Add get_pull_request_ci_failures tool to retrieve failed CI job logs for PRs

README.md

@@ -514,6 +514,13 @@ The following sets of tools are available:
   - `run_id`: Workflow run ID (required when using failed_only) (number, optional)
   - `tail_lines`: Number of lines to return from the end of the log (number, optional)
 
+- **get_pull_request_ci_failures** - Get PR CI failures
+  - `owner`: Repository owner (string, required)
+  - `pullNumber`: Pull request number (number, required)
+  - `repo`: Repository name (string, required)
+  - `return_content`: Returns actual log content instead of URLs (default: true) (boolean, optional)
+  - `tail_lines`: Number of lines to return from the end of each log (default: 500) (number, optional)
+
 - **get_workflow_run** - Get workflow run
   - `owner`: Repository owner (string, required)
   - `repo`: Repository name (string, required)
@@ -965,6 +972,13 @@ The following sets of tools are available:
   - `repo`: Repository name (string, required)
   - `title`: PR title (string, required)
 
+- **get_pull_request_ci_failures** - Get PR CI failures
+  - `owner`: Repository owner (string, required)
+  - `pullNumber`: Pull request number (number, required)
+  - `repo`: Repository name (string, required)
+  - `return_content`: Returns actual log content instead of URLs (default: true) (boolean, optional)
+  - `tail_lines`: Number of lines to return from the end of each log (default: 500) (number, optional)
+
 - **list_pull_requests** - List pull requests
   - `base`: Filter by base branch (string, optional)
   - `direction`: Sort direction (string, optional)

docs/remote-server.md

@@ -19,7 +19,7 @@ Below is a table of available toolsets for the remote GitHub MCP Server. Each to
 <!-- START AUTOMATED TOOLSETS -->
 | Name           | Description                                      | API URL                                               | 1-Click Install (VS Code)                                                                                                                                                                                                 | Read-only Link                                                                                                 | 1-Click Read-only Install (VS Code)                                                                                                                                                                                                 |
 |----------------|--------------------------------------------------|-------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
-| all            | All available GitHub MCP tools                    | https://api.githubcopilot.com/mcp/                    | [Install](https://insiders.vscode.dev/redirect/mcp/install?name=github&config=%7B%22type%22%3A%20%22http%22%2C%22url%22%3A%20%22https%3A%2F%2Fapi.githubcopilot.com%2Fmcp%2F%22%7D)                                      | [read-only](https://api.githubcopilot.com/mcp/readonly)                                                      | [Install read-only](https://insiders.vscode.dev/redirect/mcp/install?name=github&config=%7B%22type%22%3A%20%22http%22%2C%22url%22%3A%20%22https%3A%2F%2Fapi.githubcopilot.com%2Fmcp%2Freadonly%22%7D) |
+| Default        | Default toolset (recommended for most users)      | https://api.githubcopilot.com/mcp/                    | [Install](https://insiders.vscode.dev/redirect/mcp/install?name=github&config=%7B%22type%22%3A%20%22http%22%2C%22url%22%3A%20%22https%3A%2F%2Fapi.githubcopilot.com%2Fmcp%2F%22%7D)                                      | [read-only](https://api.githubcopilot.com/mcp/readonly)                                                      | [Install read-only](https://insiders.vscode.dev/redirect/mcp/install?name=github&config=%7B%22type%22%3A%20%22http%22%2C%22url%22%3A%20%22https%3A%2F%2Fapi.githubcopilot.com%2Fmcp%2Freadonly%22%7D) |
 | Actions        | GitHub Actions workflows and CI/CD operations    | https://api.githubcopilot.com/mcp/x/actions           | [Install](https://insiders.vscode.dev/redirect/mcp/install?name=gh-actions&config=%7B%22type%22%3A%20%22http%22%2C%22url%22%3A%20%22https%3A%2F%2Fapi.githubcopilot.com%2Fmcp%2Fx%2Factions%22%7D)                         | [read-only](https://api.githubcopilot.com/mcp/x/actions/readonly)                                              | [Install read-only](https://insiders.vscode.dev/redirect/mcp/install?name=gh-actions&config=%7B%22type%22%3A%20%22http%22%2C%22url%22%3A%20%22https%3A%2F%2Fapi.githubcopilot.com%2Fmcp%2Fx%2Factions%2Freadonly%22%7D)                                                                          |
 | Code Security  | Code security related tools, such as GitHub Code Scanning | https://api.githubcopilot.com/mcp/x/code_security     | [Install](https://insiders.vscode.dev/redirect/mcp/install?name=gh-code_security&config=%7B%22type%22%3A%20%22http%22%2C%22url%22%3A%20%22https%3A%2F%2Fapi.githubcopilot.com%2Fmcp%2Fx%2Fcode_security%22%7D)             | [read-only](https://api.githubcopilot.com/mcp/x/code_security/readonly)                                        | [Install read-only](https://insiders.vscode.dev/redirect/mcp/install?name=gh-code_security&config=%7B%22type%22%3A%20%22http%22%2C%22url%22%3A%20%22https%3A%2F%2Fapi.githubcopilot.com%2Fmcp%2Fx%2Fcode_security%2Freadonly%22%7D)                                                              |
 | Dependabot     | Dependabot tools                                 | https://api.githubcopilot.com/mcp/x/dependabot        | [Install](https://insiders.vscode.dev/redirect/mcp/install?name=gh-dependabot&config=%7B%22type%22%3A%20%22http%22%2C%22url%22%3A%20%22https%3A%2F%2Fapi.githubcopilot.com%2Fmcp%2Fx%2Fdependabot%22%7D)                   | [read-only](https://api.githubcopilot.com/mcp/x/dependabot/readonly)                                           | [Install read-only](https://insiders.vscode.dev/redirect/mcp/install?name=gh-dependabot&config=%7B%22type%22%3A%20%22http%22%2C%22url%22%3A%20%22https%3A%2F%2Fapi.githubcopilot.com%2Fmcp%2Fx%2Fdependabot%2Freadonly%22%7D)                                                                    |

pkg/buffer/buffer.go

@@ -32,7 +32,7 @@ func ProcessResponseAsRingBufferToEnd(httpResp *http.Response, maxJobLogLines in
 	writeIndex := 0
 
 	scanner := bufio.NewScanner(httpResp.Body)
-	scanner.Buffer(make([]byte, 0, 64*1024), 1024*1024)
+	scanner.Buffer(make([]byte, 0, 64*1024), 10*1024*1024) // 10MB max line size
 
 	for scanner.Scan() {
 		line := scanner.Text()

pkg/github/__toolsnaps__/get_pull_request_ci_failures.snap

@@ -0,0 +1,50 @@
+{
+  "annotations": {
+    "readOnlyHint": true,
+    "title": "Get PR CI failures"
+  },
+  "description": "Get failed CI workflow job logs for a pull request. This tool finds workflow runs triggered by a PR, identifies failed jobs, and retrieves their logs for debugging CI failures.",
+  "inputSchema": {
+    "type": "object",
+    "required": [
+      "owner",
+      "repo",
+      "pullNumber"
+    ],
+    "properties": {
+      "include_annotations": {
+        "type": "boolean",
+        "description": "Include GitHub Check Run annotations - structured error messages with file/line info (default: true). Set to false to reduce output size.",
+        "default": true
+      },
+      "include_logs": {
+        "type": "boolean",
+        "description": "Include tail of job logs for context (default: true). Set to false if annotations are sufficient or to reduce output size.",
+        "default": true
+      },
+      "max_failed_jobs": {
+        "type": "number",
+        "description": "Maximum number of failed jobs to fetch details for (default: 3). Use 0 for no limit. Reduce if output is too large.",
+        "default": 3
+      },
+      "owner": {
+        "type": "string",
+        "description": "Repository owner"
+      },
+      "pullNumber": {
+        "type": "number",
+        "description": "Pull request number"
+      },
+      "repo": {
+        "type": "string",
+        "description": "Repository name"
+      },
+      "tail_lines": {
+        "type": "number",
+        "description": "Number of log lines to include from end of each job (default: 100). Reduce if output is too large.",
+        "default": 100
+      }
+    }
+  },
+  "name": "get_pull_request_ci_failures"
+}