> ## Documentation Index
> Fetch the complete documentation index at: https://developers.pcibooking.net/llms.txt
> Use this file to discover all available pages before exploring further.

# Use Tokens API Reference

> API endpoints for processing cards: Universal Payment Gateway transactions, token replacement, card display, and FTPS/sFTP file transfer

API endpoints for using stored card tokens. For concepts and guidance, see the [Use Tokens guide](/use-tokens/overview).

## Token Replacement

| Endpoint                                                                          | Description                                                        |
| --------------------------------------------------------------------------------- | ------------------------------------------------------------------ |
| [Token Replacement](/api-reference/process-cards/token-replacement)               | Replace tokens with card data in HTTP requests to any third party. |
| [Token Replacement via SFTP](/api-reference/process-cards/token-replacement-sftp) | Replace tokens in batch files uploaded via SFTP.                   |
| [Token Replacement via FTPS](/api-reference/process-cards/token-replacement-ftps) | Replace tokens in batch files uploaded via FTPS.                   |

## Payment Gateway

| Endpoint                                                                  | Description                                                  |
| ------------------------------------------------------------------------- | ------------------------------------------------------------ |
| [Universal Payment Gateway](/use-tokens/universal-payment-gateway)        | Overview of gateway processing through PCI Booking.          |
| [Process Transaction](/api-reference/process-cards/process-transaction)   | Submit a charge, pre-auth, capture, refund, or void.         |
| [Get Payment Gateways](/api-reference/process-cards/get-payment-gateways) | List all supported payment gateways.                         |
| [Gateway Guidance](/api-reference/process-cards/gateway-guidance)         | Troubleshooting and best practices for gateway integrations. |

## Gateway Credentials

| Endpoint                                                                                    | Description                                     |
| ------------------------------------------------------------------------------------------- | ----------------------------------------------- |
| [Credentials Management](/account-setup/gateway-credentials)                                | Overview of gateway credential operations.      |
| [Retrieve Credential Structure](/api-reference/process-cards/retrieve-credential-structure) | Get the required fields for a specific gateway. |
| [Store Credentials](/api-reference/process-cards/store-credentials)                         | Save gateway credentials to your account.       |
| [List Credentials](/api-reference/process-cards/list-credentials)                           | List all stored gateway credentials.            |
| [Delete Credentials](/api-reference/process-cards/delete-credentials)                       | Remove gateway credentials from your account.   |

## Card Display

| Endpoint                                                                    | Description                                         |
| --------------------------------------------------------------------------- | --------------------------------------------------- |
| [Card Display Form](/api-reference/process-cards/request-card-display-form) | Render card details in a secure iframe.             |
| [Card Display with OTP](/api-reference/process-cards/card-display-otp)      | Send a secure card view link with OTP verification. |

## Retrieve Raw Card Data

| Endpoint                                                                    | Description                                                                   |
| --------------------------------------------------------------------------- | ----------------------------------------------------------------------------- |
| [Retrieve Card Details](/api-reference/manage-tokens/retrieve-card-details) | Retrieve full, unmasked card data via API. Puts your system in PCI DSS scope. |
| [Risk Assessment](/api-reference/manage-tokens/risk-assessment)             | Analyze a card for fraud risk indicators before using the token.              |