chess-eval

Evaluate a chess position with Stockfish: best move, centipawn/mate score, principal variation, and optional multipv. No mocks — a real single-threaded Stockfish 10 (asm.js) runs in-isolate per call.; Play out Stockfish's predicted principal variation as SAN moves with a per-ply eval, re-searching after each ply.

Endpoints

• POST https://chess-eval.x402supply.com/tools/evaluate_position
  Evaluate a chess position with Stockfish: best move, centipawn/mate score, principal variation, and optional multipv. No mocks — a real single-threaded Stockfish 10 (asm.js) runs in-isolate per call.
• POST https://chess-eval.x402supply.com/tools/best_line
  Play out Stockfish's predicted principal variation as SAN moves with a per-ply eval, re-searching after each ply.

MCP endpoint: https://chess-eval.x402supply.com/mcp

OpenAPI description

Pay per call in USDC on Base via x402. Part of https://x402supply.com