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set-mechanism-count

Set the number of mechanisms on a subnet.

Mechanisms are independent incentive sub-markets within one subnet, each running its own weights and consensus; this owner-only call sets how many the subnet runs. The count must be greater than zero, and the chain caps how many mechanisms a subnet may have. Increasing the count opens new mechanisms; decreasing it removes the highest-numbered ones and the miner state in them. Any change to the count clears the emission split back to an even division — reapply set_mechanism_emission_split afterwards if you want an uneven split. Rate-limited and blocked during the end-of-epoch admin freeze window.

Signer	Pallet	Wraps
`coldkey`	AdminUtils	`AdminUtils.sudo_set_mechanism_count`

Parameters

Parameter	Type	Required	Description
`netuid`	integer	yes	Subnet to configure; the signer must be its owner.
`mechanism_count`	integer	yes	Number of mechanisms the subnet should run.

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

CLI

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

btcli tx set-mechanism-count \
  --netuid <int> \
  --mechanism-count <int> --dry-run
btcli tx set-mechanism-count \
  --netuid <int> \
  --mechanism-count <int> -w my_coldkey

Python

import bittensor as sub
from bittensor.wallet import Wallet

wallet = Wallet(name="my_coldkey", hotkey="my_hotkey")
intent = sub.SetMechanismCount(netuid=1, mechanism_count=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:

await client.execute_tool("set_mechanism_count", {...}, wallet)