# eth\_getCode - Mantle

This method returns code at a given address on the Mantle network.

### Parameters

| Parameter      | Type   | Description                                             |
| -------------- | ------ | ------------------------------------------------------- |
| address        | string | 20-byte contract address                                |
| blockParameter | string | Block number in hex, or "latest", "earliest", "pending" |

### Request

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

```bash
curl --location --request POST 'https://go.getblock.io/<ACCESS-TOKEN>/' \
--header 'Content-Type: application/json' \
--data-raw '{
    "jsonrpc": "2.0",
    "method": "eth_getCode",
    "params": ["0x201EBa5CC46D216Ce6DC03F6a759e8E766e956aE", "latest"],
    "id": "getblock.io"
}'
```

{% endtab %}

{% tab title="JavaScript" %}

```javascript
import axios from 'axios';

const data = JSON.stringify({
    "jsonrpc": "2.0",
    "method": "eth_getCode",
    "params": ["0x201EBa5CC46D216Ce6DC03F6a759e8E766e956aE", "latest"],
    "id": "getblock.io"
});

const config = {
    method: 'post',
    url: 'https://go.getblock.io/<ACCESS-TOKEN>/',
    headers: {
        'Content-Type': 'application/json'
    },
    data: data
};

axios(config)
    .then(response => console.log(JSON.stringify(response.data)))
    .catch(error => console.log(error));
```

{% endtab %}

{% tab title="Python" %}

```python
import requests
import json

url = "https://go.getblock.io/<ACCESS-TOKEN>/"

payload = json.dumps({
    "jsonrpc": "2.0",
    "method": "eth_getCode",
    "params": ["0x201EBa5CC46D216Ce6DC03F6a759e8E766e956aE", "latest"],
    "id": "getblock.io"
})

headers = {
    'Content-Type': 'application/json'
}

response = requests.post(url, headers=headers, data=payload)
print(response.text)
```

{% endtab %}

{% tab title="Rust" %}

```rust
use reqwest::header;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let client = reqwest::Client::new();
    
    let response = client
        .post("https://go.getblock.io/<ACCESS-TOKEN>/")
        .header(header::CONTENT_TYPE, "application/json")
        .body(r#"{
            "jsonrpc": "2.0",
            "method": "eth_getCode",
            "params": ["0x201EBa5CC46D216Ce6DC03F6a759e8E766e956aE", "latest"],
            "id": "getblock.io"
        }"#)
        .send()
        .await?;
    
    println!("{}", response.text().await?);
    Ok(())
}
```

{% endtab %}
{% endtabs %}

### Response

```json
{
    "jsonrpc": "2.0",
    "id": "getblock.io",
    "result": "0x608060405234801561001057600080fd5b50..."
}
```

### Response Parameters

| Field   | Type   | Description                                 |
| ------- | ------ | ------------------------------------------- |
| jsonrpc | string | JSON-RPC protocol version ("2.0")           |
| id      | string | Request identifier matching the request     |
| result  | string | Contract bytecode (hex), or "0x" if no code |

### Use Case

The `eth_getCode` method is essential for:

* Contract verification
* Checking if address is a contract
* Smart contract analysis
* Security auditing
* Contract deployment verification
* Distinguishing EOA from contracts

### Error Handling

| Status Code | Error Message  | Cause                           |
| ----------- | -------------- | ------------------------------- |
| 403         | Forbidden      | Missing or invalid ACCESS-TOKEN |
| -32602      | Invalid params | Invalid address format          |

### Web3 Integration

{% tabs %}
{% tab title="Ethers.js" %}

```javascript
import { ethers } from 'ethers';

const provider = new ethers.JsonRpcProvider('https://go.getblock.io/<ACCESS-TOKEN>/');

const code = await provider.getCode('0x201EBa5CC46D216Ce6DC03F6a759e8E766e956aE');
console.log('Contract code:', code);
```

{% endtab %}

{% tab title="Viem" %}

```javascript
import { createPublicClient, http } from 'viem';
import { mantle } from 'viem/chains';

const client = createPublicClient({
    chain: mantle,
    transport: http('https://go.getblock.io/<ACCESS-TOKEN>/')
});

const code = await client.getCode({
    address: '0x201EBa5CC46D216Ce6DC03F6a759e8E766e956aE'
});
console.log('Contract code:', code);
```

{% 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.getblock.io/api-reference/mantle-mnt/eth_getcode-mantle.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.