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Play chess with a person or an AI agent through registered WebMCP tools.

First seen 2026-11-05 · Last seen 2026-11-05 · Source: webmcp.com

Answer 1 · Act 7 · Transact 0 · Score: Not yet scored

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chess-evaluate-move

act imperative

Asks Stockfish how good a move was: the evaluation before and after it, how much it gave away in centipawns, a blunder/mistake/good classification, the move the engine preferred, and the line that refutes it. Called with no arguments it reviews the move just played, which is the usual way to coach after a human moves. Use the refutation line to explain the mistake in words rather than only quoting the number.

Input schema

Property	Type	Required	Description
`from`	string	no	Source square, e.g. "e2".
`to`	string	no	Destination square, e.g. "e4".
`promotion`	string	no	Promotion piece, if the move is a promotion.
`san`	string	no	The move in algebraic notation, e.g. "Nf3". An alternative to from/to.
`fen`	string	no	The position the move is played from. Defaults to the current position, or to the position before the last move when reviewing it.
`depth`	number	no	Search depth, 4-22. Defaults to 14.

Raw JSON schema

{
  "type": "object",
  "properties": {
    "from": {
      "type": "string",
      "description": "Source square, e.g. \"e2\"."
    },
    "to": {
      "type": "string",
      "description": "Destination square, e.g. \"e4\"."
    },
    "promotion": {
      "type": "string",
      "enum": [
        "q",
        "r",
        "b",
        "n"
      ],
      "description": "Promotion piece, if the move is a promotion."
    },
    "san": {
      "type": "string",
      "description": "The move in algebraic notation, e.g. \"Nf3\". An alternative to from/to."
    },
    "fen": {
      "type": "string",
      "description": "The position the move is played from. Defaults to the current position, or to the position before the last move when reviewing it."
    },
    "depth": {
      "type": "number",
      "description": "Search depth, 4-22. Defaults to 14."
    }
  },
  "required": []
}

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