> For the complete documentation index, see [llms.txt](https://developer.convergegate.com/legacy/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.convergegate.com/legacy/card-server-to-server.md).

# Card (server to server)

- [Overview](https://developer.convergegate.com/legacy/card-server-to-server/overview.md): API INTEGRATION GUIDE (v 1.12.0)
- [Authentication](https://developer.convergegate.com/legacy/card-server-to-server/overview/authentication.md)
- [Process Flow](https://developer.convergegate.com/legacy/card-server-to-server/overview/process-flow.md)
- [API Endpoints](https://developer.convergegate.com/legacy/card-server-to-server/overview/api-endpoints.md)
- [Testing](https://developer.convergegate.com/legacy/card-server-to-server/overview/testing.md)
- [API Commands](https://developer.convergegate.com/legacy/card-server-to-server/api-commands.md): API INTEGRATION GUIDE (v 1.12.0)
- [700 – Start Credit Card charge (3DS Enabled)](https://developer.convergegate.com/legacy/card-server-to-server/api-commands/700-start-credit-card-charge-3ds-enabled.md)
- [701 – Request Capture Authorization](https://developer.convergegate.com/legacy/card-server-to-server/api-commands/701-request-capture-authorization.md): Allows the merchant to submit a request to capture an authorized only transaction previously submitted and approved using the 700 command.
- [702 – Request Cancel Authorization](https://developer.convergegate.com/legacy/card-server-to-server/api-commands/702-request-cancel-authorization.md): Allows the merchant to submit a request to cancel an authorized only transaction previously submitted and approved using the 700 command.
- [708 – Check transaction details](https://developer.convergegate.com/legacy/card-server-to-server/api-commands/708-check-transaction-details.md): Returns current transaction details including rebill child transactions.
- [709 – Check transaction status](https://developer.convergegate.com/legacy/card-server-to-server/api-commands/709-check-transaction-status.md): Returns current transaction state. Optionally sends Notification 850.
- [720 – Credit Request](https://developer.convergegate.com/legacy/card-server-to-server/api-commands/720-credit-request.md): Allows the merchant to submit a request for credit to the cardholder’s Credit Card.
- [756 – Manual Rebill Request](https://developer.convergegate.com/legacy/card-server-to-server/api-commands/756-manual-rebill-request.md): Allows the merchant to manually request the execution of the Rebill and follow-up transaction when authorized by Merchant Agreement and indicated in the Merchant Profile.
- [760 – Request Refund](https://developer.convergegate.com/legacy/card-server-to-server/api-commands/760-request-refund.md): Allows the merchant to submit a refund request.
- [Notifications](https://developer.convergegate.com/legacy/card-server-to-server/notifications.md): API INTEGRATION GUIDE (v 1.12.0)
- [Notifications](https://developer.convergegate.com/legacy/card-server-to-server/notifications/notifications.md)
- [850 – Transaction state Notification](https://developer.convergegate.com/legacy/card-server-to-server/notifications/850-transaction-state-notification.md)
- [860 – Refund Notification](https://developer.convergegate.com/legacy/card-server-to-server/notifications/860-refund-notification.md): Notifies the merchant about the result of a submitted refund.
- [880 – Dispute Notification](https://developer.convergegate.com/legacy/card-server-to-server/notifications/880-dispute-notification.md): Notifies the merchant about disputes to transaction.
- [Transaction Status Codes](https://developer.convergegate.com/legacy/card-server-to-server/transaction-status-codes.md)
- [3D Secure Integration](https://developer.convergegate.com/legacy/card-server-to-server/3d-secure-integration.md)