Authority that only exists when it should.
Grant authority that is valid only within a defined time window, so permissions exist when the work happens and disappear when it does not.
Bind an agent's authority to a schedule or window, so it cannot act outside the times you intend.
Delegated and session authority can expire with the task, the session or a fixed window, narrowing the blast radius over time.
The window is checked at the intercept, so an out-of-window action is blocked, not merely flagged.
Related capabilities on the same authorisation layer. Every one is enforced before an action runs and sealed to the Provenance Vault.
Put one workflow behind Xybern and watch every agent action authorised, and sealed to the vault.