GitLab MCP Code Review

Instructions

Add a general comment to a merge request.

Args:
    project_id: The GitLab project ID or URL-encoded path
    merge_request_iid: The merge request IID (project-specific ID)
    body: The comment text
Returns:
    Dict containing the created comment information

Implementation Reference

• server.py:345-363 (handler)

  The handler function implementing the 'add_merge_request_comment' tool. It uses the GitLab client to retrieve the project and merge request, then creates a note (comment) on the merge request and returns its data. The @mcp.tool() decorator handles registration and schema inference from the signature and docstring.

  @mcp.tool()
  def add_merge_request_comment(ctx: Context, project_id: str, merge_request_iid: str, body: str) -> Dict[str, Any]:
      """
      Add a general comment to a merge request.
      
      Args:
          project_id: The GitLab project ID or URL-encoded path
          merge_request_iid: The merge request IID (project-specific ID)
          body: The comment text
      Returns:
          Dict containing the created comment information
      """
      gl = ctx.request_context.lifespan_context
      project = gl.projects.get(project_id)
      mr = project.mergerequests.get(merge_request_iid)
      
      note = mr.notes.create({'body': body})
      
      return note.asdict()