Individual skill
server-side-conversion-tracking
Set up server-side conversion tracking so purchases are reported accurately to Facebook, TikTok, Google and Bing despite iOS restrictions, ad blockers and cookie loss. Use when conversions are under-reported, when platform-reported purchases do not match real orders, when asked about Conversions API / Events API / offline conversions / CAPI, click id passthrough (fbclid, ttclid, gclid, msclkid), or when ad optimization has degraded after tracking changes.
skills/server-side-conversion-tracking/SKILL.md
Source commit edbecfa9099c4addae1f500cca1ac067204b30fd
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- Last checked
- Nov 4, 2026
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- Repository last updated
- Nov 6, 2026
- License
- MIT
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# Server-Side Conversion Tracking
Browser pixels lose a large and unpredictable share of conversions to iOS tracking prevention, ad blockers, cookie lifetime limits and cross-domain hops. Server-side reporting fixes the *reporting*, which is what the ad platform's bidding model learns from. This skill covers the model, the setup order and how to verify it.
## When to use
- Ad platform reports fewer purchases than the store/database actually recorded
- CPA looks like it got worse right after a tracking change, with no change in real sales
- Setting up a new funnel that will receive paid traffic
- Asked about CAPI / Events API / offline conversion import / click id passthrough
- Attribution disagreements between platforms ("Facebook claims 40 sales, Google claims 30, we had 45 orders")
## The model, in the order it must be built
