Real-time price and offer data across major European and global marketplaces. Submit the products you care about, and kwery returns structured pricing, seller offers, and availability — through a simple REST API.
| Batch API | Stream API | |
|---|---|---|
| Best for | Up to 1 000 values per request | Up to 100 000 values per request |
| Delivery | Poll, then download | Webhooks pushed as results complete |
| Start here | Getting started | Webhooks |
- Try it — no account needed — a built-in mock server returns real response shapes without signup or credits.
- Getting started — your first request, end to end.
- Authentication — how to obtain and send credentials.
- Sources — what each of the 12 marketplaces returns (Idealo, Amazon, Google Shopping, eBay, Kaufland, and more).
- Webhooks — receive results in real time, with signature verification.
- Code samples — cURL, Node.js, and Python.
- Agent tool call — one synchronous request for AI agents that need a live, scored price.
- Errors & limits — response envelope, limits, retention.
- API Reference — the full endpoint and schema reference.
Validation problems are returned with HTTP 200 and an "error": true body — always check the error field before consuming a response. Infrastructure problems (auth, server errors) use standard HTTP status codes. See Errors & limits.