integration recipe · Stripe → GA4
Send Stripe purchases to GA4, server-side.
A Stripe purchase happens off your page, where no pixel fires. Point Stripe at a TracerKit webhook and it reaches GA4's Measurement Protocol with the visitor's click ids and hashed email — no code, and verified end to end.
Free sweep — see your server-side readiness before you connect anything. Or start free →
Raw email and phone are hashed before anything is stored. IP and user agent ride only the delivery, never the event log.
set it up
Three steps. No deploy.
Create the webhook in TracerKit
On your site's page in the dashboard, add a conversion webhook with the Stripe preset. You get a URL once — it's the only credential, and only its hash is stored.
Paste it into Stripe
In Stripe → Developers → Webhooks, add an endpoint with your TracerKit URL and subscribe it to checkout.session.completed. Other event types answer 200 and are ignored, so Stripe never retries or disables the endpoint.
Connect GA4 with server-side forwarding on
Add GA4 as a destination with the property's Measurement ID (G-…) and a Measurement Protocol API secret from the data stream, and turn on server-side forwarding. From the next purchase onward, every conversion is enqueued to GA4's Measurement Protocol.
join the visitor
Set client_reference_id to the visitor's TracerKit id when you create the Checkout Session (the loader exposes it as tracerkit.anonymousId). The purchase then joins the visitor's click ids directly; without it, TracerKit falls back to the hashed email.
Sites that enforce per-field consent skip this join: the conversion then carries only what Stripe sent, with no click ids from the visit.
sign the webhook
Copy the endpoint's signing secret (whsec_…) from the Stripe dashboard into the hook. TracerKit verifies the Stripe-Signature header, including the timestamp, on every delivery. Until a secret is set, the unguessable URL is the only credential.
why server-side
GA4 can only optimise on what it receives.
It arrives even when the pixel didn't fire.
The conversion comes from Stripe's servers, so blockers, ITP and a visitor who closed the tab before the thank-you page loaded don't lose it.
It matches to a real visit.
GA4 stitches the event to the visitor's session using the client and session ids the loader captured, so the conversion lands in the same user journey as the page views.
It's counted once.
Send the conversion server-side only (not also from gtag) and GA4 counts it once, in the right session.
You can prove it happened.
Most tools stop at "sent". TracerKit records each delivery's outcome and reconciles what it observed against what GA4 reports, so a silent break shows up as drift, not as a bad quarter.
questions
Asked and answered.
Do I need a developer?+
No. Creating the webhook and pasting the URL into Stripe is the whole install. Threading the visitor id through is one optional line if you want direct click-id matching instead of email matching.
Will this double count against my GA4 pixel?+
Send the conversion server-side only (not also from gtag) and GA4 counts it once, in the right session.
What if the visitor blocked the pixel?+
That's the point of server-side. The Stripe conversion arrives from Stripe's servers, not the visitor's browser, so ad blockers and ITP never see it. TracerKit matches it back to the visitor's landing visit by the hashed email or the visitor id you threaded through.
How do I know it's working?+
Each webhook shows when it last received a delivery, every forwarded event shows its delivery status per destination, and reconciliation compares what TracerKit observed against what GA4 reports — so drift is a number you see, not a hunch.
What does it cost?+
Server-side forwarding is on the Server-side tier at a flat monthly price per site. There is no per-conversion metering, so a busy checkout day never becomes a surprise bill.
Related recipes
Stripe to other platforms
other tools to GA4
Every Stripe purchase, in the light.
Tag management is free forever. Server-side forwarding starts with a 14-day trial — no card, no per-conversion metering.