ProwlKit-MCP

An MCP (Model Context Protocol) server for Xcode project introspection, enabling AI assistants like Claude to read schemes, targets, build projects, and run tests directly from your .xcodeproj or .xcworkspace.

Part of the ProwlLabs tooling ecosystem (alongside ProwlKit).

Features

• Zero-Config Workspace Path Jailing: Safely exposes Xcode projects to the MCP agent without manual path configurations.

• Live Streaming Build Logs: Stream build output and test progress directly into your Claude chat utilizing MCP's Progress API.

• Smart Scheme Discovery: Instantly list all targets, schemes, and configurations.

• Build Projects & Tests: Build Xcode projects/workspaces and get structured, readable errors and warnings (file, line, column, message) using xcbeautify.

• SourceKit-LSP Integration: Retrieve rich Xcode build settings, hover definitions, and compiler flags directly from the Swift Language Server.

Related MCP server: Xcode MCP Server

Installation (Recommended)

ProwlMCP is installed and automatically configured for Claude Desktop via Homebrew:

brew install ProwlLabs/prowlKit-mcp/prowl-mcp

That's it! Homebrew will compile the server and automatically inject the connection settings into your claude_desktop_config.json.

Completely Restart Claude Desktop (Quit the application) to load the new MCP server. You will see prowl-mcp tools available in the chat (via the "+" or Tools icon).

Manual Installation (From Source)

1. Clone the repository and navigate to the project directory:

   git clone https://github.com/ProwlLabs/prowlKit-mcp.git
   cd prowlKit-mcp

2. Build the project:

   swift build -c release

3. Connect to Claude Desktop by adding this to your claude_desktop_config.json:

   {
     "mcpServers": {
       "prowl-mcp": {
         "command": "/absolute/path/to/prowlKit-mcp/.build/release/prowl-mcp"
       }
     }
   }

Available Tools

• list_schemes_targets(project_path): Runs xcodebuild -list -json to return project/workspace schemes, targets, and configurations.

• build_project(project_path, scheme, configuration): Wraps xcodebuild build and parses errors/warnings into structured JSON.

• run_tests(project_path, scheme, destination): Wraps xcodebuild test and parses .xcresult files via xcresulttool.

• git_info(repo_path, action, target_file): Runs git diff or git blame on a repository or specific file.

• swiftlint(project_path, target_path): Runs swiftlint lint --reporter json to check for Swift coding style and convention violations.

Roadmap

• build_project implementation

• run_tests implementation

• Git diff/blame tool integration

• SwiftLint violations tool