# API list

> This section introduces the APIs that are used in Alipay+ User-presented Mode Payment and must be integrated by Acquirer.

This section introduces the APIs that are provided in Alipay+ User-presented Mode Payment.

## APIs

The following table lists the APIs in terms of category, endpoint, and calling direction. You can click the interface name to see the detailed specification of each API.

| **Category** | **Interface name** | **Endpoint** | **Direction** |
| --- | --- | --- | --- |
| Payment | [pay](../api_acq_tile/pay_user_presented_mode.md) | /aps/api/v1/payments/pay | ACQP > Alipay+ |
| Payment | [inquiryPayment](../api_acq_tile/inquiry_payment.md) | /aps/api/v1/payments/inquiryPayment | ACQP > Alipay+ |
| Payment | [cancelPayment](../api_acq_tile/cancel_payment.md) | /aps/api/v1/payments/cancelPayment | ACQP > Alipay+ |
| Payment | [refund](../api_acq_tile/refund.md) | /aps/api/v1/payments/refund | ACQP > Alipay+ |
| Payment | [notifyPayment](../api_acq_tile/notify_payment.md) | N/A | Alipay+ > ACQP |
| Registration | [registration](../api_acq_tile/registration.md) | /aps/api/v1/merchants/registration | ACQP > Alipay+ |
| Registration | [inquiryRegistrationStatus](../api_acq_tile/inquiry_registration_status.md) | /aps/api/v1/merchants/inquiryRegistrationStatus | ACQP > Alipay+ |
| Registration | [notifyRegistrationStatus](../api_acq_tile/notify_registration_status.md) | N/A | Alipay+ > ACQP |
| Dispute | [responseRetrieval](../api_acq_tile/response_retrieval.md) | /aps/api/v1/disputes/responseRetrieval | ACQP > Alipay+ |
| Dispute | [responseEscalation](../api_acq_tile/response_escalation.md) | /aps/api/v1/disputes/responseEscalation | ACQP > Alipay+ |
| Dispute | [initiateRetrieval](../api_acq_tile/initiate_retrieval.md) | N/A | Alipay+ > ACQP |
| Dispute | [initiateEscalation](../api_acq_tile/initiate_escalation.md) | N/A | Alipay+ > ACQP |