GitLab MCP Code Review

Instructions

Unapprove a merge request.

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

Implementation Reference

• server.py:502-522 (handler)

  The main handler function for the 'unapprove_merge_request' tool. It is registered via the @mcp.tool() decorator. The function fetches the project and merge request using the GitLab client, attempts to unapprove the MR with mr.unapprove(), logs any errors, and returns the MR details.

  @mcp.tool()
  def unapprove_merge_request(ctx: Context, project_id: str, merge_request_iid: str) -> Dict[str, Any]:
      """
      Unapprove a merge request.
      
      Args:
          project_id: The GitLab project ID or URL-encoded path
          merge_request_iid: The merge request IID (project-specific ID)
      Returns:
          Dict containing the unapproval information
      """
      gl = ctx.request_context.lifespan_context
      project = gl.projects.get(project_id)
      mr = project.mergerequests.get(merge_request_iid)
      
      try:
          mr.unapprove()
      except Exception as e:
          logger.error(f"Failed to unapprove merge request {merge_request_iid}: {e}")
      
      return mr.asdict()