> For the complete documentation index, see [llms.txt](https://docs.validationcloud.io/v1/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.validationcloud.io/v1/tron/tron-full-node-http-api/dex-exchange/exchangecreate.md).

# ExchangeCreate

Creates a trading pair.

This method will use `30` [Compute Units](/v1/about/billing.md).

***

{% hint style="danger" %}

#### Warning!

Successful execution, signing, and broadcast of this API call will deduct 1024 TRX from the user's account.
{% endhint %}

## **Parameters**

* `owner_address` - String - Address of the transaction creator
* `first_token_id` - String - The first token's id, default hexString
* `first_token_balance` - String - The first token's balance
* `second_token_id` - String - The second token's id, default hexString
* `second_token_balance` - String - The second token's balance
* `permission_id` - int32 - Optional, for multi-signature use
* `visible` - boolean - Optional. Specifies whether the address is in Base58 format (default: false)

## **Returns**

Transaction object - JSON object: Unsigned transaction, please refer to the [Transaction](https://developers.tron.network/docs/tron-protocol-transaction) chapter for the fields contained in it. Since the transaction type is `ExchangeCreateContract`, the fields contained in `raw_data.contract[0].parameter.value` in the transaction are as follows:

| Field                  | Type   | Description          |
| ---------------------- | ------ | -------------------- |
| owner\_address         | string | Account address      |
| first\_token\_id       | string | First token id       |
| first\_token\_balance  | int64  | First token balance  |
| second\_token\_id      | string | Second token id      |
| second\_token\_balance | int64  | Second token balance |

{% tabs %}
{% tab title="mainnet" %}

```bash
curl https://mainnet.tron.validationcloud.io/v1/<YOUR_API_KEY_HERE>/wallet/exchangecreate \
    -X POST \
    -H "Content-Type: application/json" \
    -d '
{
  "owner_address": "TZ4UXDV5ZhNW7fb2AMSbgfAEZ7hWsnYS2g",
  "first_token_id": "31303030343837",
  "first_token_balance": 100,
  "second_token_id": "31303030303031",
  "second_token_balance": 100,
  "visible": true
}
'
```

{% endtab %}
{% endtabs %}