# subnet-registration-cost (/docs/query/subnet-registration-cost)

Denominated in TAO. The cost is dynamic: it rises when subnets register
and decays back down over time.

**Category:** Subnets

## Parameters [#parameters]

This read takes no parameters.

## CLI [#cli]

```bash
btcli query subnet-registration-cost --json
```

## Python [#python]

Namespace method (autocomplete, signature help):

```python
import bittensor as bt

sub = bt.Subtensor()
result = sub.subnets.subnet_registration_cost()
```

Or dispatch by name, as an agent would:

```python
result = sub.read("subnet_registration_cost")
```

Async is the same surface awaited: `async with bt.Subtensor() as client:`.

## On-chain implementation [#on-chain-implementation]

* Runtime API [`SubnetRegistrationRuntimeApi.get_network_registration_cost`](/code/runtime/src/lib.rs#L2348-L2350)

Every file is browsable under [/code](/code) exactly as built into the runtime.