User: "Find products under $50 and add the best one to cart"
  ↓
AI calls: search_products({ maxPrice: 50 })
  ↓
AI calls: add_to_cart({ productId: "best-match" })
  ↓
AI: "I found 12 products and added the top-rated one to your cart."

import { useTools } from '@yourgpt/copilot-sdk-react';
import { z } from 'zod';

function MyTools() {
  useTools({
    search_products: {
      description: 'Search the product catalog',
      parameters: z.object({
        query: z.string(),
        maxPrice: z.number().optional(),
      }),
      handler: async ({ query, maxPrice }) => {
        return await fetchProducts(query, maxPrice);
      },
    },
  });

  return null;
}