GitLab MCP Server

Instructions

Implementation Reference

• src/handlers/merge-requests.ts:505-521 (handler)

  Handler function that unresolves a merge request discussion by sending a PUT request to the GitLab API with resolved: false.

  async unresolveMRDiscussion(args: ResolveMRDiscussionParams) {
    const data = await this.client.put(
      `/projects/${encodeURIComponent(args.project_id)}/merge_requests/${
        args.merge_request_iid
      }/discussions/${args.discussion_id}`,
      { resolved: false }
    );
  
    return {
      content: [
        {
          type: "text",
          text: JSON.stringify(data, null, 2),
        },
      ],
    };
  }

• src/tools/merge-requests.ts:518-538 (schema)

  JSON schema definition for the unresolve_mr_discussion tool inputs.

    name: 'unresolve_mr_discussion',
    description: 'Mark a discussion on a merge request as unresolved',
    inputSchema: {
      type: 'object',
      properties: {
        project_id: {
          type: 'string',
          description: 'Project ID or path',
        },
        merge_request_iid: {
          type: 'number',
          description: 'Merge request internal ID',
        },
        discussion_id: {
          type: 'string',
          description: 'The ID of the discussion to unresolve',
        },
      },
      required: ['project_id', 'merge_request_iid', 'discussion_id'],
    },
  },

• src/server.ts:231-234 (registration)

  Registration of the tool in the MCP server switch statement, dispatching to the handler.

  case "unresolve_mr_discussion":
    return await this.mergeRequestHandlers.unresolveMRDiscussion(
      args as unknown as ResolveMRDiscussionParams
    );