An off-chain signed message that grants a token allowance without an on-chain approval transaction, defined by EIP-2612 and similar schemes.
Why it matters
Because no transaction is broadcast, a permit costs nothing and produces no on-chain record at the moment of signing — so it will not appear in a standard approvals review. A signature request that looks harmless can carry the same authority as an approval.
Not advice. Definitions are for understanding, not instruction. Nothing here is financial, legal, tax or security advice.