# create-pure-proxy (/docs/tx/create-pure-proxy)

The chain derives a new address from the signer, `proxy_type`, `index`,
and the creation block. Nobody holds its private key — the spawner controls
it purely through the proxy relationship, which makes it useful as a
disposable or role-scoped account (e.g. a Staking-only treasury). Record the
creation block and extrinsic index (shown in the result): `kill_pure_proxy`
needs them to close the account later. Losing the spawner key means losing
the pure proxy and anything it holds.

| Signer    | Pallet | Wraps               |
| --------- | ------ | ------------------- |
| `coldkey` | Proxy  | `Proxy.create_pure` |

## Parameters [#parameters]

| Parameter    | Type    | Required | Description                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
| ------------ | ------- | -------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `proxy_type` | string  | no       | Scope of calls the delegation covers. One of: Any, Owner, NonCritical, NonTransfer, Senate, NonFungible, Triumvirate, Governance, Staking, Registration, Transfer, SmallTransfer, RootWeights, ChildKeys, SudoUncheckedSetCode, SwapHotkey, SubnetLeaseBeneficiary, RootClaim. Triumvirate, Senate, Governance, and RootWeights are deprecated on the current runtime: they deny all calls, so a proxy of those types can dispatch nothing. Prefer the narrowest type that covers your use; Any can do everything the account can, including transfers. |
| `delay`      | integer | no       | Announcement delay in blocks: the delegate must announce each call and wait this long before executing it, giving you time to veto. 0 executes immediately.                                                                                                                                                                                                                                                                                                                                                                                             |
| `index`      | integer | no       | Disambiguator so one signer can create several pure proxies in one block; also part of the derived address. Keep 0 unless batching.                                                                                                                                                                                                                                                                                                                                                                                                                     |

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 create-pure-proxy --dry-run
btcli tx create-pure-proxy -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.CreatePureProxy()

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