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com.x402supply/chess-eval

by x402supply.com · remote · no sign-in to list tools · v1.0.1 · published by com.x402supply

Stockfish chess eval: best move, score, principal variation, multipv. $0.005/call via x402.

Changes · 2
CompareRegistry entry

2 tools: 2 change things.

Scanned Oct 21, 2026

No check matched anything in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http chess-eval https://chess-eval.x402supply.com/mcp

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

2 tools

Changes things 2Claude Code: ask
  • best_linePlay out Stockfish's predicted principal variation as SAN moves with a per-ply eval, re-searching after each ply.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Play out Stockfish's predicted principal variation as SAN moves with a per-ply eval, re-searching after each ply.
  • evaluate_positionEvaluate a chess position with Stockfish: best move, centipawn/mate score, principal variation, and optional multipv.No findings

    Why it is in this group

    • The name "evaluate_position" says "evaluate": a word for a change.
    Description, as the server wrote it
    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.

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 1.0.1. Values in angle brackets are yours to fill in.

claude mcp add --transport http chess-eval https://chess-eval.x402supply.com/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [],
    "ask": [
      "mcp__chess-eval__evaluate_position",
      "mcp__chess-eval__best_line"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as chess-eval. Review it before you use it.