chess402.vercel.app publishes 2 machine-payable endpoints over the x402 protocol, priced from $0.003 to $0.005 per call. Each was probed directly; the response code below is what it returned.
| Endpoint | Method | Price | Probe |
|---|---|---|---|
| /api/cloud-eval | POST | $0.005 | 402 |
| /api/masters | POST | $0.003 | 402 |
Stockfish cloud evaluation for a FEN position. Returns depth, evaluation, and principal variation(s) when Lichess has the position cached.
Masters opening explorer for a position. Returns top moves, win/draw/loss rates, and recent top master games from the Lichess masters database.