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chess402.vercel.app api cloud-eval
https://chess402.vercel.app/api/cloud-eval
answers 402
Stockfish cloud evaluation for a FEN position. Returns depth, evaluation, and principal variation(s) when Lichess has the position cached.
We sent a real
POST request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.005
- Network
- base
- Pay to
- 0xfbd46201267609ad3c66bd1b99b7f1cc80b1852f
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- POST
- Response latency
- 171 ms
- Payment options
- 1 usable of 1
- Last checked
- 2026-09-06T01:17:43.766Z (24d ago)
- Category
- other
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fchess402.vercel.app%2Fapi%2Fcloud-eval"