Queried by: developersvalidators
The Big Picture
EVM precompiles are special contracts at fixed addresses providing efficient implementations of common operations. This storage controls which precompiles are active. Root can toggle precompiles on/off for security or feature management.
Use Cases
- Check if a specific precompile is enabled before calling
- Monitor precompile availability changes
- Build EVM tooling aware of available precompiles
From Chain Metadata
Map PrecompileEnum --> enabled
Purpose & Usage
Purpose
Controls which precompiled smart contracts are accessible on the EVM.
Common Query Patterns
- Query by precompile ID
- Check if precompile is enabled
Query Keys
| # | Name | Type | Description |
|---|---|---|---|
| 1 | key1 | PrecompileEnum | key1 (PrecompileEnum) |
Stored Value
value (bool)
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 PrecompileEnable storage
const key1 = 0 as any /* PrecompileEnum */;
const result = await api.query
[stringCamelCase("AdminUtils")]
[stringCamelCase("PrecompileEnable")](
key1
);
console.log("PrecompileEnable:", result.toHuman());Runtime Info
View Source- Pallet
- AdminUtils
- Storage Kind
- Map
- First Version
- v238
- Current Version
- v393