = note;
-        this.EditDate              = lastSeen;
+        this.LastSeen              = lastSeen;
        this.ExcludePing           = excludePing;
        this.PTRignore             = PTRignore;
        this.PTR                   = PTR;
--- a/classlib/class/session.cs
+++ b/classlib/class/session.cs
@@ -1,21 +1,22 @@
 namespace PS.IPAM;
 using System;
+using System.Management.Automation;

 [Serializable]
 public class Session {
    public AuthType AuthType { get; }
-    public string Token { get; }
+    public string Token { get; set; }
    public string AppID { get; }
    public string URL { get; }
-    public DateTime? Expires { get; }
-    public Object? Credentials { get; }
+    public DateTime? Expires { get; set; }
+    public object? Credentials { get; }
    public Session(
        AuthType authType,
        string token,
        string appId,
        string url,
        DateTime? expires,
-        Object? credentials
+        object? credentials
    ) {
        AuthType    = authType;
        Token       = token;
--- a/classlib/class/vlan.cs
+++ b/classlib/class/vlan.cs
@@ -5,6 +5,7 @@ using System.Dynamic;
 [Serializable]
 public class Vlan : DynamicObject {
    public int Id { get; }
+    public int VlanId { get; }
    public int DomainId { get; }
    public string Name { get; }
    public int Number { get; }
@@ -23,6 +24,7 @@ public class Vlan : DynamicObject {
        Object? custom_fields
    ) {
        this.Id           = vlanId;
+        this.VlanId       = vlanId;
        this.DomainId     = domainId;
        this.Name         = name;
        this.Number       = number;
--- a/classlib/classlib.csproj
+++ b/classlib/classlib.csproj
@@ -5,6 +5,14 @@
    <ImplicitUsings>enable</ImplicitUsings>
    <Nullable>enable</Nullable>
    <LangVersion>latest</LangVersion>
+    <AssemblyName>ps.ipam</AssemblyName>
+    <RootNamespace>PS.IPAM</RootNamespace>
  </PropertyGroup>

+  <ItemGroup>
+    <PackageReference Include="PowerShellStandard.Library" Version="5.1.1" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
+    <PackageReference Include="Microsoft.CSharp" Version="4.7.0" />
+  </ItemGroup>
+
 </Project>
--- a/ps.ipam.psd1
+++ b/ps.ipam.psd1
@@ -6,7 +6,7 @@
 #

@{
-    RootModule = 'ps.ipam.psm1'
+    RootModule = 'ps.ipam.dll'
    ModuleVersion = '2.0'
    GUID = 'cd573493-4245-4073-a238-fab2251d78d0'
    Author = 'Nikolay Tatarinov'
@@ -15,14 +15,14 @@
    PowerShellVersion = '5.1'

    RequiredAssemblies = @(
-        'classlib\bin\Release\netstandard2.1\publish\classlib.dll'
+        'ps.ipam.dll'
    )

    TypesToProcess = @(
        'types\types.ps1xml'
    )

-    FunctionsToExport = @(
+    CmdletsToExport = @(
        'Assign-Tag',
        'Close-Session',
        'New-Session',
@@ -41,6 +41,7 @@
        'New-Address',
        'New-FirstFreeIP',
        'Set-Address',
+        'Set-Subnet',
        'Remove-Address'
    )
    # Aliases to export from this module, for best performance, do not use wildcards and do not delete the entry, use an empty array if there are no aliases to export.