DataFree tier

Massive (Polygon.io) MCP Server

Official MCP server for Massive market data, formerly Polygon.io

By Massive

Massive (Polygon.io) MCP Server is not open source, so there are no GitHub metrics to track. We list it for completeness and describe only what can be verified from public documentation.

What it is

Polygon.io rebranded to Massive; this is the company's official MCP server, giving assistants access to aggregates, trades, quotes, reference data and news for US stocks, options, FX and crypto. Requires an API key; a free tier exists with delayed data.

What it is

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