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Developers · Appmax

Integrate high-performance payment infrastructure. Your way, in your stack.

Appmax offers three integration paths: connect your platform in one click, integrate via the App Store with full documentation, or build your own app.

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Code or no-code

From plug-and-play to full customization

No matter the complexity of your operation — whether an e‑commerce platform, SaaS, info-product or custom marketplace — Appmax has the technology built for you.

API

One API. The full Appmax payment infrastructure.

The Appmax App Store is designed for developers who need full control, with well-defined endpoints, predictable responses and speed to integrate payments.

Create account

  • Payments

    Transaction processing via credit card, Pix and boleto. Configure installments, retry logic and more.

    charge.json
    POST /v1/charges201 Created
    // valor da cobrança R$ 250,00
    cartãoPixboleto
    12x sem juros aprovado

  • Recurring billing

    Create and manage subscription plans and customer recovery logic.

    subscription.json
    POST /v1/subscriptions201 Created
    // assinatura ativa Plano Pro · R$ 49,00/mês
    4 5 6
    3 ciclos pagos próxima cobrança · 12/06

  • Payment split

    Configure receivables split rules by percentage or fixed amount at order creation, via Pix, card or boleto. Manage multiple recipients, reconcile payments and query flows via API.

    split.response.json
    POST /v1/orders201 Created
    // valor da transação R$ 1.500,00
    conta_principal 70% R$ 1.050,00
    comissionado 30% R$ 450,00

  • Anti-fraud

    With Appmax technology, every transaction goes through a real-time risk score analysis.

    risk.evaluate
    POST /v1/risk/evaluate200 OK
    // score de risco · tempo real
    0/100
    • device fingerprintok
    • velocity checkok
    • behavior patternok
    decision: APPROVE

  • Tokenization

    Appmax tokenizes cards on the first transaction and uses the token for repurchases, recurring charges and upsell without friction, without storing sensitive data in your infrastructure.

    tokenize.json
    POST /v1/tokens201 Created
    VISA •••• •••• •••• 4242
    ↓
    // token seguro tok_9f2a8c4e1b
    recompra · recorrência · upsellPCI

  • Webhooks

    Receive real-time notifications for any payment lifecycle event: approval, decline, chargeback and refund. Configure endpoints per event or per operation.

    webhooks.log
    listening /v1/webhooks● live
    • payment.approved200
    • chargeback.created200
    • refund.processed200
    • payout.settled200
    retry automático · backoff exponencial

  • International sales

    Process transactions across multiple countries with a single integration. Your customer pays in local currency, and your operation receives in BRL.

    charge.create
    POST /v1/charges200 OK
    cliente paga 🇺🇸 USD $ 100.00
    →
    você recebe 🇧🇷 BRL R$ 520,00
    USDEURGBPMXN+ 40

  • Payment link

    Create payment links with different installment options, seller management and traceability.

    payment-link.json
    POST /v1/payment-links201 Created
    // link gerado
    pay.appmax.com/l/x7Kp9Q
    12x sem jurosPix · cartão
sandbox — bash
$ appmax sandbox --simulate
  • ✓ payment.approved118ms
  • ✓ payment.declined96ms
  • ✓ chargeback.created104ms
  • ✓ webhook.delivered200
› 4 passed · 0 failed sandbox
DX

Production-ready. Fast to test.

  • Full documentation App Store reference with all endpoints documented, request/response examples, authentication guides and common use cases.
  • Test your integration Use the sandbox to test without moving real money. Simulate approvals, declines, chargebacks and webhooks before going live.
  • Reliable webhooks Configure real-time notifications for each payment cycle event. Automatic retry ensures no event is lost.
  • Technical support Technical team available for integration questions, implementation review and troubleshooting. Support in Portuguese for Brazilian operations.
  • Changelog Track all API updates (new endpoints, behavior changes and deprecations) before they reach production.
Access full documentation
Use cases

Use cases the API solves

  • Custom e‑commerce

    Integrate payments directly into your frontend with an optimised checkout: card, Pix and boleto in the same flow, with automatic anti-fraud and retry.

  • Operations with split

    Configure receivables split rules at order creation. Register recipients via API with registered KYC.

  • SaaS with recurring billing

    Create subscription plans, manage billing cycles, handle payment failures automatically via API, without relying on a manual interface.

  • App with tokenization

    Tokenize the card on the first transaction and use the token for future charges: one-click repurchase, post-sale upsell and recurring billing without checkout friction.

  • International operation

    Process payments across multiple countries with a single integration. AI-powered anti-fraud adapted to each market, with settlement in BRL.

Plug-and-play

Your platform, our infrastructure. In minutes.

Install the connector, set up your credentials and start processing. No coding, no complex configuration. Native integrations already include technologies like anti-fraud, retry logic and recovery built in.

E-commerce
Shopify
VTEX
Uappi
Tray
Nuvemshop
Yampi
WX3
Wake
Linx Commerce
Loja Integrada
Olist
Jet
Shoppub
Bagy
Irroba
WooCommerce
Magento
wBuy
LPQV
Moovin
Visual E-commerce
Checkout & Info-products
Digital Manager Guru
Astron Members
The Members
EAD Plataforma
ERP, Management & Sales
Bling
Hotzapp
SAK
Apollo
Notazz
Marketing & CRM
ActiveCampaign
RD Station
HubSpot
Taboola
Bing Ads
Criteo
GA4
Google Ads
Outbrain
Meta
LeadLovers
Notificações Inteligentes
OptimizePress
Appmax App Store

Build with Appmax. Distribute to thousands of sellers.

The Appmax App Store is the marketplace of applications built for the Appmax payment infrastructure. Develop an app to solve a specific problem and distribute it to the entire seller base.

Why build an app on Appmax
  • Access to the seller base distribute your app to thousands of active merchants on Appmax.
  • Ready payment infrastructure you focus on the problem you solve. Appmax handles processing, anti-fraud and settlement.
  • API as the foundation your app accesses the full power of the App Store (payments, recurring, split, tokenization, webhooks) without building anything from scratch.
  • Integrated distribution sellers install your app directly from the Appmax dashboard, with streamlined onboarding and pre-configured credentials.
Appmax App Store
  • Conciliador Pro Financeiro Instalar
  • ERP Connect Integração Instalar
  • Checkout Express Checkout Instalado
What you can build
  • Connectors with ERPs, CRMs and non-native e‑commerce platforms
  • Custom financial reporting and reconciliation tools
  • Specialised checkout solutions for specific verticals
  • Integrations with logistics, tax and accounting tools
Access the App Store → Publish my app →

Appmax Ambassadors

  • Attekita Uncle Bob PAROU de revisar código gerado por IA. E esse é o motivo.

  • Código Fonte TV PROGRAMADOR NO MEI PODE REALMENTE ACONTECER

  • Hora de Codar oh-my-opencode-slim é INSANO: 7 IAs se dividindo sozinhas no meu projeto

  • Lucas Montano o novo 80/20 do desenvolvimento de software (RFCs)

  • Mano Deyvin A VERDADE SOBRE SER DEV EM 2026 | O QUE A PESQUISA SALARIAL ESCANCAROU

Frequently asked questions about Appmax integration

  • Yes. Appmax provides a complete sandbox environment to test your entire integration before going live, including simulated approvals, declines, chargebacks and webhook dispatches.

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Ready to integrate?

Complete documentation, available test environment, specialised technical support. Everything you need to integrate Appmax into your stack, from the first test to production.

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