ZKsync Developer Tooling & Smart Contract Infrastructure

txFusion develops and maintains the official ZKsync developer toolchain, enabling Solidity and Vyper smart contract development, compilation, deployment, verification, and testing on ZKsync Era. As a core contributor to the ZKsync ecosystem in partnership with Matter Labs, txFusion delivers production-grade tooling and integration services used by thousands of projects building on ZKsync.

Hardhat Plugin Suite (hardhat-zksync)

The official suite of ZKsync Hardhat plugins covers the full smart contract lifecycle on ZKsync Era:

• hardhat-zksync-solc / hardhat-zksync-vyper: Compile Solidity and Vyper contracts for ZKsync Era
• hardhat-zksync-deploy: Deploy smart contracts to ZKsync Era with dedicated utilities
• hardhat-zksync-verify / hardhat-zksync-verify-vyper: Verify contracts on ZKsync Era network
• hardhat-zksync-upgradable: End-to-end pipeline for deploying and updating upgradable contracts
• hardhat-zksync-ethers: Wrapper around ethers.js with ZKsync-specific methods
• hardhat-zksync-node: Run the ZKsync era-test-node locally for development and testing

Multi-Language SDKs

txFusion maintains the official ZKsync SDKs across JavaScript/TypeScript, Python, Java, Go, and Swift, giving developers across the full stack seamless access to ZKsync Era functionality. Available at sdk.zksync.io.

ZK Infrastructure Development Services

Beyond tooling, txFusion provides custom ZK infrastructure development and integration services:

• Bridge Development: Design, build, and operate cross-chain bridges between Ethereum L1 and ZKsync L2
• Relayer Infrastructure: Build and operate ZKsync relayers providing API abstraction for on-chain interactions
• Protocol Integration: Transition projects to ZKsync with compatibility engineering and contract deployment
• Custom ZK Tooling: Develop bespoke backend services, APIs, and tooling for ZKsync-based applications

Targeted at DeFi protocols, NFT platforms, gaming projects, and enterprise teams entering the ZKsync ecosystem.