# set-hyperparameter (/docs/tx/set-hyperparameter)

Dispatches the matching AdminUtils `sudo_set_*` call for the named
parameter. The signer must be the subnet's owner coldkey; root-only
parameters are not available here and must go through the raw-call escape
hatch. Changes take effect on chain immediately and shape subnet economics
and consensus (registration costs, weight rules, immunity, transfers), so
verify the raw value before sending — `value` accepts either the raw
on-chain integer or a human form that is converted for you. Some
parameters are rate-limited by the chain, so a quick follow-up change can
fail. Read current values back with the `subnet_hyperparameters` read.

| Signer    | Pallet     | Wraps                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
| --------- | ---------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `coldkey` | AdminUtils | `AdminUtils.sudo_set_immunity_period`, `AdminUtils.sudo_set_min_allowed_weights`, `AdminUtils.sudo_set_weights_version_key`, `AdminUtils.sudo_set_activity_cutoff`, `AdminUtils.sudo_set_min_burn`, `AdminUtils.sudo_set_bonds_moving_average`, `AdminUtils.sudo_set_serving_rate_limit`, `AdminUtils.sudo_set_commit_reveal_weights_interval`, `AdminUtils.sudo_set_max_allowed_uids`, `AdminUtils.sudo_set_burn_increase_mult`, `AdminUtils.sudo_set_burn_half_life`, `AdminUtils.sudo_set_commit_reveal_weights_enabled`, `AdminUtils.sudo_set_liquid_alpha_enabled`, `AdminUtils.sudo_set_network_pow_registration_allowed`, `AdminUtils.sudo_set_yuma3_enabled`, `AdminUtils.sudo_set_bonds_reset_enabled`, `AdminUtils.sudo_set_toggle_transfer`, `AdminUtils.sudo_set_owner_cut_enabled`, `AdminUtils.sudo_set_owner_cut_auto_lock_enabled` |

## Parameters [#parameters]

| Parameter | Type                        | Required | Description                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
| --------- | --------------------------- | -------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `netuid`  | integer                     | yes      | Subnet to configure; the signer must be its owner.                                                                                                                                                                                                                                                                                                                                                                                                                   |
| `name`    | string                      | yes      | Hyperparameter to set. One of: activity\_cutoff, bonds\_moving\_avg, bonds\_reset\_enabled, burn\_half\_life, burn\_increase\_mult, commit\_reveal\_period, commit\_reveal\_weights\_enabled, immunity\_period, liquid\_alpha\_enabled, max\_allowed\_uids, min\_allowed\_weights, min\_burn, network\_pow\_registration\_allowed, owner\_cut\_auto\_lock\_enabled, owner\_cut\_enabled, serving\_rate\_limit, transfers\_enabled, weights\_version, yuma3\_enabled. |
| `value`   | integer \| number \| string | yes      | New value. Give the raw on-chain integer, or the human form as a float or a string with a decimal point (a 0..1 fraction for normalized parameters, a TAO amount for rao parameters). Boolean parameters take true/false or 0/1.                                                                                                                                                                                                                                     |

Address parameters (`--hotkey`, `--coldkey`, `--dest`, ...) accept a raw ss58
address, an address-book or proxy-book name, or a local wallet/hotkey name.

## CLI [#cli]

Preview with `--dry-run` (shows fee, effects, and policy result without
submitting), then submit:

```bash
btcli tx set-hyperparameter \
  --netuid <int> \
  --name <value> \
  --value <value> --dry-run
btcli tx set-hyperparameter \
  --netuid <int> \
  --name <value> \
  --value <value> -w my_coldkey
```

## Python [#python]

```python
import bittensor as sub
from bittensor.wallet import Wallet

wallet = Wallet(name="my_coldkey", hotkey="my_hotkey")
intent = sub.SetHyperparameter(netuid=1, name="...", value="...")

async with sub.Client("finney") as client:
    plan = await client.plan(intent, wallet)   # fee, effects, policy — no submission
    result = await client.execute(intent, wallet)
    if not result.success:
        print(result.error.code, result.error.remediation)
```

Or build it by op name, as an agent would:

```python
await client.execute_tool("set_hyperparameter", {...}, wallet)
```