OpenFoodFacts-mcp

import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js"; import { z } from "zod"; import { requestSampling, createProductAnalysisRequest, createProductComparisonRequest, createRecipeSuggestionRequest } from "../sampling/sampling-service.js"; /** * Search product in Open Food Facts database */ async function searchProduct(barcode: string) { try { const response = await fetch(`https://world.openfoodfacts.org/api/v2/product/${barcode}.json`); if (!response.ok) { throw new Error(`Failed to fetch product data: ${response.statusText}`); } const data = await response.json(); return data; } catch (error: any) { console.error(`Error fetching product data:`, error); throw new Error(`Failed to fetch product data: ${error.message}`); } } /** * Register AI analysis tools with the MCP server */ export function registerAIAnalysisTools(server: McpServer) { // Register the product analysis tool server.tool( "analyzeProduct", { barcode: z.string().describe("The product barcode (EAN, UPC, etc.)") }, async ({ barcode }: { barcode: string }) => { try { // Fetch product data const productData = await searchProduct(barcode); if (!productData.product) { return { isError: true, content: [ { type: "text", text: `Product with barcode ${barcode} not found` } ] }; } // Create sampling request for AI analysis const samplingRequest = createProductAnalysisRequest(productData.product); // Request LLM completion through the client const response = await requestSampling(server, samplingRequest); return { content: [ { type: "text", text: `Analysis of ${productData.product.product_name || "Unknown Product"} (${barcode}):\n\n${response.content.text || "No analysis available"}` } ] }; } catch (error) { console.error("Error in analyzeProduct tool:", error); return { isError: true, content: [ { type: "text", text: `Failed to analyze product: ${error instanceof Error ? error.message : String(error)}` } ] }; } } ); // Register the product comparison tool server.tool( "compareProducts", { barcode1: z.string().describe("The first product barcode (EAN, UPC, etc.)"), barcode2: z.string().describe("The second product barcode (EAN, UPC, etc.)") }, async ({ barcode1, barcode2 }: { barcode1: string, barcode2: string }) => { try { // Fetch both products const [product1Data, product2Data] = await Promise.all([ searchProduct(barcode1), searchProduct(barcode2) ]); if (!product1Data.product) { return { isError: true, content: [ { type: "text", text: `Product with barcode ${barcode1} not found` } ] }; } if (!product2Data.product) { return { isError: true, content: [ { type: "text", text: `Product with barcode ${barcode2} not found` } ] }; } // Create sampling request for comparison const samplingRequest = createProductComparisonRequest( product1Data.product, product2Data.product ); // Request LLM completion through the client const response = await requestSampling(server, samplingRequest); return { content: [ { type: "text", text: `Comparison of ${product1Data.product.product_name || "Unknown Product 1"} vs ${product2Data.product.product_name || "Unknown Product 2"}:\n\n${response.content.text || "No comparison available"}` } ] }; } catch (error) { console.error("Error in compareProducts tool:", error); return { isError: true, content: [ { type: "text", text: `Failed to compare products: ${error instanceof Error ? error.message : String(error)}` } ] }; } } ); // Register the recipe suggestion tool server.tool( "suggestRecipes", { barcode: z.string().describe("The product barcode (EAN, UPC, etc.)") }, async ({ barcode }: { barcode: string }) => { try { // Fetch product data const productData = await searchProduct(barcode); if (!productData.product) { return { isError: true, content: [ { type: "text", text: `Product with barcode ${barcode} not found` } ] }; } // Create sampling request for recipe suggestions const samplingRequest = createRecipeSuggestionRequest(productData.product); // Request LLM completion through the client const response = await requestSampling(server, samplingRequest); return { content: [ { type: "text", text: `Recipe suggestions using ${productData.product.product_name || "Unknown Product"} (${barcode}):\n\n${response.content.text || "No recipe suggestions available"}` } ] }; } catch (error) { console.error("Error in suggestRecipes tool:", error); return { isError: true, content: [ { type: "text", text: `Failed to suggest recipes: ${error instanceof Error ? error.message : String(error)}` } ] }; } } ); }