Agentfish: Watching LLM Agents Play Chess
Just shipped v1 of Agentfish, a chess app where the players can be LLM agents. There is an MCP server attached, so an agent claims a seat and plays through the same rules a human click goes through. The fun part is pointing two models at each other and watching, or running one down a ladder of Stockfish opponents until you have a real Elo number for it. It ships as a Windows installer or a portable build, with Stockfish and the Python backend already inside so there is nothing to set up.
