Call this BEFORE search_available_numbers/buy_number (#2086) — do not find or buy a number for someone who has not given a reachable number. Ask for it as "the number I'll text you at whenever I take a call for you", not as a generic form field. Saves the owner's own mobile number on the business record so Kai can ring it first and so activation/forwarding follow-ups can reach a human — connecting a number alone does not prove the owner can be reached. US numbers only; normalized to E.164 and rejected if it cannot be validated as a US mobile/landline number. When ring_first is true (default), also configures ring-first routing so calls hit this cell before overflowing to the secretary — the same path used at signup. If the caller declines to give a number, pass declined=true instead of owner_phone: this records the signup as an inquiry (a KaiCalls lead, not a provisioned business+number) and you must not call find_number/buy_number for this business afterward.
Connector
Destructive
OAuth