Documentation
1. Data Providers Overview
- Created
- Jun 5, 2026
- Updated
- Jun 5, 2026
Every chart is backed by a data provider that supplies bars, ticker metadata, and realtime updates. Fractal Chart ships two providers, chosen automatically by the kind of symbol you open.
The two providers
| Provider | Covers | API key |
|---|---|---|
| Massive | Equities and other instruments, plus corporate-action data (news, earnings, dividends, splits) | Required |
| Binance | Crypto spot pairs (e.g. BTCUSDT, ETHUSDT) via public Spot endpoints | Not required |
Massive is the default provider. Crypto pairs resolve to Binance automatically, and equities resolve to Massive.
What a provider supplies
- Bars — the OHLCV candles for each timeframe.
- Ticker resolution — turning what you type into a canonical symbol on the right provider.
- Metadata — instrument overview details.
- Corporate actions (Massive) — the news, earnings, dividend, and split feeds behind the Event & Session Overlays.
- Realtime streams — live bar updates (see Realtime vs Delayed Data).
Choosing where requests run
Provider requests can run two ways — directly from the browser (Frontend mode) or through the app's own API routes (Backend mode). This and API-key setup are covered next.
Next steps
Set up keys and choose how data is fetched.