alpaca-mcp-server

Why we included this project

For anyone who keeps an Alpaca account and wants a language model to actually do something with it, this is the official bridge between your LLM tools and the brokerage API. Balances, positions, portfolio history, and market data all show up as callable tools, and so does order placement across stocks, options, and crypto, which means Claude, Cursor, or any MCP-compatible client can manage trades from a plain-English request. Version 2 is a full rewrite on FastMCP and OpenAPI, so the tool schemas match the real API rather than a hand-rolled approximation, and the ALPACA_TOOLSETS setting lets you strip out order execution entirely if you only want a research assistant. Paper trading keys are enough to run the whole thing risk-free, making it a low-stakes way to prototype an AI-assisted trading workflow before real money enters the picture.