Identity
Every agent has an id that begins withag_. The id is permanent. Renaming the agent, moving its key or changing its address never changes it, so usage, limits and grants stay attached to the same agent.
Addresses
In Bud, an agent’s address is an attribute of the agent, not its identity. An address is<address>@<workspace mail domain>, and POST /v1/me.describe returns it in full. See Agents and addresses.
Deletion
Deleting an agent revokes its keys and stops it acting. Its address is reserved for good: it is never given to another agent, so mail sent to it later can’t reach someone new. Asking for a reserved address is refused.Credentials
An agent acts through akeya_ key or a client key. See Credentials.

