Automate TradingView alerts on Tastytrade

How the connection works

Tastytrade uses OAuth. You register an API application with Tastytrade, enter its client ID and secret in Webhook Setup, then approve access on Tastytrade's site. StockAutoTrader stores the resulting tokens and refreshes them automatically when they expire.

Connections can be marked as sandbox, which sends orders to Tastytrade's certification environment. Use it for your first alerts.

Setup, step by step

1. Start a trial from pricing and sign in.
2. In Tastytrade's developer settings, create an OAuth application. Set its redirect URI to the one shown in Webhook Setup.
3. In Webhook Setup, choose Tastytrade, enter the client ID and secret, and click connect. Approve access on Tastytrade.
4. Create a bot: choose Tastytrade, the ticker, a max dollar amount, and optional default quantities.
5. Copy the Buy Signal URL and Sell Signal URL.
6. Create one TradingView alert per side, enable Webhook URL, and paste the matching URL.
7. Use the example message below. On Tastytrade, always send a price (see why below).
8. Check the first fills in the bot's trade history before moving off sandbox.

Example alert message

The engine does not fetch a Tastytrade quote on its own, so include the bar close as price. Without a price it can only size from an explicit quantity combined with max_amount.

{
  "price": {{close}},
  "quantity": 5,
  "signal_id": "qqq-buy-{{timenow}}"
}

A sell 0.3% above the close as a limit order, with the share count taken from the bot default:

{
  "price": {{close}},
  "default_sell_percent": 0.3
}

What is supported on Tastytrade

Fields the bot reads

How quantity is decided

1. quantity from the alert, if present.
2. Otherwise the bot default buy or sell quantity.
3. Otherwise max_amount divided by price (whole shares for stocks, up to 8 decimals for crypto).
4. If no price was sent, the engine asks the broker for a quote where it can (Tradier and Coinbase).
5. The order is rejected if the result is zero, above 10,000 units, or more than 1% over the dollar cap.

Things to know before going live

• If Tastytrade rejects an order (buying power, market hours, symbol), the rejection message is stored with the trade so you can see why.
• If your OAuth approval is revoked, orders fail until you reconnect. Expired access tokens are refreshed automatically.
• Automatic cancel of stale limit orders is available for Tradier and Coinbase bots, not Tastytrade.

Automated trading can lose money. Not investment advice. A webhook runs whatever your alert says, including a bad alert. Test in a sandbox or at small size first, and watch the audit trail.