# Send Contract

## Request

Similar to [send contract](/developer-docs/api/erc20-transfer-example.md) on EVM, this is use to [update a smart contract](https://docs.sui.io/guides/developer/sui-101/building-ptb#available-transactions) object.

Parameters

* `chain` - `mainnet` `testnet` `devnet` `localnet`
* target - Target object interact with
* `args` - An array of arguments

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

```bash
curl --location 'localhost:9680/sui/sendContract' \
--header 'Content-Type: application/json' \
--data '{
    "chain": "testnet",
    "target": "0x5f1cbf91020e986d82493bbb8d0efab99c848d5e5fa1eec71faf2db725e2c5f7::counter::increment",
    "args": ["0xa1fc3811720a381e2d55cc620c5514116c5254e2bdc72fda2af341fd0998029a"]
}'
```

{% endtab %}

{% tab title="Unity" %}

```csharp
using System.Collections;
using UnityEngine;
using UnityEngine.Networking;

public class GetAccounts: MonoBehaviour
{
    void Start()
    {
        StartCoroutine(Accounts());
    }

    private IEnumerator Accounts()
    {
        string jsonString = "{ \"chain\": \"testnet\", \"target\": \"0x5f1cbf91020e986d82493bbb8d0efab99c848d5e5fa1eec71faf2db725e2c5f7::counter::increment\", \"args\": [\"0xa1fc3811720a381e2d55cc620c5514116c5254e2bdc72fda2af341fd0998029a\"] }";
        
        byte[] jsonBytes = System.Text.Encoding.UTF8.GetBytes(jsonString);

        UnityWebRequest request = new UnityWebRequest("localhost:9680/sui/sendContract", "POST");
        request.uploadHandler = new UploadHandlerRaw(jsonBytes);
        request.downloadHandler = new DownloadHandlerBuffer();
        request.SetRequestHeader("Content-Type", "application/json");

        yield return request.SendWebRequest();
        Debug.Log(request.error);
        Debug.Log(request.downloadHandler.text);
    }
}
```

{% endtab %}
{% endtabs %}

## Response

The transaction hash

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

```html
GKnKZHuZoR9uvSbwXvu81nAWJ9PKhkaGouR6CCnXMabt
```

{% endtab %}

{% tab title="Error" %}

```
{
  "message": "error description here"
}
```

{% endtab %}
{% endtabs %}


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.hyperplay.xyz/developer-docs/api-1/sui-blockchain/send-contract.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.