Stockfish chess eval: best move, score, principal variation, multipv. $0.005/call via x402.
Connect Remote server
claude mcp add --transport http chess-eval https://chess-eval.x402supply.com/mcp
{
"mcpServers": {
"chess-eval": {
"url": "https://chess-eval.x402supply.com/mcp"
}
}
}
{
"servers": {
"chess-eval": {
"type": "http",
"url": "https://chess-eval.x402supply.com/mcp"
}
}
}
Settings > Connectors > Add custom connector
URL: https://chess-eval.x402supply.com/mcp
Tools 2 found in our last check
evaluate_positionEvaluate 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.
best_linePlay out Stockfish's predicted principal variation as SAN moves with a per-ply eval, re-searching after each ply.
Details
| Endpoint | https://chess-eval.x402supply.com/mcp (Streamable HTTP) |
| First published | 17 Jul 2026 |
| Last updated | 17 Jul 2026 |
| Registry name | com.x402supply/chess-eval |
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