What is the Conversions API (CAPI)?
Conversions API is Meta's server-side tracking method. It pairs with the Pixel to recover ~30% of conversion data lost to iOS 14.5+ and ad-blockers. Mandatory in 2026.
The definition
Conversions API (CAPI) is a server-to-server tracking method where your Shopify backend sends conversion events directly to Meta, bypassing the browser. Pairs with the Meta Pixel (browser-side) for redundant + complementary tracking.
Why it matters in 2026
Browser-only tracking misses ~30% of conversions due to iOS 14.5+ ATT, third-party cookie deprecation, and ad-blockers. CAPI recovers most of that — measurement accuracy goes from 70% to 90%+, which directly improves Meta's optimization and your ROAS reporting.
How to set it up
Shopify's official Facebook channel app handles CAPI natively — turn it on in Shopify admin → Facebook & Instagram channel. For more control: use a tag-management approach with stape.io or Shopify Functions. The DIY route requires a dev. The official channel works for 95% of brands.
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