Etherspot explains: EIP-7906
EIP-7906 adds a post-execution assertion mechanism to EIP-8141 Frame Transactions.
EIP-8141 introduces a native account abstraction transaction model for Ethereum. EIP-7906 extends that model with a new POST_TX frame that runs after the main transaction execution.
The idea is simple: instead of only checking whether a transaction is allowed before it runs, an account can also check what actually happened after execution.
New opcodes let the POST_TX frame inspect the transaction's state changes, including balance changes, storage changes, newly deployed contracts, emitted events, and more.
This makes it possible to define conditions around the expected outcome of a transaction. For example, an account could require that a certain balance doesnโt decrease by more than an approved amount.
If the result doesn't match the defined conditions, the transaction's execution can be reverted.
In simple terms, EIP-7906 lets an account say: โRun this transaction, but only keep the result if it stays within the rules I approved.โ