[!IMPORTANT] :test_tube: This project is experimental and could be subject to breaking changes.

Massive.com MCP Server

A Model Context Protocol (MCP) server that provides access to the full Massive.com financial data API through an LLM-friendly interface.

Rather than exposing one tool per endpoint, this server gives the LLM four composable tools — search, docs, call, and query — that cover the entire Massive.com API surface. Data can be stored in-memory as DataFrames, queried with SQL, and enriched with built-in financial functions.

Tools

| Tool | Description | |---|---| | search_endpoints | Search for API endpoints and built-in functions by natural language query. Returns names, URL patterns, and descriptions. Supports scoping to endpoints, functions, or all. | | get_endpoint_docs | Get parameter documentation for a specific endpoint. Pass the docs URL from search_endpoints results. | | call_api | Call any Massive.com REST API endpoint. Supports storing results as an in-memory DataFrame () and applying post-processing functions (). Paginated responses include a next-page hint. | | | Run SQL against stored DataFrames using SQLite. Supports , , , CTEs, window functions, and more. Results can also be post-processed with . |