Drive More Incremental Revenue With Your Own Data - WorkMagic iCAPI Now Available in Open Beta
by
Daniel Oh
If It's Not Incremental, It's Not Improving Ad Performance
Everyone in the ecosystem - measurement partners, ad platforms, agencies - have all been telling brands that they need to connect to Conversion APIs in order to keep ad performance humming and efficient.
The thesis of CAPI is this:
Ad platforms need event and conversion data to understand who to target.
The better picture they have of your customer, the better they can pluck them out from their user base.
With pixels becoming less and less effective at capturing that data, ad platforms created Conversion API endpoints for brands and measurement partners to stream first-party data in to fill those gaps.
If you're sending conversion signals through a measurement provider, even better! It's unbiased conversion data that should improve targeting, and therefore conversion rate.
But here's the thing most vendors won't tell you: there's a huge difference between sending conversion signals and sending signals that will actually improve conversions.
Raw conversion data isn't going improve platform targeting much because it's not incremental. Measurement partners often attribute conversions to organic customers.
Think back to your own ad experience. When was the last time you clicked a retargeting ad when you were already on your way to purchase?
Without incrementality, CAPI signals can't distinguish genuinely ad-driven conversions from regular sales you would've gotten anyway. So your platforms optimize toward both equally, which leads to you burning budget on customers you didn't need to pay to acquire.
Ok, But How Do I Send Incremental Conversion Data to Platforms?
To start with, you need a platform that's able to:
Run lift tests to confirm the incrementality of your ad platforms
Attribute converted users to ad signals on a continous basis
The ability to reconcile both
The reason why lift test vendors don't offer CAPI solutions is because of how lift tests work - they can prove definitively that ads drove conversions, but they can't necessarily attribute those sales to a specific ad engagement or creative.
The reason why attribution providers can't send incremental data is because attribution alone has no way to prove incrementality.
So in essence, you need a platform that can run lift tests, layer incrementality onto attribution, and connect with your ad platform's API. If you're familiar with WorkMagic already, you know where this is going.
Introducing WorkMagic's iCAPI in Beta
WorkMagic's Incremental Conversion API (iCAPI) takes the incremental attribution data that our users optimize from, and feeds it to ad platforms to significantly enrich their algorithms and performance.
When you connect your ad platforms through WorkMagic's iCAPI, three things happen that no other provider offers:
1 - Incrementality-Calibrated Signals
WorkMagic runs controlled lift tests — holdout experiments that isolate which conversions were genuinely caused by your ads versus those that would have occurred organically. We then use those lift tests to calibrate our attribution model, which brands (and now ad platforms) can use to optimize campaigns, ad sets, and creatives that are driving incremental performance.
That means the conversion signals we send to your ad platforms are filtered through this incrementality data.
What does that mean in practice? Your platforms aren't just getting more conversion signals. They're getting signals that reflect true, business-driven performance.
Meta's algorithm learns to find customers who actually drive incremental revenue. Google optimizes toward purchases that wouldn't have happened without your ads. Over time, this compounds: better signals produce better targeting, better targeting drives better results, and your campaigns become increasingly efficient.
Other iCAPI providers give platforms more data. WorkMagic gives them better data.
2 - Cross-Channel Deduplication
Before any conversion event is sent to any platform, WorkMagic deduplicates it across all your connected channels. If a customer clicked a Meta ad and a Google ad before purchasing, only one platform gets attribution credit — and it's the right one, based on WorkMagic's attribution model, not each platform's self-serving last-click assumption.
This eliminates the artificial ROAS inflation that makes cross-channel reporting so unreliable. You get a clean signal foundation that reflects reality, not each platform's optimistic self-assessment.
3 - Zero Engineering Lift
WorkMagic handles the infrastructure. That means maintaining the integration as platform specs change, keeping your signal pipeline running cleanly, and ensuring compatibility as Meta, Google, TikTok, and emerging platforms evolve their APIs. You connect once. We handle the rest.
What to Expect After You Connect
Improved Event Match Quality. On Meta, you'll see your EMQ score rise as WorkMagic sends richer, more complete conversion data with strong customer identifiers. Higher EMQ means better audience matching and more effective targeting.
Cleaner cross-channel measurement. With deduplication active, your platform-reported ROAS will likely decrease — and that's a good sign. It means your measurement now reflects reality rather than each platform's inflated self-reporting. You'll be making budget decisions based on what's actually driving growth.
Better algorithm performance over time. Ad platform delivery systems improve as the quality of their input data improves. Incremental signals teach algorithms to find customers who drive real business outcomes. This effect compounds: the longer your CAPI runs through WorkMagic, the smarter your platform targeting becomes.
A more durable first-party data foundation. Signal loss isn't going to reverse. As privacy changes continue, brands with strong server-side data infrastructure will have a structural advantage over those relying on browser-based tracking. Your WorkMagic CAPI integration is built to last.
Supported Platforms
WorkMagic's iCAPI currently supports:
Meta — Improve Event Match Quality and send enriched, deduplicated purchase events back to Meta Ads
Google — Send WorkMagic-attributed purchases as offline conversions, enabling campaign optimization around genuinely high-quality orders
Klaviyo — Ensure every customer interaction and conversion is accurately matched server-side
Axon (by Applovin) — Send incrementality-calibrated events to improve event match quality and campaign optimization
Vibe — Improve event match quality and campaign performance with precise, attribution-adjusted conversion data
Ready to Send Your Ad Platforms Signals They Can Actually Learn From?
Connecting WorkMagic's iCAPI takes minutes, not months. There's no engineering team required, just your ad account credentials and a couple of clicks. Explore the setup guides for each platform:
WorkMagic's iCAPI is available to all WorkMagic customers. Questions? Reach out to your account team or visit our Help Center.