Polymarket Yes/No arbitrage alert (Telegram)

Config

• Market slug (required): The Polymarket market slug. Used to fetch the market and both Yes and No order books.
• Telegram (chat ID) (required): Telegram credential. The arbitrage alert is sent to this chat when the condition is met.

Logic

1. The workflow loads the market and the Yes and No order books for the given slug.
2. It reads the best (lowest) ask price for the Yes token and the best ask for the No token.
3. It checks whether Yes ask + No ask < 1. In a binary market this can indicate a mispricing: buying both outcomes would cost less than $1 per share, implying a locked-in profit if both are filled.
4. If the condition is met and Telegram is configured, it sends one message with the market question and the three prices (Yes ask, No ask, sum).
5. It then finishes and reports success, the prices, and whether an arbitrage was detected.

When it stops: After a single run.

If something fails: If the order book is empty or the API fails, the workflow reports failure and does not send a notification.