Meta Conversions API (CAPI)

The Meta Conversions API (CAPI) is Meta's server-side event tracking solution that allows businesses to send web events, app events, and offline conversions directly from their servers to Meta's servers, complementing or replacing the browser-side Meta Pixel. Launched as a response to increasing browser-side tracking restrictions (iOS 14.5 App Tracking Transparency, Intelligent Tracking Prevention, ad blockers), CAPI provides a more reliable and privacy-compliant method for tracking conversions and optimizing Facebook and Instagram advertising campaigns. When a user takes an action on your website (purchase, add to cart, lead form submission), the event data is sent from your server to Meta's Conversions API endpoint along with customer information parameters (hashed email, phone, IP address) that Meta uses for event matching — connecting server events to Facebook/Instagram users. CAPI supports event deduplication with the browser-side Pixel using unique event IDs, ensuring conversions are not double-counted when both tracking methods are active. A key feature for privacy compliance is Limited Data Use (LDU) mode: when a user denies marketing consent, businesses can flag the event for LDU processing, which restricts how Meta uses the data while still maintaining basic measurement. For MENA businesses running Meta Ads, CAPI is increasingly essential as browser-side Pixel reliability decreases. Studies show that advertisers using both Pixel and CAPI see approximately 40% more attributed conversions compared to Pixel alone. Arqam360 integrates directly with Meta CAPI, forwarding consent-aware events server-side with automatic LDU flagging for privacy-restricted visitors and event deduplication to prevent double-counting.