sudo_set_alpha_values
Call v156 → v277, v290 → current #51Sets the alpha low and high values for a subnet .
View calls on chainCall Workflow
This diagram shows the call execution flow: starting with sudo_set_alpha_values, passing through validation
(signature, nonce, mortality, fee payment), then pre-dispatch checks, followed by dispatch and modifies storage: SubtensorModule.AlphaValues, and finally post-dispatch where ExtrinsicSuccess is emitted and fees are settled.
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Used by: subnet owners
The Big Picture
Alpha values control aspects of how subnet-specific tokens (Alpha) behave and are valued.
Use Cases
- Tuning alpha token economics
- Adjusting subnet token curves
From Chain Metadata
Sets values for liquid alpha
Input Parameters
Permissions
Origin
Root
Required Role
Permission data inferred from metadata. May be incomplete.
Requirements
- Caller is root or subnet owner
- Subnet exists
- alpha_low < alpha_high
Effects
Storage Modified
Postconditions
- AlphaLow and AlphaHigh updated
Side Effects
- Affects alpha token mechanics
Code Examples
import { createClient, Binary } from "polkadot-api";
import { getWsProvider } from "polkadot-api/ws";
import { sub } from "@polkadot-api/descriptors"; // generated by: npx papi add sub -w wss://entrypoint-finney.opentensor.ai:443
const client = createClient(getWsProvider("wss://entrypoint-finney.opentensor.ai:443"));
const api = client.getTypedApi(sub);
// Build sudo_set_alpha_values call (typed, named args)
const netuid = 1;
const alpha_low = 0;
const alpha_high = 0;
const tx = api.tx.AdminUtils.sudo_set_alpha_values({
netuid,
alpha_low,
alpha_high,
});Version History
v156 block 3,321,841 3 args
v290 block 5,947,548 3 args Current
Runtime Info
View Source- Pallet Index
- 19
- Call Index
- 51
- First Version
- v156
- Current Version
- v411