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

Commerce

List the catalogs linked to a WhatsApp numberGETLink a catalog to a WhatsApp numberPOSTUnlink a catalog from a WhatsApp numberDELETEGet a number's commerce settingsGETUpdate a number's commerce settingsPUT

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

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

Clear ice breakers and commandsDELETEGet ice breakers and commandsGETGet pricing analyticsGETSet ice breakers and commandsPOST
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WhatsApp

Get Flows encryption key status

Read the RSA business public key registered on the phone number for WhatsApp Flows endpoint encryption. Only one key is active per phone number at a time. Flows that use flow_action: data_exchange (an endpoint-backed flow) stop working at runtime until the endpoint serves the matching private key, and Meta rejects publish with error code 139002 ("Missing Flows Signed Public Key") when no key is registered. registered reflects whether a key is present, never signatureStatus alone: Meta reports an unregistered key as MISMATCH rather than a null/absent value.

GET
/v1/whatsapp/flows/encryption-key

Authorization

bearerAuth
AuthorizationBearer <token>

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

In: header

Query Parameters

accountId*string

WhatsApp account ID

Response Body

application/json

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.whatsappflows.getWhatsAppFlowsEncryptionKey({  query: {    accountId: 'account_abc123',  },});console.log(data);
{  "publicKey": "string",  "signatureStatus": "VALID",  "registered": true}
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List flow responses

List the responses customers submitted when completing a flow (parsed from the nfm_reply messages received via webhook), newest first. Scope to a single flow with `flowId`, which matches responses whose flow_token carries the `<flowId>:` prefix that Zernio stamps on auto-generated tokens at send time. Responses sent with a custom integrator-supplied flow_token are not attributed to a flow.

Register a Flows encryption key

Register (or replace) the RSA business public key for WhatsApp Flows endpoint encryption on the phone number. Uploading a new key replaces the previous one: only one key is active per phone number. The corresponding private key must be served by the flow's endpoint, or endpoint-backed flows (flow_action: data_exchange) will fail at runtime even though the key is registered.