sudo_set_min_delegate_take
Call v149 → current #46Sets the minimum delegate take percentage.
View calls on chainCall Workflow
This diagram shows the call execution flow: starting with sudo_set_min_delegate_take, passing through validation
(signature, nonce, mortality, fee payment), then pre-dispatch checks, followed by dispatch and modifies storage: SubtensorModule.MinDelegateTake, and finally post-dispatch where ExtrinsicSuccess is emitted and fees are settled.
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Used by: subnet owners
The Big Picture
Ensures validators receive at least this percentage. Prevents unsustainable delegation economics.
Use Cases
- Ensuring validators earn minimum
- Preventing race-to-bottom economics
From Chain Metadata
See [`Pallet::sudo_set_min_delegate_take`].
Input Parameters
| # | Name | Type | Description |
|---|---|---|---|
| 0 | take | u16 | take (u16) |
Permissions
Origin
Root
Required Role
Permission data inferred from metadata. May be incomplete.
Requirements
- Caller is root account
Effects
Storage Modified
Postconditions
- MinDelegateTake updated
Side Effects
- Validators cannot set take below this
Code Examples
import { ApiPromise, WsProvider } from "@polkadot/api";
import { stringCamelCase } from "@polkadot/util";
const provider = new WsProvider("wss://entrypoint-finney.opentensor.ai:443");
const api = await ApiPromise.create({ provider });
// Build sudo_set_min_delegate_take call
const take = 0;
const call = api.tx[stringCamelCase("AdminUtils")][stringCamelCase("sudo_set_min_delegate_take")](
take
);Runtime Info
View Source- Pallet Index
- 19
- Call Index
- 46
- First Version
- v149
- Current Version
- v393