fix: use /api/status/ for ping instead of /api/

The /api/ endpoint returns HTML (Swagger UI), not JSON.
Changed ping to use /api/status/ which returns JSON with version info.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

PaperlessMCP.Tests/Client/PaperlessClientTests.cs

@@ -31,14 +31,7 @@ public class PaperlessClientTests : IDisposable
     public async Task PingAsync_WhenSuccessful_ReturnsSuccess()
     {
         // Arrange
-        _factory.MockHandler
+        _factory.SetupGet("api/status/", """{"pngx_version": "2.0.0", "server_os": "Linux"}""");
-            .When(HttpMethod.Get, "https://paperless.example.com/api/")
-            .Respond(req =>
-            {
-                var response = new HttpResponseMessage(HttpStatusCode.OK);
-                response.Headers.Add("X-Version", "2.0.0");
-                return response;
-            });
 
         // Act
         var (success, version, error) = await _factory.Client.PingAsync();
@@ -53,7 +46,7 @@ public class PaperlessClientTests : IDisposable
     public async Task PingAsync_WhenUnauthorized_ReturnsFailure()
     {
         // Arrange
-        _factory.SetupGetWithStatus("api/", HttpStatusCode.Unauthorized);
+        _factory.SetupGetWithStatus("api/status/", HttpStatusCode.Unauthorized);
 
         // Act
         var (success, version, error) = await _factory.Client.PingAsync();

PaperlessMCP.Tests/Tools/HealthToolsTests.cs

@@ -26,14 +26,7 @@ public class HealthToolsTests : IDisposable
     public async Task Ping_WhenConnected_ReturnsSuccess()
     {
         // Arrange
-        _factory.MockHandler
+        _factory.SetupGet("api/status/", """{"pngx_version": "2.5.0", "server_os": "Linux"}""");
-            .When(HttpMethod.Get, "https://paperless.example.com/api/")
-            .Respond(req =>
-            {
-                var response = new HttpResponseMessage(HttpStatusCode.OK);
-                response.Headers.Add("X-Version", "2.5.0");
-                return response;
-            });
 
         // Act
         var result = await HealthTools.Ping(_factory.Client);
@@ -48,7 +41,7 @@ public class HealthToolsTests : IDisposable
     public async Task Ping_WhenConnectionFails_ReturnsError()
     {
         // Arrange
-        _factory.SetupGetWithStatus("api/", HttpStatusCode.Unauthorized);
+        _factory.SetupGetWithStatus("api/status/", HttpStatusCode.Unauthorized);
 
         // Act
         var result = await HealthTools.Ping(_factory.Client);
@@ -63,16 +56,7 @@ public class HealthToolsTests : IDisposable
     public async Task GetCapabilities_ReturnsCapabilitiesInfo()
     {
         // Arrange
-        _factory.MockHandler
+        _factory.SetupGet("api/status/", """{"pngx_version": "2.5.0", "server_os": "Linux"}""");
-            .When(HttpMethod.Get, "https://paperless.example.com/api/")
-            .Respond(req =>
-            {
-                var response = new HttpResponseMessage(HttpStatusCode.OK);
-                response.Headers.Add("X-Version", "2.5.0");
-                return response;
-            });
-
-        _factory.SetupGet("api/status/", "{}");
 
         // Act
         var result = await HealthTools.GetCapabilities(_factory.Client);
@@ -91,11 +75,7 @@ public class HealthToolsTests : IDisposable
     public async Task GetCapabilities_IncludesAllEndpointCategories()
     {
         // Arrange
-        _factory.MockHandler
+        _factory.SetupGet("api/status/", """{"pngx_version": "2.5.0"}""");
-            .When(HttpMethod.Get, "https://paperless.example.com/api/")
-            .Respond(HttpStatusCode.OK);
-
-        _factory.SetupGet("api/status/", "{}");
 
         // Act
         var result = await HealthTools.GetCapabilities(_factory.Client);

PaperlessMCP/Client/PaperlessClient.cs

@@ -42,19 +42,21 @@ public class PaperlessClient
     #region Health & Status
 
     /// <summary>
-    /// Checks connectivity and returns API root information.
+    /// Checks connectivity and returns API status information.
     /// </summary>
     public async Task<(bool Success, string? Version, string? Error)> PingAsync(CancellationToken cancellationToken = default)
     {
         try
         {
-            var response = await _httpClient.GetAsync("api/", cancellationToken);
+            var response = await _httpClient.GetAsync("api/status/", cancellationToken);
 
             if (response.IsSuccessStatusCode)
             {
-                // Try to extract version from response headers or body
+                // Extract version from the status response
-                var version = response.Headers.TryGetValues("X-Version", out var versions)
+                var content = await response.Content.ReadAsStringAsync(cancellationToken);
-                    ? versions.FirstOrDefault()
+                var json = JsonSerializer.Deserialize<JsonElement>(content);
+                var version = json.TryGetProperty("pngx_version", out var versionProp)
+                    ? versionProp.GetString()
                     : null;
 
                 return (true, version, null);