Zernio
Zernio
API Reference

WhatsApp

Templates

List templatesGETCreate templatePOSTGet templateGETUpdate templatePATCHDelete templateDELETEGet template by idGETUpdate template by idPATCHDelete template by idDELETELook up a library templateGET

Business Profile

Get business profileGETUpdate business profilePOSTUpload profile picturePOSTGet display name statusGETRequest display name changePOSTGet business usernameGETGet username suggestionsGETSet business usernamePOSTDelete business usernameDELETE

Groups

List active groupsGETCreate groupPOSTGet group infoGETUpdate group settingsPOSTDelete groupDELETEAdd participantsPOSTRemove participantsDELETECreate invite linkPOSTList join requestsGETApprove join requestsPOSTReject join requestsDELETE

Blocking

Check if a user is blockedGETList blocked usersGETBlock usersPOSTUnblock usersDELETE

Media

Download WhatsApp mediaGET

Conversions

Get CTWA conversions datasetGETProvision CTWA datasetPOSTList conversion eventsGETSend WhatsApp conversion eventPOST

Account Events

List account notificationsGET

Phone Numbers

Get number statusGETRegister a connected WhatsApp number on the Cloud APIPOSTMove a number to another profilePATCH

Calling

Get calling config for an accountGETEnable calling on a numberPOSTUpdate calling configPATCHDisable calling on a numberDELETECheck call permissionGETList call history for an accountGETInitiate outbound callPOSTGet a single callGETEstimate per-minute costGETGet calling config for a numberGETGet a call recordingGETStart caller-ID verification for a customer-brought numberPOSTConfirm the caller-ID verification codePOST

Flows

List flowsGETCreate flowPOSTGet flowGETUpdate flowPATCHDelete flowDELETEGet flow JSON assetGETUpload flow JSONPUTGet flow preview URLGETList flow versionsGETPublish flowPOSTDeprecate flowPOSTSend flow messagePOSTList flow responsesGETGet Flows encryption key statusGETRegister a Flows encryption keyPOST

Sandbox

List your sandbox sessionsGETStart a sandbox activationPOSTRevoke a sandbox sessionDELETE

Other

Request a Meta re-verification code for a BYO WhatsApp numberPOSTVerify the Meta re-verification code for a BYO WhatsApp numberPOST
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WhatsApp

Request a Meta re-verification code for a BYO WhatsApp number

For a bring-your-own WhatsApp number (its own WABA, migrated off another BSP) that Meta demoted to re-verification, this requests a new OTP from Meta. The code lands on the customer's own handset, so verifying it is necessarily self-service; call POST /v1/accounts/{accountId}/whatsapp/verify-code with the code once it arrives. Rate-limited to one request per 10 minutes per account, and Meta enforces its own cooldown on top of that.

POST
/v1/accounts/{accountId}/whatsapp/request-code

Authorization

bearerAuth
AuthorizationBearer <token>

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

In: header

Path Parameters

accountId*string

The WhatsApp account ID

Request Body

application/json

TypeScript Definitions

Use the request body type in TypeScript.

Response Body

application/json

application/json

application/json

application/json

application/json

application/json

{  "requested": true,  "alreadyActive": true,  "method": "string",  "accountId": "string",  "phoneNumberId": "string"}
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Revoke a sandbox session

Hard-deletes the session. The user loses the ability to send to that phone via the sandbox until they re-activate it. Existing conversations and messages already exchanged with that phone are untouched. Revocation only blocks FUTURE sends. Sessions belonging to other users cannot be revoked; the response is the same 400 as "session not found" so existence isn't leaked.

Verify the Meta re-verification code for a BYO WhatsApp number

Submits the OTP Meta sent in response to POST /v1/accounts/{accountId}/whatsapp/request-code. This only verifies the number with Meta; it does not register it on the Cloud API. Call POST /v1/accounts/{accountId}/whatsapp/register afterward to complete activation.

method?string
Default"SMS"

Value in

  • "SMS"
  • "VOICE"
language?string

Meta locale code for the verification message, e.g. en_US.

Default"en_US"