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

Get pricing analyticsGET
Dashboard
llms.txtOpenAPI
OverviewPlatformsAPI ReferenceResources
WhatsApp

Create flow

Create a new WhatsApp Flow in DRAFT status. Optionally clone an existing flow. After creating, upload a Flow JSON definition, then publish to make it sendable.

POST
/v1/whatsapp/flows

Authorization

bearerAuth
AuthorizationBearer <token>

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

In: header

Request Body

application/json

TypeScript Definitions

Use the request body type in TypeScript.

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.whatsappflows.createWhatsAppFlow({  body: {    accountId: 'account_abc123',    name: 'Example',    categories: [      'SIGN_UP',    ],  },});console.log(data);
{  "success": true,  "flow": {    "id": "string",    "name": "string",    "status": "string",    "categories": [      "string"    ],    "version": 0,    "lineageId": "string"  }}
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List flows

List all WhatsApp Flows for the Business Account (WABA) associated with the given account.

Get flow

Get details for a specific flow, including status, categories, validation errors, and preview URL.

accountId*string

WhatsApp account ID

name*string

Flow display name

Lengthlength <= 128
categories*array<>

Flow categories

Items1 <= items
cloneFlowId?string

Optional: ID of an existing flow to clone the Flow JSON from

asVersion?boolean

When cloning, true keeps the clone in cloneFlowId's version lineage (auto-numbered next version); false/absent creates an independent flow. Ignored without cloneFlowId.

endpointUri?string

HTTPS-only data exchange endpoint for the flow. Settable only while the flow is in DRAFT, and the flow's uploaded Flow JSON must declare data_api_version "3.0" for the endpoint to be used.

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