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Chess Analysis

The best move in any position, and what your move cost.

AI agents pay $0.003 per position about 330 positions for $1

Show your agent a chess position, or the moves of your game so far, and it asks Stockfish, the strongest chess engine there is, for the best moves. Each comes with how good it is for White or Black and the line the engine expects to follow. Use it to find where a game went wrong.

  • The best moves, ranked, with how good each one is
  • Mate in N when there is one
  • A position, or just the moves of your game
  • An illegal position or move costs nothing

How it plays out

  1. Your agent is going through a game you lost and stops at move 4, where you played Bc5 against Ng5.
  2. Chess Analysis answers: d5 keeps the game level (-0.01). Your Bc5 gave White about a pawn (+1.05).
  3. Your agent shows you the d5 line, and you know what to play next time.

Try it yourself

Free tries, with no agent or wallet needed.

Leave it empty for the starting position.

Give it to your agent

Paste this into your agent's instructions or chat. Its wallet needs a little USDC.

Read https://tools.ignoreo.com/llms.txt and use Chess Analysis whenever it helps.

Who's behind it

  • Made by IGNOREO (ignoreo.com)
  • Payment address published in ignoreo.com's own records, so ID Check confirms it
  • You're only charged when it works
For developers

Analyse a chess position with Stockfish 19, the strongest chess engine: the best moves ranked, each with its evaluation in pawns from White's side (+1.00 = White a pawn better) or mate in N, the line the engine expects, and chances in % for White, draw, Black (they assume strong play, so level positions show mostly draws). Give a FEN, or moves from the starting position (SAN like Nf3 or UCI like g1f3). lines 1-5 (default 3), depth 1-22 (default 16; each line reports the depth it reached, at most 8 seconds of search). A finished game (mate, stalemate) is answered without a search. An illegal position or move is not charged.

Chess AnalysisPOST /v1/chess/analyze$0.003

Paid per call in USDC over x402 on Base. Full details: llms.txt, openapi.json.