# Altitude Pay Payment Gateway Documentation

> API documentation for Altitude Pay Payment Gateway — card payments, 3D Secure, Google Pay, payouts, webhooks, and more.

## Get started
- [Overview](https://docs.altitudepay.solutions/index.html): Get started — credentials, obtaining an access token, UAT and production URLs, and choosing an integration
- [Environments](https://docs.altitudepay.solutions/getting-started/environments.html): API and authentication URLs for UAT and production environments
- [API Integration Guidelines](https://docs.altitudepay.solutions/getting-started/api-integration-guidelines.html): API integration guidelines — required headers (User-Agent, Content-Type), HTTPS, request hygiene, and 403 troubleshooting
- [AI-Assisted Integration](https://docs.altitudepay.solutions/getting-started/ai-assisted-integration.html): AI-assisted integration — llms.txt and llms-full.txt URLs for use with Claude, Cursor, GitHub Copilot, and other AI tools
## Get started › Authentication
- [Overview](https://docs.altitudepay.solutions/getting-started/authentication/): Authentication overview — OIDC client credentials flow
- [Obtain/Refresh Access Token](https://docs.altitudepay.solutions/getting-started/authentication/obtain-access-token.html): How to obtain and refresh OAuth2 access tokens
## Integrate
- [Hosted Payment Page](https://docs.altitudepay.solutions/integration-types/hosted-payment-page.html): Hosted payment page — redirect customers to a gateway-hosted checkout
- [Embedded Fields](https://docs.altitudepay.solutions/integration-types/embedded-fields.html): Embedded fields — drop-in card input components for your frontend
- [API Integration](https://docs.altitudepay.solutions/integration-types/api-integration.html): Direct API integration guide — server-to-server payment flow
## Integrate › Recipes
- [3DS Card Payment](https://docs.altitudepay.solutions/recipes/3ds-card-payment.html): Step-by-step recipe for a complete 3DS card payment integration
## Payment methods › Alternative
- [Overview](https://docs.altitudepay.solutions/references/payments/): Payment (deposit) methods overview
- [Direct API Integration](https://docs.altitudepay.solutions/references/payments/direct-api-integration.html): Direct API integration for payment deposits
## Payment methods › Cards
- [Cards](https://docs.altitudepay.solutions/references/cards/): Card payment authorization — request/response format, simulator, and status codes
- [Card Authorize](https://docs.altitudepay.solutions/references/cards/authorize.html): Card authorize endpoint — OpenAPI reference
- [Encryption example](https://docs.altitudepay.solutions/references/cards/encryption-example.html): RSA encryption examples for card data in multiple languages
- [3D Secure](https://docs.altitudepay.solutions/references/3ds/): 3D Secure authentication — fingerprint, challenge, redirect, and simulator flows
- [3DS Authentication Simulator](https://docs.altitudepay.solutions/references/3ds/simplified-simulator.html): Simplified 3DS authentication simulator — test card numbers for frictionless, redirect, form-submit and decline outcomes
- [Network Token](https://docs.altitudepay.solutions/references/network-token/): Network token payments — using provisioned card tokens with cryptograms
- [Network Token Authorize](https://docs.altitudepay.solutions/references/network-token/authorize.html): Network token authorize endpoint — OpenAPI reference
## Payment methods › Wallets
- [Google Pay](https://docs.altitudepay.solutions/references/google-pay/): Google Pay integration — token types, 3DS handling, and authorization
- [Apple Pay](https://docs.altitudepay.solutions/references/apple-pay/): Apple Pay integration — tokenization, branding obligations, and the available integration methods
- [Wallet Redirect](https://docs.altitudepay.solutions/references/wallet-redirect/): Wallet Redirect (Google Pay & Apple Pay) — PSP-hosted wallet redirect flow via google-pay-redirect and apple-pay-redirect payment method types
## Payment methods › Redirects
- [Bank Redirect](https://docs.altitudepay.solutions/references/bank-redirect/): Bank Redirect (Interac & Open Banking) — PSP-hosted bank redirect flow via interac-redirect and openbanking-redirect payment method types
- [Paysafe Redirect](https://docs.altitudepay.solutions/references/paysafe-redirect/): Paysafe redirect payment method overview
- [Paysafe Direct API Integration](https://docs.altitudepay.solutions/references/paysafe-redirect/direct-api-integration.html): Direct API integration for Paysafe redirect payments
- [Paysafe Customization Options](https://docs.altitudepay.solutions/references/paysafe-redirect/customization-options.html): UI customization options for Paysafe redirect pages
- [Neogated (BLIK)](https://docs.altitudepay.solutions/references/neogated/): Neogated (BLIK) payment method overview
- [Neogated Direct API Integration](https://docs.altitudepay.solutions/references/neogated/direct-api-integration.html): Direct API integration for BLIK payments
## Payouts › Non-card Payouts
- [Overview](https://docs.altitudepay.solutions/references/payout/): Payout overview — push funds to customers
- [Direct API Integration](https://docs.altitudepay.solutions/references/payout/direct-api-integration.html): Direct API integration for payouts
## Payouts › OCT (Original Credit Transaction)
- [Overview](https://docs.altitudepay.solutions/references/oct/): Original Credit Transaction (OCT) overview — push funds to a card
- [Authorize](https://docs.altitudepay.solutions/references/oct/authorize.html): OCT authorize endpoint — OpenAPI reference
## Payouts
- [Account Funding Transactions (AFT)](https://docs.altitudepay.solutions/references/aft/): Account Funding Transactions (AFT) — the options.funding object VISA and Mastercard require on authorize requests
## Operate › Transaction Management
- [Overview](https://docs.altitudepay.solutions/references/transaction-management/): Transaction management — capture, void, and refund operations
- [Manage transaction API](https://docs.altitudepay.solutions/references/transaction-management/manage-transaction-api.html): Manage transaction endpoint — OpenAPI reference
## Operate › Webhooks
- [Overview](https://docs.altitudepay.solutions/references/webhooks/): Webhook setup and signature verification
- [Transaction Processed Webhook](https://docs.altitudepay.solutions/references/webhooks/transaction-processed-webhook.html): Transaction processed webhook — payload format and fields
## Operate
- [Transaction Status API](https://docs.altitudepay.solutions/transaction-api/transaction-status-api.html): Transaction status endpoint — OpenAPI reference
- [Supported transaction statuses](https://docs.altitudepay.solutions/transaction-api/supported-transaction-statuses.html): All supported transaction statuses and their meanings
- [Handling Declines](https://docs.altitudepay.solutions/references/handling-declines/): Handling declines — processing_code reference and recommended mapping for decline handling
## Changelog
- [Changelog](https://docs.altitudepay.solutions/changelog.html): Documentation changelog — history of updates and additions