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Troubleshooting

If Finny isn't working, start here.

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Python + yfinance required for backtesting

If Finny is not working — especially backtesting — make sure you have Python 3 and yfinance installed on your system:

bash

pip install yfinance

Finny shells out to Python for data fetching and backtest execution. Without these dependencies, commands like /backtest will fail.

Common issues

"Command not found: finny"

Re-run curl -fsSL https://finnyai.tech/cli/install | bash and open a new shell so ~/.finny/bin is on your PATH. Or install via npm i -g finny.

"API key not set"

Run /init inside the Finny CLI to configure your API key and provider.

Backtest returns no data

Verify the ticker symbol is valid and that yfinance can fetch data for it. Some delisted or very new tickers may not have historical data available.

Broker connection fails after install

Reset the managed Python env from /settings → Paper Trading. The first run after a reset takes 30–60s to reinstall alpaca-py / ccxt.