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

# ExchangeInject

Injects capital into the transaction. The purpose of injecting capital into the trading pair is to prevent price fluctuation from affecting the transaction.

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

***

## **Parameters**

* `owner_address` - String - Address of the transaction creator
* `exchange_id` - int32 - Transaction Pair ID
* `token_id` - String - Token ID; usually is the token name, which needs to be in hexString format
* `quant` - int32 - Number of capital injection tokens
* `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 `ExchangeInjectContract`, the fields contained in `raw_data.contract[0].parameter.value` in the transaction are as follows:

| Field | Type | Description |
| - | - | - |
| owner\_address | string | Account address |
| exchange\_id | int64 | Exchange id |
| token\_id | string | The id of the token to be injected |
| quant | int64 | The amount of tokens to be injected |

<CodeGroup>
  ```bash title="mainnet" theme={"theme":{"light":"github-light","dark":"github-dark-default"}}
  curl https://mainnet.tron.validationcloud.io/v1/<YOUR_API_KEY_HERE>/wallet/exchangeinject \
      -X POST \
      -H "Content-Type: application/json" \
      -d '
  {
    "owner_address": "TZ4UXDV5ZhNW7fb2AMSbgfAEZ7hWsnYS2g",
    "exchange_id": 12,
    "token_id": "31303030343837",
    "quant": 100,
    "visible": true
  }
  '
  ```
</CodeGroup>


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