Massive Financial Connector

Use Massive/Polygon as the primary market-data source.

Required environment

• Require MASSIVE_API_KEY in local environment.
• Never print, commit, or upload API keys.
• Accept both quoted and unquoted local env values.
• If auth fails with Unknown API Key, verify local shell env and active key status in Massive dashboard.

Full capability mode (official MCP server)

Start the official Massive MCP server (all features from mcp_massive):

scripts/start-mcp-server.sh