🚀 Welcome to the a55 Payment API!

🧩 Core Manager API

The Core Manager API is a modular and scalable solution designed for platforms looking to embed financial services and payment infrastructure directly into their products — whether you're building an e-commerce platform, SaaS, ERP, marketplace, or integrator.

Our mission is to simplify the payment and financial journey for your clients by offering powerful features through clean and flexible APIs.
With just a few lines of code, your platform can:

• 🏢 Create accounts and assign multiple merchants or wallets
• 💳 Process payments via credit card, Pix, and other methods
• 🔐 Manage 3DS authentication flows
• 🛡️ Integrate antifraud (AF) logic into the payment pipeline
• 🔁 Orchestrate transactions across multiple payment providers
• 📬 Receive webhooks and track status changes in real time
• 💸 Handle refunds and chargebacks
• 📊 Monitor operations through our Metabase dashboard, including:
  • ✅ Transaction volume
  • ⚠️ Chargeback rate
  • 📈 Approval rate

This documentation provides everything you need to get started, including available modules and endpoints.
You can integrate with browser apps, mobile apps, or internal backend systems.

🏦 Who We Are

We are a fintech infrastructure provider focused on enabling payments and credit flows via APIs.
With core-manager, we handle the complex layers — acquirers, gateways, compliance — so your team can focus on the product experience.

🚀 Getting Started

To begin using our platform, you’ll need Partner Access Credentials.

🔐

Partner Registration Required
Please contact our onboarding team at [email protected] to request your credentials.

Required details:

• CNPJ
• Company Name
• Trade Name
• Business Activity
• Contact Email
• Phone
• Responsible Person
• Platform URL

Once registered, you’ll receive client_id, client_secret, and entity identifiers to start integrating securely.

📘 Integration Guide

Choose the integration model that fits your platform:

1. 🔗 Host-to-Host (H2H) Integration — Full backend-to-backend control
2. 🧰 SDK Integration — Invisible frontend for card data & 3DS
3. 🌐 Checkout Page (Redirect) — Redirect your user to our hosted checkout

📚 API Reference

Looking for detailed endpoints, parameters, and examples?

👉 Explore the API Reference