PriceAtlas MCP Server

Instructions

Implementation Reference

• src/index.ts:44-51 (handler)

  The handler function for 'lookup_product', which fetches product data by calling the /api/product/${barcode} endpoint.

  async ({ barcode }) => {
    try {
      const product = await api(`/api/product/${barcode}`);
      return text(product);
    } catch (e) {
      return errorResult(`Product lookup failed: ${(e as Error).message}`);
    }
  },

• src/index.ts:40-52 (registration)

  Registration of the 'lookup_product' tool using server.tool.

  server.tool(
    'lookup_product',
    'Look up a product by barcode (EAN/UPC). Returns product name, brand, quantity, and image from Open Food Facts.',
    { barcode: z.string().describe('Product barcode (8-14 digits)') },
    async ({ barcode }) => {
      try {
        const product = await api(`/api/product/${barcode}`);
        return text(product);
      } catch (e) {
        return errorResult(`Product lookup failed: ${(e as Error).message}`);
      }
    },
  );