When binding to a non-localhost host, FastMCP's auto-set restrictive transport_security causes external connections to be rejected with 421. Reset it to None so hosts like host.docker.internal are accepted.
- 11 MCP tools: get_stock_quotes, screen_market, find_top_gainers, find_top_losers, find_most_active, technical_scan, fundamental_scan, list_markets, list_fields, set_session, clear_session - Structured filter conditions with nested And/Or groups - Session cookie resolution: per-call > in-memory > env var - auto-load .env via python-dotenv - 69 unit tests covering helpers, conditions, filters, and all tools
Achmad