Limits, statuses, and evidence

Item	Current behavior
Existing concierge identity JWT	HS256; `exp` at most five minutes after `iat`; deployment ID and audience bound
Concierge hook request	15-second receive timeout; one final transcript per turn
Deferred concierge reply	One complete text answer within two minutes of acknowledgement
Concierge transcript	At most 16,000 UTF-8 bytes in a hook request
Concierge reply	Nonempty, at most 16,000 UTF-8 bytes
Browser playback events	WebSocket start/drain observations; WebRTC fallback may lack per-turn signals
Flow-based agent	Alpha; test each node, tool error, and branch for the intended workflow
Human phone transfer	A flow handoff message is not an established live bridge

Do not infer a universal STT, model, TTS, or language limit from this page. Those depend on the selected provider, account, and deployment configuration. The dashboard exposes provider options for the account; verify the chosen combination and its costs before launch. For capability maturity see Capabilities. For exact concierge fields and status codes see Existing concierge contract.

Existing concierge voice

Platform and SDK

HTTP endpoints

Limits, statuses, and evidence