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Guides, research, and product updates from the Apex team.

Featured · Guide

The anatomy of a declined transaction — and how to recover it

A field guide to decline codes, which are recoverable, and the retry & routing strategies that win them back.

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Developers

Build on the Apex API

A single, well-documented API and no-code connectors get your data in and decisions out fast. Explore the docs, API reference, and changelog.

Documentation API reference Changelog
POST /v1/decisions
// request a routing + auth decision
curl https://api.apex-payment.com/v1/decisions \
  -H "Authorization: Bearer •••" \
  -d '{ "amount": 24800, "currency": "EUR", "bin": "414720" }'

// 200 OK
{ "route": "stripe", "auth": "dataonly_3ds2", "p_approve": 0.961 }

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