# stake-burn (/docs/tx/stake-burn)

Spends TAO from the signing coldkey to buy the subnet's alpha and burn it,
reducing alpha supply (a buyback-and-burn) rather than adding to the
signer's stake. The TAO is spent permanently — nothing lands in your stake,
so this is not an investment call; use a regular add-stake intent to
acquire a position. Fails on the root subnet
(`CannotBurnOrRecycleOnRootSubnet`). The chain accepts an optional
limit (omitted = market order), but this intent always requires
`limit_price` and executes all-or-nothing: the swap fails instead of
partially filling at a worse rate. Counts against a configured spend
cap.

| Signer    | Pallet          | Wraps                            |
| --------- | --------------- | -------------------------------- |
| `coldkey` | SubtensorModule | `SubtensorModule.add_stake_burn` |

## Parameters [#parameters]

| Parameter     | Type              | Required | Description                                                                            |
| ------------- | ----------------- | -------- | -------------------------------------------------------------------------------------- |
| `netuid`      | integer           | yes      | Subnet whose alpha is bought and burned.                                               |
| `amount_tao`  | number \| `"all"` | yes      | Spent from the coldkey to buy alpha that is then burned.                               |
| `limit_price` | integer           | yes      | Worst acceptable price in rao per alpha; the call fails rather than filling beyond it. |
| `hotkey_ss58` | string            | no       | Hotkey the burn is routed through; defaults to the wallet's hotkey.                    |

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 stake-burn \
  --netuid <int> \
  --amount-tao <amount|all> \
  --limit-price <int> --dry-run
btcli tx stake-burn \
  --netuid <int> \
  --amount-tao <amount|all> \
  --limit-price <int> -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.StakeBurn(netuid=1, amount_tao=1.0, limit_price=0)

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("stake_burn", {...}, wallet)
```