set_elasticity
Call v210 → current #1Sets the base fee elasticity parameter (admin only).
View calls on chainCall Workflow
This diagram shows the call execution flow: starting with set_elasticity, passing through validation
(signature, nonce, mortality, fee payment), then pre-dispatch checks, followed by dispatch which emits events: NewElasticity and modifies storage: Elasticity, and finally post-dispatch where ExtrinsicSuccess is emitted and fees are settled.
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Used by: developers
The Big Picture
Elasticity controls how fast fees respond to congestion - higher = more volatile.
Use Cases
- Tune fee responsiveness
- Stabilize/destabilize gas prices
Input Parameters
| # | Name | Type | Description |
|---|---|---|---|
| 0 | elasticity | Permill | elasticity (Permill) |
Permissions
Origin
Unknown
Required Role
Permission data inferred from metadata. May be incomplete.
Requirements
- Admin/root privileges
- Valid Permill
Effects
Events Emitted
Storage Modified
Postconditions
- Elasticity updated
- NewElasticity emitted
Side Effects
- Affects fee responsiveness to congestion
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 set_elasticity call
const elasticity = 0 as any /* Permill */;
const call = api.tx[stringCamelCase("BaseFee")][stringCamelCase("set_elasticity")](
elasticity
);Runtime Info
- Pallet Index
- 25
- Call Index
- 1
- First Version
- v210
- Current Version
- v393