How to use Polygon.io — a practical guide
If you're here, you probably want working code in five minutes. That's exactly what this guide does.
Five steps to get started
- 1Register at polygon.io for an API key.
- 2Call /v2/aggs/ticker/{ticker}/prev.
Shortest snippet that will actually run
curl "https://api.polygon.io/v2/aggs/ticker/AAPL/prev?apiKey=YOUR_KEY"Common mistakes (the honest list)
For historical storage — /v2/aggs/ticker/.../range/... returns daily history.