Polygon.io
Real-time and historical stock, options, forex, and crypto market data with WebSocket streaming support.
Status
🟡 Unknown
🟡 Unknown
30-day uptime
collecting…
collecting…
Free tier
Unlimited delayed data, free key, no credit card
Unlimited delayed data, free key, no credit card
Auth
API key
API key
Free alternatives (live ranking)
- Frankfurter — 🟡 Unknown · Unlimited, no key, no credit card
- European Central Bank Rates — 🟡 Unknown · Unlimited, no key, no credit card
- Alpha Vantage — 🟡 Unknown · 25 calls/day, free key, no credit card
Paid alternatives
- Polygon Starter — from $29/mo