ERC-2612 Permit Approvals in Agent Payments: Nonces, Deadlines and Replay Tests
An AI agent may ask a user to approve a token action without first submitting a separate token approval transaction. ERC-2612 defines permit-style signed approvals for compatible ERC-20 tokens. The feature can reduce steps, but an approved allowance is not the same as a completed purchase, and a signature is only as safe as its typed fields, scope and execution rules. This guide defines an audit and testing model.


