Data
Data providers
You choose where the bars for each backtest and forward test come from.
Chosen, never swapped
Providers
| Provider | Key | Notes |
|---|---|---|
| Yahoo Finance | None (the default) | Free. Intraday history is limited. |
| Polygon | Your own API key | Your plan with Polygon sets the limits. |
| Finnhub | Your own API key | Your plan with Finnhub sets the limits. |
| Alpha Vantage | Your own API key | Your plan with Alpha Vantage sets the limits. |
Add a key in Settings → API Keys. Keys are encrypted at rest and never sent back to your browser. When you use your own key, you are that provider’s customer and its terms apply.
Yahoo Finance history
Yahoo serves intraday bars for a limited window back from today:
| 1 minute | about 7 days |
| 5 and 15 minutes | about 58 days |
| 1 and 4 hours | about 2 years |
| 1 day and 1 week | the full history |
For a longer intraday backtest, use a provider with your own key.
The Data Source block
The Data Source block on your canvas sets the bot’s timeframe and history depth. It does not decide where a backtest’s bars come from: you pick that in the backtest panel, or when you start a forward test.
Data quality
Every provider’s data can be delayed, incomplete, adjusted or wrong, and two providers can give different results for the same bot. Argix does not vouch for the data any provider supplies.