ExecutedFailed

Event v210 → current #4

Emitted when a contract call fails, reverting state but consuming gas.

View events on chain
Useful for: developers

The Big Picture

Contract calls can fail from require() failures, out of gas, or invalid state. State unchanged but gas spent.

Use Cases

  • Debug failures
  • Monitor failure rates
  • Build retry logic

From Chain Metadata

A contract has been executed with errors. States are reverted with only gas fees applied.

Triggers

Emitted by

call

Preconditions

  • Call attempted
  • Error or revert occurred

Effects

Storage Modified

AccountStorages

Postconditions

  • State reverted
  • Gas still charged

Event Data

#NameTypeDescription
0
address
→ contract_address
H160 Address of the contract that failed (H160)

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 });

// Subscribe to ExecutedFailed events
api.query.system.events((events) => {
  events
    .filter(({ event }) =>
      event.section === stringCamelCase("EVM") &&
      event.method === "ExecutedFailed"
    )
    .forEach(({ event }) => {
      console.log("ExecutedFailed:", event.data.toHuman());
    });
});

Runtime Info

Pallet Index
22
Event Index
4
First Version
v210
Current Version
v393
Back to EVM Events