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 identityDELETEResend the authorizer's codePOST
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Branded Calling

Resend the authorizer's code

Emails the authorizer a fresh 6-digit code (the previous one stops working). Only while the identity is pending_email_verification.

POST
/v1/branded-calling/identities/{id}/verify-email

Authorization

bearerAuth
AuthorizationBearer <token>

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

In: header

Path Parameters

id*string

Response Body

application/json

application/json

application/json

import Zernio from '@zernio/node';const zernio = new Zernio({ apiKey: process.env.ZERNIO_API_KEY });const { data } = await zernio.brandedcalling.resendBrandedCallingAuthorizerCode({  path: {    id: 'abc123',  },});console.log(data);
{  "status": "sent"}
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Detach numbers from an identity

Deregisters the numbers at the carrier and frees them for another identity. Up to 100 per call.

List all calls (unified history)

Unified call history across ALL of your numbers: both channels (WhatsApp Business Calling + regular phone/PSTN), inbound and outbound, newest first. Unlike `GET /v1/voice/calls` (PSTN-only) and `GET /v1/whatsapp/calls` (one account at a time), this endpoint needs no `accountId` and never requires fanning out one request per number. Any row can be opened channel-agnostically via `GET /v1/calls/{id}` and `GET /v1/calls/{id}/recording`; no branching on `channel` needed. When the counterparty number matches a CRM contact, `contactId` and `contactName` are set. Cursor pagination: pass the returned `nextCursor` as `before` to fetch the next page. `nextCursor` is null on the last page.