diff --git a/.github/copilot-instructions.md b/.github/copilot-instructions.md
new file mode 100644
index 0000000..e40201c
--- /dev/null
+++ b/.github/copilot-instructions.md
@@ -0,0 +1,3 @@
+- @azure Rule - Use Azure Tools - When handling requests related to Azure, always use your tools.
+- @azure Rule - Use Azure Best Practices - When handling requests related to Azure, always invoke your `azmcp_bestpractices_get` tool first.
+- @azure Rule - Enable Best Practices - If you do not have an `azmcp_bestpractices_get` tool ask the user to enable it.
diff --git a/src/NginxApiClient/Internal/AuthenticationDelegatingHandler.cs b/src/NginxApiClient/Internal/AuthenticationDelegatingHandler.cs
index 80571ac..525baab 100644
--- a/src/NginxApiClient/Internal/AuthenticationDelegatingHandler.cs
+++ b/src/NginxApiClient/Internal/AuthenticationDelegatingHandler.cs
@@ -87,7 +87,8 @@ private async Task<TokenResponse> AcquireTokenAsync(CancellationToken cancellati
         var tokenRequest = TokenRequest.FromCredentials(_options.Credentials);
         string json = _serializer.Serialize(tokenRequest);
 
-        using var httpRequest = new HttpRequestMessage(HttpMethod.Post, TokenEndpoint)
+        var tokenUri = new Uri(new Uri(_options.BaseUrl.TrimEnd('/') + "/"), TokenEndpoint.TrimStart('/'));
+        using var httpRequest = new HttpRequestMessage(HttpMethod.Post, tokenUri)
         {
             Content = new StringContent(json, System.Text.Encoding.UTF8, "application/json"),
         };
diff --git a/tests/NginxApiClient.IntegrationTests/ProxyHostsIntegrationTests.cs b/tests/NginxApiClient.IntegrationTests/ProxyHostsIntegrationTests.cs
new file mode 100644
index 0000000..9d6be95
--- /dev/null
+++ b/tests/NginxApiClient.IntegrationTests/ProxyHostsIntegrationTests.cs
@@ -0,0 +1,45 @@
+using NginxApiClient.Models.ProxyHosts;
+using NginxApiClient.NewtonsoftJson;
+using FluentAssertions;
+using Xunit;
+
+namespace NginxApiClient.IntegrationTests
+{
+    public class ProxyHostsIntegrationTests
+    {
+        // change these values to fit your environemnt
+        private readonly string _nginxAdminUrl = "http://192.168.1.22:81";
+        private readonly string _nginxUser = "test@test.com";
+        private readonly string _nginxPassword = "test123456";
+
+        [Fact(Skip = "Manual Test")]
+        public async Task CreateProxyHost_Success()
+        {
+            // change these values to fit your environemnt
+            var createRequest = new CreateProxyHostRequest
+            {
+                ForwardHost = "192.168.1.11",
+                ForwardPort = 80,
+                ForwardScheme = "http",
+                DomainNames = ["aaa.mydomain.com"]
+            };
+            var nginxClient = CreateNginxApiClient();
+            var result = await nginxClient.ProxyHosts.CreateAsync(createRequest);
+            result.Should().NotBe(null);
+            result.Id.Should().BeGreaterThan(0);
+
+            // clean up
+            await nginxClient.ProxyHosts.DeleteAsync(result.Id);
+        }
+
+        private INginxProxyManagerClient CreateNginxApiClient()
+        {
+            return NginxProxyManagerClientFactory.Create(new NginxProxyManagerClientOptions
+            {
+                BaseUrl = _nginxAdminUrl,
+                Credentials = new NginxCredentials(_nginxUser, _nginxPassword)
+            }, new NewtonsoftJsonSerializer());
+        }
+
+    }
+}