# is-fast-blocks (/docs/query/is-fast-blocks)

**Category:** Chain

## Parameters [#parameters]

This read takes no parameters.

## CLI [#cli]

```bash
btcli query is-fast-blocks --json
```

## Python [#python]

Typed namespace method (autocomplete, signature help):

```python
import bittensor as sub

async with sub.Client("finney") as client:
    result = await client.chain.is_fast_blocks()
```

Or dispatch by name, as an agent would:

```python
result = await client.read("is_fast_blocks")
```