ItemCompleted

Event v120 → current #3

Emitted for each call in a batch that completed successfully.

View events on chain
Useful for: developersanalytics

The Big Picture

Granular success tracking within batches.

Use Cases

  • Track individual call success within batch

From Chain Metadata

A single item within a Batch of dispatches has completed with no error.

Triggers

Preconditions

  • Part of a batch execution

Effects

Postconditions

  • Call's state changes persisted

This event has no data fields.

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);

// Subscribe to ItemCompleted events
client.finalizedBlock$.subscribe(async (block) => {
  const events = await api.event.Utility.ItemCompleted.get(block.hash);
  for (const evt of events) {
    console.log("ItemCompleted:", evt.payload);
  }
});

On-Chain Activity

Emission Frequency
●●●●●○ Dominant 5M–50M emissions

Core protocol operations, high volume

#9 most emitted event

As of block 7,429,232

Runtime Info

Pallet Index
11
Event Index
3
First Version
v120
Current Version
v411
Back to Utility Events