What is the Meta Conversions API (CAPI)?

Meta Conversions API (CAPI) is a server-side integration that sends conversion events directly from your server to Meta, bypassing browser-based restrictions like ad blockers and iOS privacy changes. It supplements the Meta Pixel to improve data completeness and conversion signal quality.

Why is my Meta Pixel missing conversions?

Browser-based Pixel tracking is blocked by ad blockers, affected by cookie consent restrictions, and limited by Apple's ATT framework and iOS 14+ privacy changes. CAPI captures events that the Pixel misses, typically recovering 30–200% additional conversion data.

What is event deduplication and why is it important?

When running both the Meta Pixel and CAPI simultaneously, the same conversion event can be reported twice. Event deduplication uses a matching event_id to ensure Meta only counts each conversion once, keeping your ad performance data accurate.

What is event match quality (EMQ) in Meta?

Event match quality is Meta's score (1–10) indicating how well your conversion events can be matched to Facebook user profiles. Higher EMQ means better ad attribution, more efficient optimization, and lower CPAs. Improving EMQ typically involves sending additional customer data parameters like email hashes, phone numbers, and external IDs.

Platform Service

Meta Pixel & Conversions API — Capture More, Optimize Better

iOS privacy changes and ad blockers are silently stealing your Meta conversion data. We implement Conversions API alongside your Pixel to recover missing events and improve ad optimization signals.

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What Meta CAPI Delivers

30–50%

More Reported Conversions

Most clients see a 30–50% increase in reported conversions within the first 30 days of activating CAPI. Events that the Pixel was silently missing — blocked by iOS, ad blockers, or browser restrictions — start flowing through the server side.

15–25%

Average CPA Reduction

With stronger conversion signals reaching Meta's algorithm, ad delivery optimizes faster and more accurately. Clients typically see a 15–25% reduction in cost per acquisition within the first 60 days — without changing budgets or creative.

Avg. 8.5

Event Match Quality on Conversion Events

Meta's Event Match Quality (EMQ) score measures how well your conversion data matches real Facebook users. CAPI-powered events consistently achieve EMQ scores of 8.5 or higher — giving Meta's algorithm the signal it needs to find and convert your highest-value customers.

Service Scope

What's Included in Meta Pixel & CAPI Services

Meta Pixel Setup & Audit

Install or audit your Meta Pixel via GTM, configure standard events, and validate in Meta Events Manager.

Conversions API (CAPI) Implementation

Server-side CAPI deployment via GTM server-side container, direct API, or partner integrations (Shopify, WooCommerce).

Event Deduplication

Configure matching event_id parameters across Pixel and CAPI to prevent double-counting in Meta Ads reporting.

Event Match Quality (EMQ) Improvement

Increase your EMQ score by passing hashed customer data — email, phone, first/last name, and external IDs.

Standard & Custom Event Mapping

Map your business events (ViewContent, AddToCart, InitiateCheckout, Purchase, Lead) correctly across both channels.

iOS 14+ & ATT Compliance

Configure 8-event prioritization, Aggregated Event Measurement (AEM), and domain verification for post-iOS accuracy.

Meta CAPI via sGTM

Deploy CAPI through a server-side GTM container for enhanced first-party data control and maximum privacy compliance.

Reporting & Validation

Validate all events in Meta Events Manager, compare Pixel vs. CAPI coverage, and document the uplift in conversion visibility.

Common Problems

Meta Tracking Issues We Fix

Pixel firing but conversions disappearing in Events Manager
Purchase events missing after iOS 14+ update
Duplicate conversion events inflating reported results
Low event match quality (EMQ) score reducing attribution
CAPI and Pixel sending different event counts
Domain not verified in Meta Business Manager
Standard events mapped incorrectly for CAPI
Ad optimization suffering from incomplete signal data

Our Process

How We Implement Meta CAPI

Audit & Diagnosis

Review Events Manager, verify domain, check event coverage, and identify exactly what's missing or broken.

CAPI Integration

Deploy server-side CAPI via sGTM, direct API, or native platform integration (Shopify, WooCommerce).

Deduplication & EMQ

Configure event_id matching and pass additional customer parameters to maximize event match quality.

Validation & Reporting

Confirm all events flow correctly in Events Manager and document the uplift in conversion coverage.

FAQ

Meta Pixel & CAPI — Frequently Asked Questions

Meta CAPI is a server-to-server integration that sends conversion event data directly from your server to Meta — bypassing ad blockers and browser privacy restrictions that limit the Meta Pixel. It works alongside the Pixel to improve data completeness and ad optimization signal quality.

Ad blockers, iOS privacy frameworks, and cookie consent restrictions all reduce how much data the browser-based Pixel can capture. This means Meta's algorithm has less signal to optimize ad delivery — resulting in higher CPAs and less efficient campaign performance. CAPI is the solution.

When you run both Pixel and CAPI, the same conversion can fire from both channels. Deduplication uses a shared event_id to tell Meta it's the same event, so it's only counted once. Without deduplication, your conversion data becomes inflated and unreliable.

EMQ is Meta's 1–10 score for how confidently conversion events can be matched to Facebook user profiles. A higher EMQ means better attribution, lower CPAs, and more efficient ad optimization. Improving EMQ involves passing additional hashed customer parameters alongside your events.

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