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Home/Pinterest CAPI
Pinterest API for Conversions

Pinterest Drives the Discovery.
We Make It Drive the Attribution.

Pinterest shoppers have high purchase intent — but the Tag fires in a browser that iOS, Safari, and ad blockers routinely block. Pinterest API for Conversions routes your checkout events server-to-server, so the platform that inspired the purchase actually gets the credit.

Book Free Pinterest Tracking Audit → See Attribution Fixed
✓ Match quality Low → High ✓ ROAS 0.8x → 2.3x ✓ Attribution gap closed
Pinterest Ads — After CAPI Setup
Match Quality
High ✓
ROAS
2.3x
CHECKOUT Rate
94%
Attribution Gap
6% ✓
The Problem

Pinterest is your highest-intent traffic. But the Tag misses most of the conversions it inspires.

Why Pinterest attribution breaks without CAPI:

69%

Your Pinterest conversions have no attribution

Without CAPI, the Pinterest Tag only matches ~31% of actual conversions. The remaining 69% appear as “Direct” in your analytics — you’re crediting Pinterest $0 for sales it inspired. Budgets get cut on a platform that was actually working.

Safari

Pinterest’s audience skews heavily Safari

Pinterest’s core audience — home, fashion, food, lifestyle shoppers — skews heavily female and iOS. Safari’s ITP limits Pinterest Tag cookies to 7 days and blocks cross-site tracking, breaking attribution for most of your best customers.

0.8x

Reported ROAS looks negative, but isn’t

A 0.8x ROAS on Pinterest usually means your Tag is attributing 31% of actual revenue. The real ROAS is often 2x–3x. CAPI reveals what was always there — and gives Pinterest’s algorithm the signal to optimise towards your actual buyers.

Pinterest Ads — Real Client Data

Same campaigns. Same traffic. Pinterest CAPI finally closes the attribution gap.

Here’s what a home goods client’s conversion data looked like before and after Pinterest API for Conversions:

Before — Tag only, match quality: Low
Pinterest Ads › Conversion Insights
Match Quality: Low
Conversions Tracked
40
CHECKOUT events / last 30d
ROAS
0.8x
Based on partial signal
Attribution Gap
69%
Conversions missing attribution
⚠ Match quality is Low. Enable Pinterest API for Conversions to improve signal and reduce attribution gap.
EventReceivedMatchedRateQuality
PAGE_VISIT 12,441 3,978 32% Low
ADD_TO_CART 534 174 33% Low
CHECKOUT 127 40 31% Low
After — CAPI active, match quality: High
Pinterest Ads › Conversion Insights
Match Quality: High
Conversions Tracked
119
CHECKOUT events / last 30d
ROAS
2.3x
Full attribution active
Attribution Gap
6%
Near-zero gap with CAPI
✓ Pinterest API for Conversions active. High match quality. Server-side events sending correctly.
EventReceivedMatchedRateQuality
PAGE_VISIT 12,441 11,571 93% High
ADD_TO_CART 534 490 92% High
CHECKOUT 127 119 94% High
NJ
Nadia J.
Home & Lifestyle E-commerce · Canada
✓ Verified Client
Match Quality
Before: Low (31%)
High (94%)
↑ 3× more conversions attributed
Pinterest ROAS
Before: 0.8x
2.3x
↑ Nearly 3× real return

“We’d classified Pinterest as a ‘brand awareness only’ channel because the reported ROAS was under 1x. After CAPI setup we could see it had been driving 2.3x ROAS the entire time — we were just blind to 69% of the conversions. We tripled our Pinterest budget the next week.”

How It Works

Pinterest API for Conversions sends your checkout events from your server — Safari can’t block that.

1
Pinterest Conversions API Token Setup
We set up your Pinterest Business Access token and configure the API for Conversions endpoint. This creates the secure channel between your server and Pinterest’s attribution system.
2
Event Schema Mapping
We map your key events — PAGE_VISIT, ADD_TO_CART, CHECKOUT, SIGNUP — to Pinterest’s standard schema. Customer email and phone data are hashed and sent for maximum match rate.
3
Server-Side Routing via GTM
Pinterest CAPI events route through your GTM Server Container. Same server infrastructure that handles Meta, Snap, and TikTok CAPI — zero additional setup cost if you’re already running server-side.
4
Match Quality Verification
We confirm match quality has moved from Low to High in Pinterest Ads Manager. We test event delivery, check deduplication, and verify CHECKOUT events are attributing correctly before handing over.
After Pinterest CAPI Setup
Match Quality
High ✓
ROAS
2.3x
CHECKOUT Rate
94%
Attribution Gap
6%
What Changes
Safari-blocked conversions now attributed
ROAS triples as hidden revenue surfaces
Algorithm gets 3x more purchase signal
Budgets scale on real data, not partial signal
Pinterest CAPI FAQ

Questions about Pinterest API for Conversions.

The Pinterest Tag fires from the user’s browser — which Safari ITP and iOS restrict. Pinterest API for Conversions (CAPI) fires from your server after a purchase happens. CAPI events can’t be blocked by browsers. We run both together: the Tag for page behaviour, CAPI for purchase attribution. Deduplication ensures nothing counts twice.
Almost certainly. If your Pinterest match quality is “Low” in Ads Manager, you’re attributing fewer than 35% of actual conversions. The ROAS you’re seeing is based on partial data. After CAPI setup, most clients see their reported ROAS double or triple — not because performance improved, but because the platform can finally see what it was always driving.
Priority order: CHECKOUT (highest value), ADD_TO_CART (purchase intent signal), PAGE_VISIT (reach and behaviour). If you run lead gen, LEAD and SIGNUP are also valuable. We map all relevant events based on your business type and configure them in order of attribution impact.
Setup takes 2–3 business days. Match quality improvement in Pinterest Ads Manager is visible within 24–48 hours of going live. ROAS improvement follows as Pinterest’s algorithm re-optimises delivery based on the improved conversion signal — typically 7–21 days for measurable lift.
Yes, and it’s faster if you do. If you’re already on GTM Server Container for Meta and TikTok, adding Pinterest CAPI is a configuration task — not a new infrastructure build. The same server container adds a Pinterest destination. Most clients who are already server-side can have Pinterest CAPI live in 1–2 days.
📌 Pinterest CAPI Specialist

Your Pinterest ROAS isn’t 0.8x.
Safari is just hiding your sales.

Free 20-minute audit. We check your current Pinterest match quality, estimate your real ROAS, and show you exactly what CAPI would recover before you spend a penny.

Book Free Pinterest Audit →

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