Divide and Conquer MCP Server

Instructions

Implementation Reference

• src/index.ts:782-821 (handler)

  The handler function for 'mark_task_done' tool. It validates the index, reads the task data from config file, sets the checklist item's 'done' to true, updates progress metadata, writes back to file, and returns success message.

  private async markTaskDone(args: any): Promise<any> {
    if (args?.index === undefined) {
      throw new McpError(ErrorCode.InvalidParams, 'Index is required');
    }
  
    try {
      const taskData = await this.readTaskData();
      
      // Check if the index is valid
      if (args.index < 0 || args.index >= taskData.checklist.length) {
        throw new McpError(ErrorCode.InvalidParams, `Invalid index: ${args.index}`);
      }
      
      // Mark the checklist item as done
      taskData.checklist[args.index].done = true;
      
      // Write the updated task data to the file
      await this.writeTaskData(taskData);
      
      return {
        content: [
          {
            type: 'text',
            text: 'Task marked as done.',
          },
        ],
      };
    } catch (error) {
      console.error('Error marking task as done:', error);
      return {
        content: [
          {
            type: 'text',
            text: `Error marking task as done: ${error instanceof Error ? error.message : String(error)}`,
          },
        ],
        isError: true,
      };
    }
  }

• src/index.ts:267-276 (schema)

  Input schema for the 'mark_task_done' tool, requiring a 0-based index of the checklist item.

  inputSchema: {
    type: 'object',
    properties: {
      index: {
        type: 'number',
        description: 'The index of the checklist item to mark as done (0-based)'
      }
    },
    required: ['index']
  }

• src/index.ts:264-277 (registration)

  Registration of the 'mark_task_done' tool in the ListTools response, defining name, description, and input schema.

  {
    name: 'mark_task_done',
    description: 'Marks a checklist item as done.',
    inputSchema: {
      type: 'object',
      properties: {
        index: {
          type: 'number',
          description: 'The index of the checklist item to mark as done (0-based)'
        }
      },
      required: ['index']
    }
  },

• src/index.ts:434-435 (registration)

  Dispatch case in the CallToolRequest handler that routes 'mark_task_done' calls to the markTaskDone method.

  case 'mark_task_done':
    return await this.markTaskDone(request.params.arguments);