> ## Documentation Index
> Fetch the complete documentation index at: https://docs.onboard.xyz/llms.txt
> Use this file to discover all available pages before exploring further.

# Query Parameters

Onboard Connect allows you to customize your users' trading experience by embedding specific trade parameters within the redirect link's query parameters. The table below describes these parameters.

| Param          | Type                | Required    | Description                                                                                                                                                                                                                                                                                                |
| -------------- | ------------------- | ----------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| tradeType      | `String`            | Yes         | Specify the type of order you want to initiate.<br /><br />**Available options:**<br />  `Buy` (onramp) or `Sell` (offramp)                                                                                                                                                                                |
| fiat           | `String`            | Yes         | ISO code alpha 3 that specifies the fiat currency for the trade.<br /><br />Use the [trade options endpoint](/onboard-exchange/connect/api-examples#trade-options) to get the list of available fiat currencies                                                                                            |
| token          | `String`            | Yes         | Token symbol for the crypto asset to be traded.<br /><br />Use the [trade options endpoint](/onboard-exchange/connect/api-examples#trade-options) to get the list of available tokens.                                                                                                                     |
| fiatAmount     | `Number`            | Conditional | Amount to be traded,, expressed in its fiat value.<br /><br /> Either one of `fiatAmount` or `tokenAmount` **must be provided**.                                                                                                                                                                           |
| tokenAmount    | `Number`            | Conditional | Amount to be traded, expressed in its crypto value.<br /><br />  Either one of `fiatAmount` or `tokenAmount` **must be provided**.                                                                                                                                                                         |
| networkId      | `String`            | Yes         | The blockchain network identifier or chain ID for the trade.<br /><br /> Use the [trade options endpoint](/onboard-exchange/connect/api-examples#trade-options) to get the list of available networks.                                                                                                     |
| paymentChannel | `String`            | No          | The preferred payment channel for the trade.<br /><br /> Use the [trade options endpoint](/onboard-exchange/connect/api-examples#trade-options) to get the list of supported payment channels.                                                                                                             |
| address        | `String`            | No          | The blockchain address to be credited with token for `Buy` (onramp) trades.<br /><br /> If not provided, the customer will be required to connect their wallet to complete the trade.<br /><br />For `Sell` (offramp) trades, users are always required to connect their wallets if not already connected. |
| email          | `String`            | No          | Your customer's email address.                                                                                                                                                                                                                                                                             |
| orderId        | `Number` / `String` | No          | Unique ID that enables you track the order easily on your platform.<br /><br /> This ID maps to the `thirdPartyInfo.externalOrderReference` property within the [webhook payload](/onboard-exchange/connect/webhooks#order-state-transition).                                                              |
| autoselect     | `Boolean`           | No          | Provide this flag to indicate if the best offer should be selected, or if a list of offers matching your trade parameters should be returned.<br /><br />Defaults to `true`.                                                                                                                               |