Google Tasks MCP Server

Instructions

Implementation Reference

• src/index.ts:245-280 (handler)

  Handler for the 'delete_task' tool. Validates arguments (using create_task validator, note potential bug), extracts taskId, calls Google Tasks API to delete the task, returns success message or throws error.

  if (request.params.name === "delete_task") {
    if (!isValidCreateTaskArgs(request.params.arguments)) {
      throw new McpError(
        ErrorCode.InvalidParams,
        "Invalid arguments for creating a task. 'title' must be a string, and 'notes' must be a string or undefined."
      );
    }
    const args = request.params.arguments;
    const taskId  = args.taskId;
    if (!taskId) {
      throw new McpError(
        ErrorCode.InvalidParams,
        "The 'taskId' field is required."
      );
    }
    try {
      await tasks.tasks.delete({
        tasklist: "@default",
        task: taskId,
      });
  
      return {
        content: [
          {
            type: "text",
            text: "Task deleted successfully.",
          },
        ],
      };
    } catch (error) {
      throw new McpError(
        ErrorCode.InternalError,
        `Tasks API error: ${error}`
      );
    }
  }

• src/index.ts:162-172 (registration)

  Registration of the 'delete_task' tool in the ListTools response, including name, description, and input schema.

  {
    name: "delete_task",
    description: "Delete a task from the default task list",
    inputSchema: {
      type: "object",
      properties: {
        taskId: { type: "string", description: "ID of the task to delete" },
      },
      required: ["taskId"],
    },
  },