{"openapi":"3.1.0","info":{"title":"PricePilot","version":"0.1.0","description":"Pay-per-call price agent. Name a product, get the cheapest verified buyable offer across Amazon and Walmart — $0.05 per check via x402 or MPP.","x-guidance":"PricePilot returns the cheapest verified buyable offer for a product. POST /find_cheapest with an explicit spec (brand + model, plus variant fields like size, color, storage). PricePilot resolves the exact variant on Amazon and Walmart in parallel and returns the offer with the lowest price that is currently in stock. The response includes a stable product_id you can reuse to compare prices over time. Each check costs $0.05 USD."},"x-discovery":{"ownershipProofs":[]},"paths":{"/find_cheapest":{"post":{"operationId":"findCheapestProduct","summary":"Cheapest verified buyable offer for a product","tags":["shopping"],"x-payment-info":{"price":{"mode":"fixed","currency":"USD","amount":"0.050000"},"protocols":[{"x402":{}},{"mpp":{"method":"","intent":"","currency":""}}]},"responses":{"200":{"description":"Successful response","content":{"application/json":{"schema":{"type":"object","properties":{"product_id":{"type":"string"},"best":{"type":"object","properties":{"source":{"type":"string"},"price":{"type":"number"},"currency":{"type":"string"},"in_stock":{"type":"boolean"},"seller":{"type":"string"},"url":{"type":"string"},"variant":{"type":"object"}}},"all_offers":{"type":"array","items":{"type":"object","properties":{"source":{"type":"string"},"price":{"type":"number"},"in_stock":{"type":"boolean"},"url":{"type":"string"}}}},"missing_sources":{"type":"array","items":{"type":"string"}},"checked_at":{"type":"string","format":"date-time"}}}}}},"402":{"description":"Payment Required"}},"requestBody":{"required":true,"content":{"application/json":{"schema":{"type":"object","required":["brand","model"],"properties":{"brand":{"type":"string","description":"Product brand, e.g. 'Nike', 'Sony', 'LEGO'."},"model":{"type":"string","description":"Specific model name, e.g. 'Killshot 2', 'WH-1000XM5', '10497 Galaxy Explorer'."},"color":{"type":"string","description":"Color or colorway when relevant."},"size":{"type":"object","description":"Size spec for apparel/footwear.","properties":{"system":{"type":"string","enum":["US","EU","UK"]},"gender":{"type":"string","enum":["men","women","kids","unisex"]},"value":{"type":"number"}}},"condition":{"type":"string","enum":["new","used","ds","any"],"default":"new"},"postal_code":{"type":"string","description":"ZIP code for retailer pricing localization.","default":"10001"},"source_scope":{"type":"string","enum":["amazon","retail","all"],"default":"retail","description":"'amazon' = Amazon only, 'retail' = Amazon + Walmart, 'all' = future cross-retailer."}}}}}}}}},"x-service-info":{"categories":["shopping","price-comparison","ecommerce","amazon","walmart"],"docs":{"homepage":"https://pricepilot-sepia.vercel.app"}}}