> 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/filecoin-fil/native-api/filecoin_version.md).

# Filecoin.Version - Filecoin

Example code for the Filecoin.Version JSON RPC method. Complete guide on how to use Filecoin.Version JSON RPC in GetBlock Web3 documentation.

This method returns the version of the node software, its API version, and the block delay (epoch duration) of the network.

## Parameters

This method does not accept any parameters. Pass an empty array.

## Request

{% tabs %}
{% tab title="cURL" %}
{% code overflow="wrap" %}

```bash
curl --location --request POST 'https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/' \
--header 'Content-Type: application/json' \
--data-raw '{"jsonrpc": "2.0", "method": "Filecoin.Version", "params": [], "id": "getblock.io"}'
```

{% endcode %}
{% endtab %}

{% tab title="JavaScript" %}
{% code title="example.js" %}

```javascript
const response = await fetch('https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/', {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify({
        jsonrpc: '2.0',
        method: 'Filecoin.Version',
        params: [],
        id: 'getblock.io'
    })
});

const data = await response.json();
console.log(data.result);
```

{% endcode %}
{% endtab %}

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

```python
import requests

response = requests.post(
    'https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/',
    headers={'Content-Type': 'application/json'},
    json={
        'jsonrpc': '2.0',
        'method': 'Filecoin.Version',
        'params': [],
        'id': 'getblock.io'
    }
)

print(response.json()['result'])
```

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

## Response

```json
{
    "jsonrpc": "2.0",
    "id": "getblock.io",
    "result": {
        "Version": "1.28.0+mainnet",
        "APIVersion": 131840,
        "BlockDelay": 30
    }
}
```

## Response Parameters

| Field      | Type    | Description                               |
| ---------- | ------- | ----------------------------------------- |
| Version    | string  | Node software version string              |
| APIVersion | integer | Encoded node API version                  |
| BlockDelay | integer | Epoch duration in seconds (30 on mainnet) |

## Use Cases

* **Node Diagnostics**: Identify the node version
* **Compatibility Checks**: Confirm the API version is supported
* **Timing**: Read the block delay for epoch-based logic
* **Support Reports**: Include the node version in a report

## Error Handling

| Error Code | Message         | Description                                                 |
| ---------- | --------------- | ----------------------------------------------------------- |
| -32602     | Invalid params  | A parameter is missing or has the wrong type or format      |
| 1          | Actor not found | The address or actor does not exist in the requested tipset |
| -32603     | Internal error  | The node failed to process the request                      |