MCP Polygon

MCP Polygon is an experimental Model Context Protocol (MCP) server that provides LLM-friendly, composable access to the full financial data API of Massive.com. It exposes the entire API via three core tools—search_endpoints, call_api, and query_data—enabling powerful natural-language-driven data access, post-processing, and SQL analytics on a wide array of real-time and historical market data, from stocks and options to crypto and financial fundamentals. It's best suited for developers, data scientists, and AI system integrators building finance-focused LLM applications or expanding financial data access through autonomous agents or chat interfaces.