Grantline Wants AI Agents to Carry Their Permission Slips

Field notes

Grantline describes a mandate that travels with an agent's request rather than leaving authorization behind in a session or API credential. Its proposed verifier checks signature, revocation, and request constraints before returning an allow or deny, while settlement events enter a hash-chained ledger. The page names nine constraint types and gives examples including merchant lists, geography, velocity, approval thresholds, and single-use mandates. It also presents conditional escrow and human approval routing as parts of the same control layer.