> For the complete documentation index, see [llms.txt](https://developers.mtpelerin.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developers.mtpelerin.com/integration-guides/parameters-and-customization/on-ramp-parameters.md).

# On ramp parameters

| Parameter | Value                                                                                                                                                                                                                                                                                                      | Description                                                             |
| --------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------- |
| bsc       | *fiat codes*                                                                                                                                                                                                                                                                                               | Buy tab source currency                                                 |
| bdc       | *crypto codes*                                                                                                                                                                                                                                                                                             | Buy tab destination currency                                            |
| bsa       | number                                                                                                                                                                                                                                                                                                     | Buy tab source amount\*                                                 |
| bda       | number                                                                                                                                                                                                                                                                                                     | Buy tab destination amount\*                                            |
| curs      | *fiat codes*                                                                                                                                                                                                                                                                                               | List of authorized fiat currencies (leave empty for all)                |
| crys      | *crypto codes*                                                                                                                                                                                                                                                                                             | List of authorized cryptocurrencies (leave empty for all)               |
| dnet      | <p>arbitrum\_mainnet </p><p>avalanche\_mainnet<br>base\_mainnet<br>bitcoin\_mainnet<br>bsc\_mainnet<br>celo\_mainnet</p><p>lightning\_mainnet<br>mainnet<br>matic\_mainnet</p><p>optimism\_mainnet</p><p>rsk\_mainnet</p><p>sonic\_mainnet</p><p>tezos\_mainnet<br>xdai\_mainnet</p><p>zksync\_mainnet</p> | Destination network, for buy and swap tabs                              |
| pm        | card                                                                                                                                                                                                                                                                                                       | On the buy tab, pre-selects purchases by card / Google Pay / Apple Pay. |

\*If both source amount and destination amount parameters are used, the source amount parameter prevails.

**Fiat codes:** AUD, CAD, CHF, CZK, DKK, EUR, GBP, HKD, HUF, JPY, MXN, NOK, NZD, PLN, SEK, SGD, USD, ZAR

**Crypto codes:** AVAX, BNB, BTC, BTC.b, BTCB, cbBTC, CELO, crvUSD, DAI, ETH, EURC, frxUSD, GHO, LUSD, PAXG, POL, RBTC, RIF, S, sat, tzBTC, USDC, USDC.e, USDRIF, USDT, WBTC, WETH, XAUt, XDAI, XTZ, ZCHF

{% hint style="info" %}
&#x20;To add multiple values for a given parameter, simply separate them with a comma.
{% endhint %}


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