9 docs tagged with "getting-started"

OAuth 2.0 client credentials flow with AWS Cognito — obtain, cache, and refresh Bearer tokens for all A55 API requests in cURL, Python, and JavaScript.

How A55 credentials work — entity_uuid, merchant_uuid, client_id, client_secret, wallet_uuid — and how to manage them securely.

Sandbox and production share the same API URL — your Cognito credentials select the environment. Set up both, make your first call, and go live safely.

Complete checklist of 23 items to verify before switching from sandbox to production with A55.

H2H, SDK, and Checkout Page: choose an integration model by control level, time to market, UX flexibility, and 3DS handling. Includes decision tree, comparison matrix, and responsibility breakdown.

A55 Payment API — cards, PIX, wallets, and subscriptions across 7 LATAM countries with 29 acquirers.

Step-by-step onboarding process from initial contact to production launch with A55 payment API.

Sandbox credit card simulator — use the last digit to control approval, decline, timeout, and every edge case. Includes ready-to-run examples in cURL, Python, and JavaScript.

Go from zero to a working credit card charge in 5 minutes using the A55 sandbox API.