Paymaster on ZKsync Layer 2 with Web3.js

Oleksii Kosynskyi

Oct 1, 2024 — 1 min read

In this article, we explore the Paymaster feature in ZKsync, which allows users to sponsor transaction fees. This is a powerful tool that provides flexibility, enabling users to handle gas fees in a more customizable manner. Before diving into this, ensure you have followed the steps from the previous articles, especially setting up the local environment and working with wallets and smart accounts. Here’s an example of how to use Paymaster for sending transactions, transferring tokens, and withdrawing funds.

Example 1: Send ETH Using Paymaster

In the first example, we demonstrate how to send ETH while using the Paymaster for sponsoring transaction fees.

Example 2: Send Tokens Using Paymaster

In the second example, we showcase how to send tokens using Paymaster.

Example 3: Withdraw Using Paymaster

The third example demonstrates how to withdraw ETH using the Paymaster.

Conclusion

The Paymaster feature is a powerful addition to ZKsync, enabling greater control over transaction fees. It allows you to specify custom logic for gas payments, creating a more flexible environment for users. The examples above show how you can integrate Paymaster into ETH transfers, token transfers, and withdrawals.

In the next article, we’ll explore the multi-sig feature and how it can be utilized within the ZKsync ecosystem. Stay tuned!

Helpful Links and Resources

Here are the essential links to help you get started:

Web3.js Plugin for ZKsync: You can find the official plugin repository here.
Examples for Using the Plugin: I've also prepared a dedicated repository with all the code examples from this tutorial and more, which you can access here.
ZKsync Web3.js Documentation: For more detailed information and resources, check out the official documentation here.

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