Block Handlers

Name: indexing-blocks
Rating: 76
Author: enviodev

Process every block (or every Nth block) using onBlock from generated. No contract address or config.yaml entry needed.

Handler

import { onBlock } from "generated";

onBlock(
  { name: "BlockTracker", chain: 1, interval: 100 },
  async ({ block, context }) => {
    context.BlockSnapshot.set({
      id: `${block.number}`,
      blockNumber: BigInt(block.number),
      timestamp: BigInt(block.timestamp),
    });
  }
);

Options

Option	Type	Required	Description
`name`	`string`	yes	Handler name for logging
`chain`	`number`	yes	Chain ID to process
`interval`	`number`	no	Process every Nth block (default: 1)
`startBlock`	`number`	no	Inclusive start block
`endBlock`	`number`	no	Inclusive end block

Notes

•onBlock self-registers — no config.yaml entry needed
•No events or contract address required
•EVM chains only
•The handler context has the same entity API as event handlers
•block object provides number and timestamp (more fields may be added)

Deep Documentation

Full reference: https://docs.envio.dev/docs/HyperIndex-LLM/hyperindex-complete