Zernio
Zernio
API Reference

Connect

General

Get OAuth connect URLGETComplete OAuth callbackPOSTGet pending OAuth dataGETConnect ads for a platformGET

Facebook

List Facebook pagesGETSelect Facebook pagePOSTList Facebook pagesGETUpdate Facebook pagePUT

Google Business

List Google Business Profile locationsGETSelect Google Business Profile locationPOSTAssign Google Business Profile location to another profilePOSTList Google Business Profile locationsGETUpdate Google Business Profile locationPUT

Instagram

List Pages with a linked Instagram accountGETSelect the Page whose Instagram account to connectPOST

LinkedIn

List LinkedIn orgsGETSelect LinkedIn orgPOSTList LinkedIn orgsGETSwitch LinkedIn account typePUT

Pinterest

List Pinterest boardsGETSelect Pinterest boardPOSTList Pinterest boardsGETCreate Pinterest boardPOSTSet default Pinterest boardPUT

Reddit

List Reddit subredditsGETList subreddit flairsGETGet subreddit rulesGETSet Reddit post flairPOSTVote on a Reddit post or commentPOSTSet default subredditPUT

Bluesky

Connect Bluesky accountPOST

Discord

Connect a Discord channelPOST

Slack

Connect a Slack channelPOST

Telegram

Generate Telegram codeGETConnect Telegram directlyPOSTCheck Telegram statusPATCH

Snapchat

List Snapchat profilesGETSelect Snapchat profilePOST

TikTok

Set TikTok brand identityPATCH

OpenAI Ads

Connect an OpenAI Ads accountPOST

WhatsApp

Connect WhatsApp via credentialsPOSTConnect WhatsApp from Embedded SignupPOSTGet Embedded Signup SDK configGETList numbers for selectionGETComplete number selectionPOST

YouTube

List YouTube playlistsGETSet default YouTube playlistPUTGet a YouTube video transcriptGET

Shopify

Get Shopify OAuth connect URLGETConnect a Shopify store with a custom-app Admin tokenPOST

Other

List Slack channels for the channel pickerGET
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Connect

Get Embedded Signup SDK config

The Meta app id and Embedded Signup configuration id the Zernio-hosted signup page uses to open Meta's popup. Integrators do not need this endpoint: start the hosted flow with GET /v1/connect/whatsapp?signup=hosted and send the user to the returned authUrl. Authenticates with an API key or with the connect token the hosted flow issues (X-Connect-Token header).

GET
/v1/connect/whatsapp/sdk-config

Authorization

bearerAuth
AuthorizationBearer <token>

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

In: header

Header Parameters

X-Connect-Token?string

Connect token issued by the hosted signup flow, accepted instead of an API key.

Response Body

application/json

application/json

{  "appId": "string",  "configId": "string"}
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Connect WhatsApp from Embedded Signup

Exchange the authorization code Meta's Embedded Signup popup returned. This is the call the Zernio-hosted signup page makes after the popup closes (`GET /v1/connect/whatsapp?signup=hosted`), sending the `wabaId` and `phoneNumberId` Meta reported so exactly the chosen number is connected; when both are omitted the first number the token can see is used. The code never passes through a `redirect_uri`, so `POST /v1/connect/{platform}` cannot accept it. Authenticates with an API key, or with the connect token the hosted flow issues (`X-Connect-Token` header).

List numbers for selection

Fetch the WhatsApp phone numbers available across the user's WhatsApp Business Accounts (WABAs) after a headless OAuth flow. WhatsApp OAuth grants access at the WABA level. When a connected WABA has 2 or more phone numbers, you must call this endpoint to list them and then `POST /v1/connect/whatsapp/select-phone-number` to bind one to the Zernio profile. Single-phone WABAs auto-complete during the OAuth callback and never reach this endpoint. Use the `profileId` and `tempToken` returned in the headless redirect (`step=select_phone_number`). Alternative: if you already know `wabaId` and `phoneNumberId` (e.g. from Meta Business Suite), use `connectWhatsAppCredentials` instead, which skips this two-step flow.