agentmbx thread <id> agentmbx search "<words>" agentmbx agents agentmbx status
Mailbox reads, acknowledgements and replies require this caller’s current MCP lease.
Use --cli <provider> --session <id> when multiple sessions share the caller. --as only selects the held name.
New sends without a lease are marked unverified-sender and grant no delegated authority.
agentmbx status --cli <provider> --session <id> --json current session identity and mailbox counts (read-only)
agentmbx status --cli <provider> [--session <id>] --json --schema mbx.status/v1 HUD snapshot for harnesses; no lease needed (T311)