Contracts

Listening to Events

The recommended way to listen to contract events is to use the getContractEvents function and passing a prepared event with the Solidity event signature and the params. This is type-safe based on the Solidity event signature you define. You can get your desired contract event signature from the solidity code directly.

import { getContractEvents, prepareEvent } from "thirdweb";
 
const myEvent = prepareEvent({
  signature:
    "event Transfer(address indexed from, address indexed to, uint256 value)",
});
 
const events = await getContractEvents({
  contract: myContract,
  events: [myEvent],
});

You can also use the standard event definitions from the SDK to define the events you want to listen to.

import { getContractEvents } from "thirdweb";
import { transferEvent } from "thirdweb/extensions/erc20";
 
const events = await getContractEvents({
  contract: myContract,
  events: [transferEvent()],
});

Using the CLI, you can generate optimized functions for all the possible calls to a contract. This saves you time and precomputes all the necessary encoding.

npx thirdweb generate <contractId>/<contractAddress>

Read more on how to generate extension functions using the CLI.