Zernio
Zernio
API Reference

Campaigns and Ads

Overview

Get campaign treeGETGet daily account metricsGET

Campaigns

List campaignsGETCreate a standalone campaignPOSTGet live campaign detailsGETUpdate a campaignPUTDuplicate a campaignPOSTDelete a campaignDELETEPause or resume a campaignPUTPause or resume many campaignsPOSTList campaign assetsGETAttach campaign assetsPOSTUpdate campaign assetsPUTRemove campaign assetsDELETERead a Google campaign's device, location, and language targetingGETEdit a Google campaign's device, location, or language targetingPUTRead a campaign's ad schedule (dayparting)GETReplace a campaign's ad schedule (dayparting)PUTGet campaign conversion goalsGETUpdate campaign conversion goalsPATCH

Asset Groups

List Performance Max asset groupsGETCreate a Performance Max asset groupPOSTGet a Performance Max asset groupGETUpdate a Performance Max asset groupPATCHRemove a Performance Max asset groupDELETELink or unlink asset group assetsPOSTReplace an asset group's listing-group treePUT

Ad Sets

List ad setsGETCreate a standalone ad groupPOSTGet live ad-set detailsGETUpdate an ad setPUTDuplicate an ad setPOSTDelete an ad setDELETEPause or resume a single ad setPUTList ad-group assetsGETAttach ad-group assetsPOSTUpdate ad-group assetsPUTRemove ad-group assetsDELETE

Ads

List adsGETGet ad detailsGETCreate standalone adPOSTBoost post as adPOSTUpdate adPUTDuplicate an adPOSTCancel an adDELETEPause or resume a single adPUT

Keywords

List Search keywordsGETAdd Search ad-group keywordsPOSTPause or enable a Search keywordPATCHRemove a Search keywordDELETEList campaign-level negative keywordsGETReplace campaign-level negative keywordsPUTList campaign negative listsGETReplace campaign negative listsPUT

Bidding

Read a campaign's current biddingGETList portfolio bid strategiesGETCreate portfolio bid strategyPOSTUpdate portfolio bid strategyPATCH

Recommendations

List Google Ads recommendationsGETApply Google Ads recommendationsPOSTDismiss Google Ads recommendationsPOST

Other

Read the platform's review verdict for an adGET
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Campaigns and Ads

List Performance Max asset groups

Read Performance Max asset groups and their linked text, image and YouTube assets. campaignId is the platform campaign id returned by creation or the campaign list. The campaign must be visible to the caller. Uses a 10-minute cache, with the last successful response served as stale when Google quota is exhausted. Removed groups and asset links are excluded. Campaign-level brand assets on campaigns with brand guidelines enabled are not included.

PlatformsGoogle
GET
/v1/ads/campaigns/{campaignId}/asset-groups

Authorization

bearerAuth
AuthorizationBearer <token>

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

In: header

Path Parameters

campaignId*string

Google Ads campaign id.

Match^\d+$

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.adcampaigns.listGoogleAssetGroups({  path: {    campaignId: 'campaign_abc123',  },});console.log(data);
{  "assetGroups": [    {      "id": "123456789",      "resourceName": "customers/9122445560/assetGroups/123456789",      "name": "Social publishing",      "status": "ENABLED",      "finalUrls": [        "https://zernio.com"      ],      "assets": [        {          "resourceName": "customers/9122445560/assets/987654321",          "fieldType": "HEADLINE",          "status": "ENABLED",          "text": "Schedule posts"        }      ]    }  ],  "cachedAt": "2026-09-10T09:00:00Z",  "stale": false}
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Update campaign conversion goals

Sets `biddable` on campaign goals, switches `goalConfigLevel`, and/or points the campaign at a custom conversion goal, in one mutate. `customConversionGoalId: null` clears it; Google refuses that (400) while the campaign stays at CAMPAIGN level with no biddable goals, so send `goalConfigLevel: CUSTOMER` with it to fall back to the account goals. Returns the re-read campaign goals.

Create a Performance Max asset group

Add an asset group to an existing Performance Max campaign. The group, any new assets, their links and an optional listing-group tree are created in one atomic request, so Google checks the asset minimums (for non-retail campaigns) against the whole set. Created PAUSED unless status is ENABLED. validateOnly: true runs Google's validation without creating anything.