Manifold Markets MCP Server

Instructions

Implementation Reference

• src/index.ts:560-582 (handler)

  Handler for 'get_market' tool: parses input with GetMarketSchema, fetches market details from Manifold Markets API (/v0/market/{marketId}), handles errors, and returns the market data as JSON string.

  case 'get_market': {
    const { marketId } = GetMarketSchema.parse(args);
    const response = await fetch(`${API_BASE}/v0/market/${marketId}`, {
      headers: { Accept: 'application/json' },
    });
  
    if (!response.ok) {
      throw new McpError(
        ErrorCode.InternalError,
        `Manifold API error: ${response.statusText}`
      );
    }
  
    const market = await response.json();
    return {
      content: [
        {
          type: 'text',
          text: JSON.stringify(market, null, 2),
        },
      ],
    };
  }

• src/index.ts:65-67 (schema)

  Zod schema defining input for get_market: requires 'marketId' string.

  const GetMarketSchema = z.object({
    marketId: z.string(),
  });

• src/index.ts:227-237 (registration)

  Tool registration in listTools: defines name 'get_market', description, and inputSchema matching the Zod schema.

  {
    name: 'get_market',
    description: 'Get detailed information about a specific market',
    inputSchema: {
      type: 'object',
      properties: {
        marketId: { type: 'string', description: 'Market ID' },
      },
      required: ['marketId'],
    },
  },