# URL Parameters

### Off-ramp URL[​](https://docs.fonbnk.com/docs/offramp/query-params#off-ramp-url) <a href="#off-ramp-url" id="off-ramp-url"></a>

| Environment | URL                                      |
| ----------- | ---------------------------------------- |
| Sandbox     | <https://sandbox-pay.fonbnk.com/offramp> |
| Production  | <https://pay.fonbnk.com/offramp>         |

### List of parameters[​](https://docs.fonbnk.com/docs/offramp/query-params#list-of-parameters) <a href="#list-of-parameters" id="list-of-parameters"></a>

Here is the list of parameters that can be added to the URL:

| Parameter       | Description                                                                                                                                                                                                                         |
| --------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| network         | Wallet network from which user will send crypto. Supported values: **POLYGON**, **AVALANCHE**, **CELO**, **ETHEREUM**                                                                                                               |
| asset           | Wallet asset from which user will send crypto. Supported values: **USDC**,**CUSD** depending on network. Supported network/asset pairs: AVALANCHE (USDC, USDT), POLYGON (USDC, USDT), CELO (CUSD, USDT, USDC), ETHEREUM(USDC, USDT) |
| amount          | If a currency is not provided, it will be an amount of crypto user wants to exchange. If currency is **local** it will be the amount of local currency user wants to receive.                                                       |
| offrampCurrency | Currency of the amount. Supported values: **usd** or **local**                                                                                                                                                                      |
| offrampType     | Type of the off-ramp: **bank**, **airtime**, **mobile\_money**, **paybill**                                                                                                                                                         |
| country         | default selected country iso code, example: **KE** for Kenya, **NG** for Nigeria                                                                                                                                                    |
| currencyIso     | currency iso code, example: **KES** for Kenya, **NGN** for Nigeria. Acts like a country parameter.                                                                                                                                  |
| freezeAmount    | Freezes the amount of order for the user, the user will not be able to change it. The amount is required in the URL for this parameter to work.                                                                                     |
| freezeWallet    | Freezes the wallet of order for the user, the user will not be able to change it. The wallet is required in the URL for this parameter to work.                                                                                     |
| orderParams     | This parameter will be sent to a merchant webhook with order status changes                                                                                                                                                         |
| source          | parameter used to match an order to a merchant                                                                                                                                                                                      |
| hideSwitch      | if present, hides Buy/Sell switch at the top                                                                                                                                                                                        |