ChessPal Chess Engine is a Stockfish-powered chess engine exposed as an MCP server using FastMCP. It calculates the best moves via MCP tools accessible over SSE (default) or stdio transports using an MCP client library. The server implements the Model Context Protocol (MCP) to expose core chess engine capabilities as MCP endpoints. It supports UCI for move generation and provides endpoints such as get_best_move_tool, validate_move_tool, get_legal_moves_tool, and get_game_status_tool. The engine is designed with robust process management, configurable engine binaries, and flexible environment-based configuration. It includes a comprehensive test suite with a Test-Driven Development approach, robust error handling and recovery mechanisms to maintain availability, and support for FEN positions and move history to reproduce and analyze games. Prerequisites include Python 3.10+, Poetry for dependency management, and Stockfish (version 17.1 recommended). It can be run via SSE or stdio transports and is configurable through environment variables (CHESSPAL_ENGINE_*, MCP_HOST/PORT, and logging settings). The project emphasizes integration readiness, testing, and CI/CD with a development workflow and documentation.