One-shot: describe the agent you need and get back a quote or a request to confirm custom items

One-shot: describe the agent you need in brief (at least 20 characters) and get back a quote or a request to confirm custom items. locale sets the language of the advisor conversation and any e-mails about this order (default en); it does not change this response's language - REST always speaks English. contactPhone is appended to the brief as a note for volai, not validated. Capped at 5 new setup orders per account per day. If the advisor turn fails (advisor_unavailable, advisor_no_quote), the order was already created and counted against that cap, so retry by finding it with GET /v1/setup-orders and sending the next attempt through POST .../messages, not by calling this endpoint again. No Idempotency-Key: every call creates a new order, the 5-per-day cap is the only brake - retry a timed-out call with GET /v1/setup-orders first.