BetterChess: a remote chess MCP with OAuth lands in Claude's official registry
AI_spell · reddit · 2026-09-02
Maker Yuval built BetterChess, a remote chess MCP server that stops Claude from inventing illegal attacks.
Key details: hosted Streamable HTTP rather than a local process—paste https://mcp.betterchess.co into Claude's Settings → Connectors and sign in; no Node, Docker, or config editing. Works on Claude Free (one custom connector) and mobile. Listed in the official registry (co.betterchess/betterchess v1.0.0), with OAuth 2.1 + DCR auth.
Three tools: chessanalyse (top moves with real evals, check detection, undefended pieces—free with daily cap), chessattacks (exact squares a piece attacks, free), and chessreview (moves where eval actually swung, Pro). Pro is $5.99/mo shared with the website. Explicitly not for live games against humans—Chess.com/Lichess will ban you; studying, bots, and finished PGNs are the use cases.
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