chess402.vercel.app/api/cloud-eval

Stockfish cloud evaluation for a FEN position. Returns depth, evaluation, and principal variation(s) when Lichess has the position cached.

Price $0.005
Method POST
Protocol x402
Last probe 402
Verified 2026-10-01

Call it

# 1. Ask the endpoint what it costs (no payment, no wallet needed):
curl -i -X POST 'https://chess402.vercel.app/api/cloud-eval'

# -> HTTP/1.1 402 Payment Required
#    the response carries the price, asset and pay-to address.

# 2. Pay and retry with any x402 client:
npx x402-fetch -X POST 'https://chess402.vercel.app/api/cloud-eval'

Endpoint: https://chess402.vercel.app/api/cloud-eval. Operated by chess402.vercel.app, not by Animica. Price and availability were correct at the last probe on 2026-10-01 and are set by the operator, who may change them.

Other endpoints on chess402.vercel.app

chess402.vercel.app/api/masters

Masters opening explorer for a position. Returns top moves, win/draw/loss rates, and recent top master games from the Lichess masters database.

POST · $0.003

All 2 endpoints on chess402.vercel.app →