# multisig-approve (/docs/tx/multisig-approve)

Records the signer's approval for a pending multisig operation without
dispatching anything. The *opening* approval (omit `timepoint`; reserves
a deposit from the signer) embeds the full call in the extrinsic, so every
co-signer can recover the call — and a ready-to-run command — straight
from `multisig pending`, with no out-of-band call data. Intermediate
approvals (pass the opening `timepoint`) go up hash-only, which stays
cheap even for huge calls like a runtime-upgrade blob. It never executes —
once `threshold - 1` approvals exist, the last signatory must send
`multisig_execute` with the full call. Approving twice from the same
signer, or with a mismatched timepoint, threshold, or signatory set, fails.

| Signer    | Pallet   | Wraps                                            |
| --------- | -------- | ------------------------------------------------ |
| `coldkey` | Multisig | `Multisig.as_multi`, `Multisig.approve_as_multi` |

## Parameters [#parameters]

| Parameter           | Type    | Required | Description                                                                                                                                                                                                                                                                            |
| ------------------- | ------- | -------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `threshold`         | integer | yes      | Number of approvals required to execute, counting the signer. Together with the full signatory set it identifies the multisig account, so it must match on every approval.                                                                                                             |
| `other_signatories` | array   | yes      | The other members of the multisig (every signatory except the signer), as a JSON list of addresses. The same set must be given on every approval; order does not matter (sorted automatically).                                                                                        |
| `call`              | object  | yes      | The inner call to dispatch from the multisig account, as a JSON object \{"op": \<intent name>, ...args}. All approvals must describe the identical call — it is matched by hash. Its arguments must be fully explicit, since it runs as the multisig account, not the signer's wallet. |
| `timepoint`         | object  | no       | Block height and extrinsic index of the approval that opened the operation, as a JSON object \{"height": ..., "index": ...}. Omit on the first approval; required on every later one (read it with the multisig query).                                                                |

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 multisig-approve \
  --threshold <int> \
  --other-signatories <a,b,c> \
  --call '<json>' --dry-run
btcli tx multisig-approve \
  --threshold <int> \
  --other-signatories <a,b,c> \
  --call '<json>' -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.MultisigApprove(threshold=0, other_signatories=[...], call={...})

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