IG Trading MCP

Instructions

Implementation Reference

• src/services/ig-service.js:445-453 (handler)

  Core handler function in IGService that creates a watchlist by posting to the IG API /watchlists endpoint with the provided name and initial epics.

  async createWatchlist(name, epics = []) {
    try {
      const response = await this.apiClient.post('/watchlists', { name, epics });
      return response.data;
    } catch (error) {
      logger.error('Failed to create watchlist:', error.message);
      throw error;
    }
  }

• src/services/mcp-service.js:755-764 (handler)

  MCP tool handler in the switch statement that invokes the IGService.createWatchlist method with parsed arguments and formats the response as MCP content.

  case 'ig_create_watchlist':
    const newWatchlist = await igService.createWatchlist(args.name, args.epics || []);
    return {
      content: [
        {
          type: 'text',
          text: JSON.stringify(newWatchlist, null, 2),
        },
      ],
    };

• src/services/mcp-service.js:463-484 (registration)

  Tool registration in the TOOLS array, including name, description, and input schema for listing in MCP tool discovery.

  {
    name: 'ig_create_watchlist',
    description: 'Create a new watchlist',
    inputSchema: {
      type: 'object',
      properties: {
        name: {
          type: 'string',
          description: 'Watchlist name',
        },
        epics: {
          type: 'array',
          items: {
            type: 'string',
          },
          description: 'Initial epics to add',
          default: [],
        },
      },
      required: ['name'],
    },
  },

• src/services/mcp-service.js:466-483 (schema)

  Input schema definition for the ig_create_watchlist tool, specifying parameters name (required string) and epics (optional array of strings).

  inputSchema: {
    type: 'object',
    properties: {
      name: {
        type: 'string',
        description: 'Watchlist name',
      },
      epics: {
        type: 'array',
        items: {
          type: 'string',
        },
        description: 'Initial epics to add',
        default: [],
      },
    },
    required: ['name'],
  },