{"id":"polygon-api","name":"Polygon.io API","af_score":79.3,"security_score":null,"reliability_score":null,"what_it_does":"Financial market data platform providing real-time and historical stock, options, forex, and crypto data via REST and WebSocket APIs with comprehensive coverage of US markets.","best_when":"An agent needs comprehensive US financial market data - stocks, options, crypto - for analysis or algorithmic trading signals.","avoid_when":"You need order execution (use Alpaca) or primarily need international market data.","last_evaluated":"2026-03-01T09:50:06.086903+00:00"}