Zernio
Zernio
API Reference

Branded Calling

List pre-approved call reasonsGETList registered businessesGETList caller identitiesGETList the numbers on a caller identityGETRegister a business for Branded CallingPOSTCreate a caller identityPOSTGet a registered businessGETGet a caller identityGETEdit or resubmit a caller identityPATCHDelete a registered businessDELETEDelete a caller identityDELETEAttach numbers to a verified identityPOSTConfirm the authorizer's codePOSTDetach numbers from an identityDELETEDry-run a caller identity before creating itPOSTResend the authorizer's codePOSTCreate a caller identity share linkPOST
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Branded Calling

List pre-approved call reasons

The carrier catalogue of call reasons that pass vetting automatically. Any other wording is allowed on an identity but is vetted by hand.

GET
/v1/branded-calling/call-reasons

Authorization

bearerAuth
AuthorizationBearer <token>

API key authentication: send your Zernio API key in the Authorization header, prefixed with Bearer.

In: header

Response Body

application/json

application/json

import Zernio from '@zernio/node';const zernio = new Zernio({ apiKey: process.env.ZERNIO_API_KEY });const { data } = await zernio.brandedcalling.listBrandedCallingCallReasons();console.log(data);
{  "callReasons": [    "string"  ]}
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Request the WhatsApp verification code for a number

Starts (or restarts) WhatsApp verification of a Zernio-hosted number: adds it to Meta's pre-verified pool when needed and asks Meta to send the verification code, which Zernio captures on the number itself. Used to connect WhatsApp on a number bought for calls or SMS. `/v1/whatsapp/phone-numbers/{id}/request-code` is a deprecated alias with the same contract. When Meta refuses the number for WhatsApp (Meta error 136021): a number that is already live (`active` or `suspended`) is left untouched and keeps working for calls and SMS, and the call answers 409 `number_not_whatsapp_eligible`; buy a new number with WhatsApp enabled instead. A number that was never live (still verifying) is replaced at no extra cost with a WhatsApp-eligible number on the same record, answered as 200 with `replaced: true`.

List registered businesses

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