# Reference

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Consult the [Merchant API](https://developers.payrexx.com/reference/rest-api#/) for more information.
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| Endpoint                                                                                             | NexGo | Description                                                      |
| ---------------------------------------------------------------------------------------------------- | ----- | ---------------------------------------------------------------- |
| **PAIRING**                                                                                          |       |                                                                  |
| [pair `GET`](https://developers.payrexx.com/reference/get-terminal-pairing#/)                        | ✅     | Gets the pairing status for a specific terminal by serial number |
| [pair `POST`](https://developers.payrexx.com/reference/pair-terminal#/)                              | ✅     | Pairs the terminal to the serialnumber for further processing    |
| [pair `DELETE`](https://developers.payrexx.com/reference/unpair-terminal#/)                          | ✅     | Frees the Terminal from the API pairing                          |
| **PAYMENT**                                                                                          |       |                                                                  |
| [payment `GET`](https://developers.payrexx.com/reference/get-terminal-payment#/)                     | ✅     | retrieves a POS-Terminal payment by id                           |
| [payment `POST`](https://developers.payrexx.com/reference/initiate-terminal-payment#/)               | ✅     | Sends a Payment request to the POS-Terminal                      |
| [payment/cancel `POST`](https://developers.payrexx.com/reference/cancel-terminal-payment#/)          | ✅     | Cancels an ongoing POS-Terminal payment by id                    |
| [payment/void `POST`](https://developers.payrexx.com/reference/void-terminal-payment#/)              | ✅     | Voids a past POS-Terminal payment by id                          |
| payment/refund `POST`                                                                                | ❌     | Refunds a POS-Terminal payment by id                             |
| **ADDITIONAL**                                                                                       |       |                                                                  |
| [paymentMethods `POST`](https://developers.payrexx.com/reference/get-pament-methods-from-terminal#/) | ✅     | retrieves payment options on the POS-Terminal                    |