txSync

Wallet developer tools

txSync

txSync is a developer and user toolkit for ZKsync that bundles a bridge, asset portal, paymaster builder (Tsuko), and SDKs in a single platform.

Freemium

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What is txSync?

txSync helps teams building on ZKsync ship faster by combining an asset portal, an Ethereum-to-ZKsync bridge, a no-code paymaster builder called Tsuko, and a contract playground. Developers can deploy custom paymasters to sponsor gas, automate transactions, and integrate ZKsync features through SDKs without managing the underlying infrastructure.

Sponsor gas and bundle user ops in your app or on your chain

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Developer resources from Alchemy

Overview

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What are Paymasters? (ERC-4337)

Learn the Function of Paymaster Smart Contracts in ERC-4337

Custom gas tokens: how to use ERC-20 tokens for transaction fees

Blog

Technical

Custom gas tokens: how to use ERC-20 tokens for transaction fees

Learn how Custom Gas Tokens let users pay transaction fees with your ERC-20 token instead of ETH. Complete guide covering implementation approaches, economic considerations, and real-world case studies.

Case study

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Building the future of secure crypto wallets with Zengo & Alchemy

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App store listings are independently reviewed and written by Alchemy using a combination of inbound submissions, editorial research, public project sources, and third-party directories, including ecosystem data from The Grid under the Open Database License, DefiLlama, DappRadar, Reown, and chain ecosystem pages.

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