> 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/general-parameters.md).

# General parameters

| Parameter | Value                                                                                                                                                                                                                                                                                                      | Description                                                                                                                                                                             |
| --------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| \_ctkn    | string                                                                                                                                                                                                                                                                                                     | <p>Activation key<br><strong>⚠️ Mandatory</strong><br>(To test in local, use bec6626e-8913-497d-9835-6e6ae9edb144)</p>                                                                  |
| type      | <p>web<br>popup<br>webview<br>direct-link</p>                                                                                                                                                                                                                                                              | Integration type                                                                                                                                                                        |
| lang      | <p>en<br>fr<br>de<br>it<br>es<br>pt</p>                                                                                                                                                                                                                                                                    | Display language                                                                                                                                                                        |
| mode      | dark                                                                                                                                                                                                                                                                                                       | If used, switches the UI theme to dark mode.                                                                                                                                            |
| tab       | <p>buy<br>sell<br>swap</p>                                                                                                                                                                                                                                                                                 | Active tab by default                                                                                                                                                                   |
| tabs      | <p>buy<br>sell<br>swap</p>                                                                                                                                                                                                                                                                                 | Allowed tabs.                                                                                                                                                                           |
| rfr       | string                                                                                                                                                                                                                                                                                                     | Your referral code (see [Revenue sharing](/service-information/revenue-sharing.md))                                                                                                     |
| phone     | integer                                                                                                                                                                                                                                                                                                    | Pre-fills the user's mobile phone number during the login step. Enter it as numbers that begin with the country code. Example : phone=41791234567 for the phone number +41 79 123 45 67 |
| ctry      | <p>ISO alpha-2 country code:<br>CH<br>FR<br>DE<br>...</p>                                                                                                                                                                                                                                                  | Sets the default country code displayed at the phone number input step. If not used, the country code is automatically selected based on the user's detected timezone.                  |
| net       | <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> | Default network                                                                                                                                                                         |
| nets      | <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> | List of authorized networks (leave empty for all).                                                                                                                                      |

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


---

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