Monitor high-value USDT transfers on Ethereum with Airtable and Slack alerts

Smart Contract Event Monitor (Web3)

This workflow automatically monitors the Ethereum blockchain, extracts USDT transfer events, filters large-value transactions, stores them in Airtable and sends a clean daily summary alert to Slack.

This workflow checks the latest Ethereum block every day and identifies high-value USDT transfers. It fetches on-chain logs using Alchemy, extracts sender/receiver/value details, filters transactions above a threshold, stores them in Airtable and finally sends a single clear summary alert to Slack.

You receive:

Daily blockchain check (automated) Airtable tracking of all high-value USDT transfers A Slack alert summarizing the count + the largest transfer

Ideal for teams wanting simple, automated visibility of suspicious or large crypto movements without manually scanning the blockchain.

Quick Start – Implementation Steps

1. Add your Alchemy Ethereum Mainnet API URL in both HTTP nodes. 2. Connect and configure your Airtable base & table. 3. Connect your Slack credentials and set the channel for alerts. 4. Adjust the value threshold in the IF node (default: 1,000,000,000). 5. Activate the workflow — daily monitoring begins instantly.