MCP Test Server

Instructions

Implementation Reference

• src/domains/users.js:18-32 (handler)

  The core handler function that retrieves a specific user by ID from the mock users data and returns success or error response.

  static getById(id) {
    const user = users.find(u => u.id === id);
    
    if (!user) {
      return {
        success: false,
        message: 'User not found'
      };
    }
  
    return {
      success: true,
      data: user
    };
  }

• src/domains/users.js:86-99 (schema)

  Input schema definition for the 'get_user' tool, specifying a required numeric 'id' parameter.

  {
    name: 'get_user',
    description: 'Get a specific user by ID',
    inputSchema: {
      type: 'object',
      properties: {
        id: {
          type: 'number',
          description: 'User ID'
        }
      },
      required: ['id']
    }
  },

• mcp-server.js:56-57 (registration)

  Tool call dispatcher that maps 'get_user' requests to the UserService.getById handler.

  case 'get_user':
    return createMcpResponse(UserService.getById(args.id));

• mcp-server.js:38-46 (registration)

  Registers the list tools handler which includes the 'get_user' schema from userToolSchemas.

  this.server.setRequestHandler(ListToolsRequestSchema, async () => {
    return {
      tools: [
        ...userToolSchemas,
        ...taskToolSchemas,
        searchToolSchema
      ]
    };
  });