ERC-7702 delegation

ERC-7702 lets an EOA sign an authorisation pointing at a contract's code, after which transactions from that account execute with that code's logic. Batching, sponsored gas and scoped permissions become available without migrating to a new address — the account keeps its history, balances and approvals.

For agent work it narrows the gap between the two account models. A key that was only ever able to sign one transfer at a time can be given, temporarily, the permission structure a smart account has.

It also concentrates risk: whatever code an account delegates to acts with the account's full authority, so the authorisation itself is the thing to scrutinise. Delegation is a capability, never a safeguard.