v2

latestOpenAPI 3.1.02026-08-075421692.0 MB

Phone Numbers

Purchase phone number

Payment-first: you do not pick a specific number, the system provisions one and auto-assigns it. With usage-based billing active and a payment method on file, the number provisions inline and bills per month on your usage-based invoice (there is no checkout redirect). No payment method on file returns 402 PAYMENT_REQUIRED; a regulated country returns 202 with status: "kyc_required" and a kycUrl.

Requires usage-based billing (the Usage plan). The maximum number of phone numbers is determined by the user's plan.

post/v1/phone-numbers/purchase

Request body

profileIdstring required

Preferred profile for the number. One number = one profile, so when the requested profile already holds a number the API assigns the next free profile instead (or creates one) and returns the actual assignment in profileId on the response.

countrystring

ISO 3166-1 alpha-2 country for the number (default US). International numbers require usage-based billing. Tier 3/4 countries return 202 { status: "kyc_required", kycUrl } — the customer must complete KYC at that URL before the number is ordered. See GET /v1/phone-numbers/countries.

numberType'local' | 'mobile' | 'national' | 'toll_free'

Which of the country's offered number types to order (see types[] on GET /v1/phone-numbers/countries). Omitted = the country's default type, which is always the WhatsApp-safe choice. Capabilities, price, and KYC requirements are per (country, type): toll_free can never connect WhatsApp (400 when combined with connectWhatsapp:true), and wantsSms:true requires an SMS-capable type.

areaCodestring

Area code (national destination code, e.g. 11 for Sao Paulo) the number must be in. Hard constraint: when the area has no deliverable inventory the purchase fails with 409 code AREA_CODE_UNAVAILABLE instead of assigning a number from another area, and later replacements stay in this area too. Omit for any area. Get live options from GET /v1/phone-numbers/availability (areaOptions).

connectWhatsappboolean

A phone number is the unit; WhatsApp is one optional feature. Pass false to buy a STANDALONE number (Calls/SMS only): provisioning skips the Meta pre-verify/OTP steps and the number activates immediately. Omitted defaults to the WhatsApp provisioning path. WhatsApp can be connected to a standalone number later from the connect flow.

wantsSmsboolean

SMS capability is per-number, not per-country. Pass true to provision from the SMS-capable inventory pool so the number can actually text (see also GET /v1/phone-numbers/available with sms=true, and smsAvailable on GET /v1/phone-numbers/countries).

wantsWhatsappboolean

Declare WhatsApp intent on a STANDALONE purchase (connectWhatsapp:false). The number still activates and bills immediately, but if WhatsApp's buy-time check rejects the assigned number, it is automatically swapped for a WhatsApp-eligible one during the purchase instead of being delivered with WhatsApp unavailable. Ignored on the WhatsApp provisioning path (connectWhatsapp omitted or true), which always delivers a WhatsApp-verified number.

purchaseIntentIdstring

Optional idempotency key. Send the same value when retrying a purchase: if a number was already bought under this key, the API returns { status: "already_purchased", numberId, phoneNumber, profileId } instead of provisioning a second number. Generate a fresh key for each genuinely new purchase.

allowMultipleboolean

Any second purchase within 10 minutes of a previous one is rejected with 409 code PURCHASE_VELOCITY as duplicate protection. Pass true to confirm the additional purchase is intentional (e.g. bulk provisioning).

Response

Either a checkout URL (first number) or the provisioned phone number (subsequent numbers).