MaxAllowedValidators

Storage Map v101 → current

Maximum validators on a subnet .

Explore chain
Queried by: validatorsdelegatorssubnet ownersdevelopersanalytics

The Big Picture

Each subnet has limited validator slots. MaxAllowedValidators caps how many neurons can hold ValidatorPermit. This creates competition - only the top stakers become validators. The rest are miners.

Why This Matters

How many validators can this subnet have? MaxAllowedValidators. The top N by stake get permits. If there are 256 neurons and 64 validator slots, top 64 validate, rest mine.

Example Scenario

Query MaxAllowedValidators(netuid=1) returns 64. Subnet 1 allows 64 validators. The 64 neurons with highest stake have ValidatorPermit = true.

Common Questions

What if I'm just outside the top N?
You're a miner. To become a validator, either accumulate more stake to pass someone, or wait for a current validator to lose stake/deregister.
Can subnet owners change this?
Yes, it's a hyperparameter. Increasing allows more validators; decreasing removes permits from the lowest-stake validators.
Why limit validators?
Consensus efficiency. Too many validators slow down weight processing and consensus. The limit balances decentralization with performance.

Use Cases

  • Check how many validators a subnet allows
  • Determine stake needed for validator permit
  • Compare subnet structures
  • Build validator slot availability displays
  • Research subnet governance designs

Purpose & Usage

Purpose

Limit validator count - only top stakers can validate.

Common Query Patterns

  • Query by netuid
  • Check validator slots available
  • Research subnet structure

Query Keys

#NameTypeDescription
1
key1
u16 key1 (u16)

Stored Value

u16

value (u16)

Relationships

Modified By

register_network

Related Events

NetworkAdded

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 });

// Query MaxAllowedValidators storage
const key1 = 0;

const result = await api.query
  [stringCamelCase("SubtensorModule")]
  [stringCamelCase("MaxAllowedValidators")](
  key1
);

console.log("MaxAllowedValidators:", result.toHuman());

Runtime Info

View Source
Pallet
SubtensorModule
Storage Kind
Map
First Version
v101
Current Version
v393
Back to SubtensorModule Storage