chess-eval
Stockfish chess eval: best move, score, principal variation, multipv. $0.005/call via x402.
Should I use this
Quality & Safety
Based on automated analysis of tool definitions and protocol compliance.
Context Cost
This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.
Install
One-Click Install
Add this to your `claude_desktop_config.json` file:
{
"mcpServers": {
"chess-eval": {
"url": "https://chess-eval.x402supply.com/mcp"
}
}
}Remote endpoints
https://chess-eval.x402supply.com/mcpstreamable-httpWhat it can do
Tool inventory
Tools (2)
⚪evaluate_position(fen, depth, multipv)
Evaluate a chess position with Stockfish: best move, centipawn/mate score, principal variation, and optional multipv. No mocks — a real single-threaded Stockfish 10 (asm.js) runs in-isolate per call.
Input Schema
{
"type": "object",
"properties": {
"fen": {
"type": "string"
},
"depth": {
"type": "integer",
"minimum": 1,
"maximum": 18
},
"multipv": {
"type": "integer",
"minimum": 1,
"maximum": 5
}
},
"required": [
"fen"
],
"additionalProperties": false,
"$schema": "http://json-schema.org/draft-07/schema#"
}⚪best_line(fen, depth, maxPlies)
Play out Stockfish's predicted principal variation as SAN moves with a per-ply eval, re-searching after each ply.
Input Schema
{
"type": "object",
"properties": {
"fen": {
"type": "string"
},
"depth": {
"type": "integer",
"minimum": 1,
"maximum": 18
},
"maxPlies": {
"type": "integer",
"minimum": 1,
"maximum": 40
}
},
"required": [
"fen"
],
"additionalProperties": false,
"$schema": "http://json-schema.org/draft-07/schema#"
}Community
Evidence