♟️ Chess Best Move x402 API

Status: healthy ✓

Timestamp: 2026-01-02T18:54:01.816Z

Uptime: 4991873s

Version: v22.21.1

About

This API provides Stockfish chess engine analysis for any chess position using FEN notation. Each request costs $0.001 and is powered by the x402 payment protocol.

API Endpoint

GET /best-move?fen=<FEN_STRING>&depth=<DEPTH>

Parameters

fen (required): FEN string representing the chess position
depth (optional): Analysis depth (1-30, default: 10)

Example

http://chess.ruliad.xyz/best-move?fen=rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR%20w%20KQkq%20-%200%201&depth=15

Resources

If you made it here, you are probably developing an x402 app. Here are the Docs.

DM me on Discord at @.masonhall with the keyword "The white rabbit told me to say 'Echo'" and I'll send you some free credits.