Radicle + GitHub MCP Server

Instructions

Clone a Radicle repository.

Args:
    rid: Repository ID (RID) to clone
    path: Optional path where to clone the repository

Implementation Reference

• src/radicle_mcp/server.py:115-134 (handler)

  The handler function for the 'rad_clone' tool. It is decorated with @mcp.tool() which registers it as an MCP tool. Executes the 'rad clone' command using the shared run_rad_command helper, handling the RID and optional path parameters, and returns success/error messages.

  @mcp.tool()
  async def rad_clone(rid: str, path: Optional[str] = None) -> str:
      """
      Clone a Radicle repository.
      
      Args:
          rid: Repository ID (RID) to clone
          path: Optional path where to clone the repository
      """
      command = ["rad", "clone", rid]
      
      if path:
          command.append(path)
      
      result = await run_rad_command(command)
      
      if result["success"]:
          return f"✅ Successfully cloned repository {rid}\n{result['stdout']}"
      else:
          return f"❌ Failed to clone repository: {result['stderr']}"

• src/radicle_mcp/server.py:37-84 (helper)

  Shared helper function used by rad_clone (and other tools) to execute 'rad' CLI commands asynchronously, capturing stdout/stderr/return code and handling errors.

  async def run_rad_command(command: List[str], cwd: Optional[str] = None) -> Dict[str, Any]:
      """
      Run a rad command and return the result.
      
      Args:
          command: List of command arguments starting with 'rad'
          cwd: Working directory to run the command in
          
      Returns:
          Dictionary with stdout, stderr, and return_code
      """
      try:
          # Ensure command starts with 'rad'
          if not command or command[0] != "rad":
              command = ["rad"] + command
              
          logger.info(f"Running command: {' '.join(command)}")
          
          process = await asyncio.create_subprocess_exec(
              *command,
              stdout=asyncio.subprocess.PIPE,
              stderr=asyncio.subprocess.PIPE,
              cwd=cwd
          )
          
          stdout, stderr = await process.communicate()
          
          return {
              "stdout": stdout.decode("utf-8").strip(),
              "stderr": stderr.decode("utf-8").strip(),
              "return_code": process.returncode,
              "success": process.returncode == 0
          }
          
      except FileNotFoundError:
          return {
              "stdout": "",
              "stderr": "rad command not found. Please ensure Radicle is installed.",
              "return_code": 127,
              "success": False
          }
      except Exception as e:
          return {
              "stdout": "",
              "stderr": f"Error running command: {str(e)}",
              "return_code": 1,
              "success": False
          }