To monitor transfers of a particular ERC-20 token involving a wallet, create an EVM Stream for the token contract and enable contract logs. Configure the token's Transfer(address,address,uint256) event with the correct ABI. The standard ERC-20 Transfer event has indexed from and to addresses and a non-indexed amount.
Use Advanced Options to filter the event's from field for tokens sent by the wallet or its to field for tokens received. If you need both directions, configure a filter that includes either match. Test the filter with a known transfer before relying on webhook deliveries.
Some tokens use non-standard events or ABI definitions, so confirm the contract's actual Transfer event if expected transfers do not appear. See the current Stream quickstart for setup and webhook verification.