Send LemonSqueezy subscription alerts to Slack, Discord, Telegram and log them in Google Sheets

Quick overview Get an alert in Slack, Discord or Telegram within seconds every time a LemonSqueezy subscription is created, cancelled, expires or a payment fails, plus a running log of every event in Google Sheets. How it works Receives a POST webhook from LemonSqueezy with the raw request body. Computes an HMAC signature for the raw body and compares it to LemonSqueezy’s x-signature header, stopping if they don’t match. Parses the webhook JSON and extracts the event name from the headers or payload metadata. Normalizes subscription and payment payloads into flat fields like customer email, product, plan, status, amount, and currency. Appends the normalized event to Google Sheets as an event log. If the event is not subscription_updated, sends an alert message to Slack, Discord, and/or Telegram with the key event details. Setup In LemonSqueezy, create a webhook pointing to this workflow’s Production webhook URL and set a signing secret. Configure the Crypto credential/secret used for the HMAC calculation so it matches your LemonSqueezy webhook signing secret exactly. Set up at least one alert destination: connect Slack OAuth and choose a channel, or provide a Discord webhook URL, o