Queried by: developerswalletsanalytics
The Big Picture
The base fee is the minimum gas price for transactions. It adjusts up when blocks are full and down when empty. Users pay base fee (burned) + priority fee (to validators).
Use Cases
- Estimate transaction costs
- Set gas price in transactions
- Track fee trends
- Build gas price oracles
Purpose & Usage
Purpose
Stores the base fee for the next block's transactions.
Common Query Patterns
- Single value query
Stored Value
value (U256)
Relationships
Modified By
Related Events
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);
// Query BaseFeePerGas storage (no keys - plain value)
const result = await api.query.BaseFee.BaseFeePerGas.getValue();
console.log("BaseFeePerGas:", result);Version History
v210 block 4,345,556 Added
v213–v215 · runtime versions skipped on chain (never deployed)
v216 block 4,510,996 Internal re-bind
v235–v237 · runtime versions skipped on chain (never deployed)
v238 block 4,936,550 Internal re-bind
v278–v289 · runtime versions skipped on chain (never deployed)
v290 block 5,947,548 Internal re-bind
v307–v314 · runtime versions skipped on chain (never deployed)
v315 block 6,414,634 Internal re-bind
v316–v319 · runtime versions skipped on chain (never deployed)
v320 block 6,523,566 Internal re-bind
v327–v333 · runtime versions skipped on chain (never deployed)
v334 block 6,811,690 Internal re-bind
v353–v360 · runtime versions skipped on chain (never deployed)
v361 block 7,063,679 Internal re-bind
v394–v400 · runtime versions skipped on chain (never deployed)
v401 block 8,036,576 Internal re-bind Current
Runtime Info
- Pallet
- BaseFee
- Storage Kind
- Plain
- First Version
- v210
- Current Version
- v411