Conversions API (CAPI)
Last updated September 2026
The Conversions API, or CAPI, sends conversion events to Meta directly from a business's server, rather than relying on a browser-based pixel, recovering data that ad blockers, cookie restrictions, and browser privacy settings increasingly block. It is the server-side counterpart to the Meta Pixel, not a replacement for it.
The Meta Pixel depends on a visitor's browser cooperating: no ad blocker, no restrictive cookie settings, no privacy feature stripping the request before it reaches Meta. As browsers have tightened those defaults, an increasing share of real conversions go unreported through the pixel alone. CAPI sends the same conversion event from the business's own server, a path none of those browser-side restrictions can touch.
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How the two work together
CAPI is not a swap for the pixel, it is a second, independent channel reporting the same events. When both are configured correctly with event deduplication, usually via a shared event ID, Meta receives whichever signal arrives first and discards the duplicate, giving its algorithm the most complete picture of what actually happened without double-counting a single conversion.
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Why this matters more every year
The trend line runs one direction: browsers keep restricting third-party tracking, and that trend is not reversing. Advertisers who rely on pixel-only tracking are measuring a shrinking, increasingly biased sample of their real conversions. CAPI is the mechanism that keeps measurement accurate as that erosion continues.
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Server-side event delivery, unaffected by browser ad blockers or cookie restrictions.
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Requires deduplication against pixel events to avoid double-counting conversions.
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Can send richer, more reliable event data, order value, hashed customer info, than a browser event alone.
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Improves Meta's ad delivery optimization by restoring signal loss from browser-side tracking limits.
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How Conduit implements it
Conduit sets up CAPI through a server-side GTM container or a direct API integration, matched event-for-event against the browser pixel with proper deduplication, so a white label client's Meta campaigns keep optimizing on a complete conversion signal even as browser privacy defaults keep tightening.
Agencies running Meta campaigns without CAPI in 2026 are increasingly reporting on incomplete data, since a growing share of conversions never reach the pixel at all due to browser and device-level restrictions.
Takeaway
Agencies running Meta campaigns without CAPI in 2026 are increasingly reporting on incomplete data, since a growing share of conversions never reach the pixel at all due to browser and device-level restrictions.
Where this applies
