# set-subnet-identity (/docs/tx/set-subnet-identity)

Stores the subnet's public profile — name, links, contact, logo — so
explorers and participants can identify it. Owner-only: the signing
coldkey must own the subnet. Everything submitted is public and permanent
history on chain. Calling again overwrites the whole record (empty fields
clear their previous values); the chain enforces length limits on each
field. Purely cosmetic — for the token ticker use `update_symbol`, and
for economics use `set_hyperparameter`.

| Signer    | Origin       | Pallet          | Wraps                                                                                                 |
| --------- | ------------ | --------------- | ----------------------------------------------------------------------------------------------------- |
| `coldkey` | subnet owner | SubtensorModule | [`SubtensorModule.set_subnet_identity`](/code/pallets/subtensor/src/macros/dispatches.rs#L1153-L1179) |

## Parameters [#parameters]

| Parameter        | Type    | Required | Description                                               |
| ---------------- | ------- | -------- | --------------------------------------------------------- |
| `netuid`         | integer | yes      | Subnet the identity is for; the signer must be its owner. |
| `subnet_name`    | string  | yes      | Display name shown for the subnet.                        |
| `github_repo`    | string  | no       | GitHub repository URL for the subnet's code.              |
| `subnet_contact` | string  | no       | Contact address for the subnet operators.                 |
| `subnet_url`     | string  | no       | Website for the subnet.                                   |
| `discord`        | string  | no       | Discord handle or server invite.                          |
| `description`    | string  | no       | Short free-text description of what the subnet does.      |
| `logo_url`       | string  | no       | Logo image URL for the subnet.                            |
| `additional`     | string  | no       | Any extra free-text information to publish.               |

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

## Python [#python]

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

wallet = Wallet(name="my_coldkey", hotkey="my_hotkey")
intent = bt.SetSubnetIdentity(netuid=1, subnet_name="...")

sub = bt.Subtensor()
plan = sub.plan(intent, wallet)   # fee, effects, policy — no submission
result = sub.execute(intent, wallet)
if not result.success:
    print(result.error.code, result.error.remediation)
```

(`bt.Subtensor` is also the async client — `async with bt.Subtensor() as client:`
— see [The client](/docs/concepts/client).) Or build the intent by op name, as
an agent would:

```python
result = sub.execute_tool("set_subnet_identity", {...}, wallet)
```

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

`SubtensorModule.set_subnet_identity` — [`pallets/subtensor/src/macros/dispatches.rs#L1155`](/code/pallets/subtensor/src/macros/dispatches.rs#L1153-L1179):

```rust
#[pallet::call_index(78)]
#[pallet::weight(<T as crate::pallet::Config>::WeightInfo::set_subnet_identity())]
pub fn set_subnet_identity(
    origin: OriginFor<T>,
    netuid: NetUid,
    subnet_name: Vec<u8>,
    github_repo: Vec<u8>,
    subnet_contact: Vec<u8>,
    subnet_url: Vec<u8>,
    discord: Vec<u8>,
    description: Vec<u8>,
    logo_url: Vec<u8>,
    additional: Vec<u8>,
) -> DispatchResult {
    Self::do_set_subnet_identity(
        origin,
        netuid,
        subnet_name,
        github_repo,
        subnet_contact,
        subnet_url,
        discord,
        description,
        logo_url,
        additional,
    )
}
```

Delegates to [`do_set_subnet_identity`](/code/pallets/subtensor/src/utils/identity.rs#L98).

Every file is browsable under [/code](/code) exactly as built into the runtime, or as plain text under `/code/raw/<path>` (index: [`/code/index.json`](/code/index.json)).