> For the complete documentation index, see [llms.txt](https://docs.getblock.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.getblock.io/api-reference/celo/eth_getcode-celo.md).

# eth\_getCode - Celo

This method returns the bytecode stored at a given address on the Celo network. This is useful for verifying contract deployments and distinguishing between EOAs (Externally Owned Accounts) and contract accounts.

## Parameters

| Parameter   | Type   | Required | Description                                             |
| ----------- | ------ | -------- | ------------------------------------------------------- |
| address     | string | Yes      | Contract address to query                               |
| blockNumber | string | Yes      | Block number in hex, or "latest", "earliest", "pending" |

## Request Example

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

```bash
curl -X POST https://go.getblock.io/<ACCESS-TOKEN>/ \
-H "Content-Type: application/json" \
-d '{
  "jsonrpc": "2.0",
  "id": "getblock.io",
  "method": "eth_getCode",
  "params": [
    "0x765DE816845861e75A25fCA122bb6898B8B1282a",
    "latest"
  ]
}'
```

{% endcode %}
{% endtab %}

{% tab title="JavaScript (Axios)" %}
{% code title="request.js" %}

```javascript
const axios = require('axios');

const url = 'https://go.getblock.io/<ACCESS-TOKEN>/';

// Query cUSD contract bytecode
const payload = {
  jsonrpc: '2.0',
  id: 'getblock.io',
  method: 'eth_getCode',
  params: [
    '0x765DE816845861e75A25fCA122bb6898B8B1282a', // cUSD contract
    'latest'
  ]
};

axios.post(url, payload, {
  headers: { 'Content-Type': 'application/json' }
})
.then(response => console.log(response.data))
.catch(error => console.error(error));
```

{% endcode %}
{% endtab %}

{% tab title="Python" %}
{% code title="request.py" %}

```python
import requests
import json

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

payload = {
    "jsonrpc": "2.0",
    "id": "getblock.io",
    "method": "eth_getCode",
    "params": [
        "0x765DE816845861e75A25fCA122bb6898B8B1282a",
        "latest"
    ]
}

response = requests.post(url, headers={"Content-Type": "application/json"}, json=payload)
print(response.json())
```

{% endcode %}
{% endtab %}
{% endtabs %}

## Response Example

{% code title="response.json" %}

```json
{
  "jsonrpc": "2.0",
  "id": "getblock.io",
  "result": "0x608060405234801561001057600080fd5b50600436106100..."
}
```

{% endcode %}

## Response Definition

| Field  | Type   | Description                     |
| ------ | ------ | ------------------------------- |
| result | string | Contract bytecode as hex string |

## Use Cases

* Verify contract deployment
* Check if address is a contract or EOA
* Analyze contract bytecode
* Validate proxy implementations

## Error Handling

| Error Code | Description                             |
| ---------- | --------------------------------------- |
| -32602     | Invalid params - malformed address      |
| -32603     | Internal error - node processing issues |

## SDK Integration

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

```javascript
const { ethers } = require('ethers');

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

const code = await provider.getCode('0x765DE816845861e75A25fCA122bb6898B8B1282a');
console.log(code);
console.log('Is contract:', code !== '0x');
```

{% endcode %}
{% endtab %}

{% tab title="ContractKit" %}
{% code title="contractkit.js" %}

```javascript
const { newKit } = require('@celo/contractkit');

const kit = newKit('https://go.getblock.io/<ACCESS-TOKEN>/');

const code = await kit.web3.eth.getCode('0x765DE816845861e75A25fCA122bb6898B8B1282a');
console.log(code);
```

{% endcode %}
{% endtab %}
{% endtabs %}


---

# Agent Instructions
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## 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, and the optional `goal` query parameter:

```
GET https://docs.getblock.io/api-reference/celo/eth_getcode-celo.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

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