--- title: "Recipe: Ad Network Feedback, Finally Worth Serving" description: Streamline ad network feedback with Google Ads and LinkedIn Ads integration for accurate conversion tracking and improved campaign performance. image: https://tomdelaney.us/hubfs/Gemini_Generated_Image_eyl073eyl073eyl0.png --- [![White Modern Minimalist Signature Brand Logo (Website) (4)](https://24279033.fs1.hubspotusercontent-na1.net/hubfs/24279033/White%20Modern%20Minimalist%20Signature%20Brand%20Logo%20(Website)%20(4).png)](https://tomdelaney.us) - [Resume](https://tomdelaney.us/resume) - [Blog](https://tomdelaney.us/blog) - [Portfolio](https://tomdelaney.us/portfolio) [Contact Me](https://tomdelaney.us/contact-me) Search **the website** # Recipe: **Ad Network Feedback, Finally Worth Serving** ![](//24279033.fs1.hubspotusercontent-na1.net/hubfs/24279033/raw_assets/public/@marketplace/if_else_agency/Aesthetics/assets/images/icons/arrow-down.svg) ![Ads Connector](https://24279033.fs1.hubspotusercontent-na1.net/hubfs/24279033/Gemini_Generated_Image_eyl073eyl073eyl0.png) ## Share this **post** # Recipe: Ad Network Feedback, Finally Worth Serving **Yield:** Google Ads and LinkedIn Ads that know what actually happened after the click **Prep time:** Several days (Google developer token review adds real wait time) **Active time:** Half a day to wire up **Difficulty:** Intermediate — the tech is approachable, the process is not [view the project brief](https://tomdelaney.us/ads-connector-portfolio) --- ## Ingredients **Google Ads** - Google Ads manager account with developer token (standard access requires Google review) - OAuth 2.0 credentials (client ID, client secret, refresh token) - Conversion actions created in Google Ads Manager (one per event type) - GCP project with Secret Manager enabled - Cloud Function deployment **LinkedIn Ads** - LinkedIn Campaign Manager account - Conversion events created in Signals Manager (one per event type) - Direct API access token from Signals Manager **HubSpot** - Operations Hub (required for custom coded workflow actions) - Three workflows: Account Signup, Paid Upgrade, Enterprise Deal Closed --- ## Method ### 1. Set up Google Ads credentials Apply for a Google Ads developer token in your manager account. Standard access — required to call the API in production — goes through a Google review of your use case. Budget time for this. Once approved, create OAuth 2.0 credentials in Google Cloud Console and generate a refresh token. Store the full credential set in GCP Secret Manager: ``` google-ads-client-id google-ads-client-secret google-ads-refresh-token google-ads-developer-token google-ads-customer-id cloud-function-api-key ← any secure random string, used to authenticate HubSpot ``` ### 2. Create conversion actions in Google Ads In Google Ads Manager, create a conversion action for each event type (signup, upgrade, deal closed). Each gets a numeric conversion action ID — you'll pass these in the HubSpot workflow payload. ### 3. Deploy the Cloud Function Deploy `index.js` as a Google Cloud Function. Set `GCP_PROJECT_ID` as an environment variable. The function: - Validates the `x-api-key` header against the secret - Pulls credentials from Secret Manager on cold start, then caches them - Refreshes an OAuth access token per invocation - SHA-256 hashes email and phone before sending - Posts to the Google Ads Conversions API Payload shape HubSpot sends: ``` { "email": "contact@example.com", "phone": "+15555550100", "gclid": "abc123", "googleAdsConversionActionId": "123456789", "conversionValue": 5000, "conversionCurrency": "USD"} ``` `conversionValue` accepts a deal amount for closed won events, or a static fallback for signups and upgrades. ### 4. Set up LinkedIn conversion events In LinkedIn Campaign Manager: **Data → Signals Manager → Direct API** Create a conversion event for each workflow. Each gets a numeric ID that forms part of the conversion URN: ``` urn:lla:llaPartnerConversion: ``` Generate an access token from the same interface. Store it in HubSpot's secret store as `linkedin_access_token`. ### 5. Add the HubSpot custom coded action For each workflow, add a custom coded action using `workflow-action.js`. Set the correct `` for that workflow. Configure input properties: ``` email → Contact email firstName → Contact first name lastName → Contact last name ``` The action returns `api_status` (success/error) and `api_response` as output fields — useful for workflow branching on failure. ### 6. Wire up the HubSpot workflows Each workflow runs two actions in sequence: 1. **Webhook action** → Cloud Function URL, `x-api-key` header, conversion-specific payload 2. **Custom coded action** → LinkedIn, with the matching conversion ID Build one workflow, confirm it fires correctly, then clone and adjust the conversion IDs for the other two. --- ## Plating Notes **Expect 12–24 hours before conversions appear** in ad network dashboards after a successful API response. This is normal. A missing conversion after an hour does not mean something is broken — check Cloud Function logs and LinkedIn API responses first before assuming failure. **Google Ads test conversions** show up in a separate test account view. LinkedIn has no equivalent — you're testing against production data from the start. **The Google developer token review** is the longest single step. Apply early. The review evaluates your use case and app setup before granting standard API access. **Conversion signal quality improves over time.** The real payoff isn't immediate — it accumulates as the ad platforms collect enough signals to meaningfully adjust targeting. Give campaigns several weeks before evaluating lift. --- **[github.com/Suixcity/hubspot-ads-connector](https://github.com/Suixcity/hubspot-ads-connector)** *Part of a professional portfolio — [view the project brief](https://tomdelaney.us/ads-connector-portfolio)* ![Thomas Delaney](https://app.hubspot.com/settings/avatar/6aa77e4b15fadd044100136646f8d3a4) [**Thomas Delaney**](https://tomdelaney.us/blog/author/thomas-delaney) People are talking about this blog post ### Related blog posts [![Recipe: Channel Partners, Matched and Plated at the Table](https://24279033.fs1.hubspotusercontent-na1.net/hubfs/24279033/Gemini_Generated_Image_vpvzanvpvzanvpvz.png) Recipe: Channel Partners, Matched and Plated at the Table on Mar 6, 2026 11:53:11 AM](https://tomdelaney.us/blog/recipe-channel-partners-matched) [![Recipe: Contracts to CRM, Delivered While Still Hot](https://24279033.fs1.hubspotusercontent-na1.net/hubfs/24279033/Gemini_Generated_Image_lhgafjlhgafjlhga.png) Recipe: Contracts to CRM, Delivered While Still Hot on Mar 5, 2026 11:29:31 AM](https://tomdelaney.us/blog/recipe-contracts-delivered-while-still-hot) [![Recipe: Sanctions Screening, Baked into Every Workflow](https://24279033.fs1.hubspotusercontent-na1.net/hubfs/24279033/Gemini_Generated_Image_r3fopir3fopir3fo.png) Recipe: Sanctions Screening, Baked into Every Workflow on Mar 5, 2026 9:41:54 AM](https://tomdelaney.us/blog/recipe-sanctions-screening) ## Related **blog posts** ![](https://24279033.fs1.hubspotusercontent-na1.net/hubfs/24279033/Gemini_Generated_Image_vpvzanvpvzanvpvz.png) **Recipe: Channel Partners, Matched and Plated at the Table** Recipe: Channel Partners, Matched and Plated at the Table Yield: Partner assignments that live in HubSpot, not in... Read more ![](https://24279033.fs1.hubspotusercontent-na1.net/hubfs/24279033/Gemini_Generated_Image_lhgafjlhgafjlhga.png) **Recipe: Contracts to CRM, Delivered While Still Hot** Read more ![](https://24279033.fs1.hubspotusercontent-na1.net/hubfs/24279033/Gemini_Generated_Image_r3fopir3fopir3fo.png) **Recipe: Sanctions Screening, Baked into Every Workflow** Read more ![White Modern Minimalist Signature Brand Logo (Website) (5)](https://24279033.fs1.hubspotusercontent-na1.net/hubfs/24279033/White%20Modern%20Minimalist%20Signature%20Brand%20Logo%20(Website)%20(5).png) This website is the personal project of Thomas Delaney and the views and thoughts expressed are strictly his own and do not represent any other entity.  ```json { "@context" : "https://schema.org", "@type" : "BlogPosting", "author" : { "@type" : "Person", "name" : "Thomas Delaney", "url" : "https://tomdelaney.us/blog/author/thomas-delaney" }, "dateModified" : "2026-03-06T15:52:28.174Z", "datePublished" : "2026-03-06T15:49:30.000Z", "headline" : "Recipe: Ad Network Feedback, Finally Worth Serving", "image" : [ "https://tomdelaney.us/hubfs/Gemini_Generated_Image_eyl073eyl073eyl0.png" ], "mainEntityOfPage" : { "@id" : "https://tomdelaney.us/blog/recipe-ad-network-feedback-finally-worth-serving", "@type" : "WebPage" }, "publisher" : { "@type" : "Organization", "logo" : { "@type" : "ImageObject", "url" : "https://tomdelaney.us/hubfs/White%20Modern%20Minimalist%20Signature%20Brand%20Logo.png" } } } ```