Stockfish Chess MCP server

This is a small helper that connects your AI assistant to Stockfish, a well known chess engine. You describe a chess position in words or in chess notation, and the AI passes it to Stockfish to get a strong move suggestion. It is handy for chess players who want quick analysis without learning engine commands.

What this MCP server does

You tell your AI something like 'what is the best move here' and give the position. The AI sends that request to this helper, which starts or reuses a Stockfish session. The helper passes the position and the thinking time or depth to Stockfish. Stockfish calculates and returns its suggested move and analysis. The helper sends that back, and your AI shows it to you in the chat.

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What you can do with it

• Ask for the best move in a position you describe
• Set up a board from the starting position or from a FEN string
• Tell Stockfish how long to think, in milliseconds
• Tell Stockfish how deep to search, in plies
• Run several chess analyses at the same time in separate sessions
• Stop a search that is taking too long
• Close a session when you are done

Try asking your AI

• “Set up the starting position and tell me the best first move.”
• “Here is a position in FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1. What is the best move if Stockfish thinks for one second?”
• “Search this position to depth 10 and show me the suggested move.”
• “Stop the current Stockfish search, I want to change the position.”

What it gives back to you

You get back the engine's answer as text in the chat, usually the suggested move and sometimes extra lines from Stockfish. The helper also reports whether the request succeeded and which session was used. If something goes wrong, you see a short error message instead.

Before you start

Who it's for

Chess players, coaches, and anyone who wants quick engine analysis without learning chess engine commands.