Keep humans at the irreversible boundary.
Agents remain autonomous until charter determines that an action carries too much financial, operational, regulatory or security impact to proceed automatically. Then Xybern pauses for a person.
Low-stakes work runs untouched. High-stakes actions stop at the risk boundary and wait for a human decision.
An escalation reaches a person with the action, the verdict and the reasoning attached, so the decision is informed.
The human decision, and who made it, is sealed to the vault alongside the action.
Put one workflow behind Xybern and watch every agent action authorised, and sealed to the vault.