Stockfish chess eval: best move, score, principal variation, multipv. $0.005/call via x402.
Maintain this server? Claim it
Call this server's tools from your browser. Nothing to install.
Requests go through mcptry because browsers can't call most MCP servers directly. Header values are sent to the server for that request only and are never stored or logged.
Tool list from our last check. Connect live to refresh it.
Play out Stockfish's predicted principal variation as SAN moves with a per-ply eval, re-searching after each ply.
This tool isn't marked read-only, so it may change something on the server or in an account you connected.
Play out Stockfish's predicted principal variation as SAN moves with a per-ply eval, re-searching after each ply.
| Argument | Type | Description |
|---|---|---|
| fen* | string | |
| depth | integer | |
| maxPlies | integer |
{
"type": "object",
"$schema": "http://json-schema.org/draft-07/schema#",
"required": [
"fen"
],
"properties": {
"fen": {
"type": "string"
},
"depth": {
"type": "integer",
"maximum": 18,
"minimum": 1
},
"maxPlies": {
"type": "integer",
"maximum": 40,
"minimum": 1
}
},
"additionalProperties": false
}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.
| Argument | Type | Description |
|---|---|---|
| fen* | string | |
| depth | integer | |
| multipv | integer |
{
"type": "object",
"$schema": "http://json-schema.org/draft-07/schema#",
"required": [
"fen"
],
"properties": {
"fen": {
"type": "string"
},
"depth": {
"type": "integer",
"maximum": 18,
"minimum": 1
},
"multipv": {
"type": "integer",
"maximum": 5,
"minimum": 1
}
},
"additionalProperties": false
}