This app runs on Railway, checks Ethereum gas price every hour using the Etherscan API, and sends email via Resend if the price crosses your pre-defined threshold. Set up the following environment variables before deploying the service:
ETHERSCAN_API_KEY: Etherscan API key to check Ethereum gas price; get it here.RESEND_API_KEY: Resend API key to send email notifications; get it here.EMAIL_FROM: Email address to send alert from, as configured in Resend.EMAIL_TO: Email address to send alert to, as configured in Resend.PRICE_THRESHOLD: Send email if Ethereum gas price drops below this threshold (gwei).
To deploy on Railway using a one-click template, click the button below. The template does not allow cron schedule to be defined, so set up the hourly run (0 * * * *) in the service settings once it's deployed.
