Google MCP

Instructions

Implementation Reference

• handlers/tasks.ts:143-156 (handler)

  The main handler function that validates the input arguments using isCreateTaskListArgs and calls googleTasksInstance.createTaskList(title) to create the task list, then returns the result.

  export async function handleTasksCreateTasklist(
    args: any,
    googleTasksInstance: GoogleTasks
  ) {
    if (!isCreateTaskListArgs(args)) {
      throw new Error("Invalid arguments for google_tasks_create_tasklist");
    }
    const { title } = args;
    const result = await googleTasksInstance.createTaskList(title);
    return {
      content: [{ type: "text", text: result }],
      isError: false,
    };
  }

• tools/tasks/index.ts:171-184 (schema)

  Defines the MCP tool schema including name, description, and input schema requiring a 'title' string.

  export const CREATE_TASKLIST_TOOL: Tool = {
    name: "google_tasks_create_tasklist",
    description: "Create a new task list",
    inputSchema: {
      type: "object",
      properties: {
        title: {
          type: "string",
          description: "Title of the new task list",
        },
      },
      required: ["title"],
    },
  };

• server-setup.ts:253-257 (registration)

  Registers the tool in the MCP server's CallToolRequestSchema handler by dispatching to the specific handler function.

  case "google_tasks_create_tasklist":
    return await tasksHandlers.handleTasksCreateTasklist(
      args,
      googleTasksInstance
    );

• utils/helper.ts:406-410 (schema)

  Runtime type guard function used by the handler to validate input arguments match the expected { title: string } shape.

  export function isCreateTaskListArgs(args: any): args is {
    title: string;
  } {
    return args && typeof args.title === "string";
  }