Hardhat 3: Rearchitected & Rust-powered.

Ethereum development environment for professionals

Ready to use out of the box

Hardhat includes everything you need for Solidity smart contract development. Testing, deployment, gas analysis, code coverage, code verification, and more.

Why hardhat?

Solidity debugger. Reliable and fully featured.

Accelerate your development by diving under the hood. Explore low level EVM aspects to figure out complex bugs quickly.

Learn more about the Hardhat Debugger

Run Solidity locally on a Rust-powered runtime

Deploy your contracts, run tests, and debug your code without dealing with live networks. Hardhat’s Ethereum simulation engine, EDR, is written in Rust for great performance.

Learn more about EDR

Comprehensive testing approach

Write unit tests in Solidity for speed and conciseness, integration tests in TypeScript for expressiveness and complexity, or fuzzing tests to push the edges. Decide on a case by case basis.

Learn more about testing

Multi-chain ready: Optimism’s OP Stack and Base simulation support

Manage multiple networks at the same time and confidently deploy on OP Stack knowing your code was tested on an accurate simulation.

Learn more about simulating Base

Simple and reliable deployments

Define your contract instances, their operations, and Hardhat Ignition will drive the complex details and parallelize execution.

Get started with Hardhat Ignition

TypeScript extensibility

A tooling platform designed to be extended, Hardhat has all the utilities you need to address your project-specific needs. Change anything you like. Even entire built-in tasks, or just parts of them.

Learn more about extending Hardhat

Plugin ecosystem

Extend Hardhat with a composable ecosystem of plugins that add functionality and integrate your existing tools into a smooth workflow.

Learn started about simulating Base

For teams and projects of any scale

From single hacker quickly iterating on a proof of concept to full blown engineering organization dealing with ad-hoc needs at scale, Hardhat adapts as your needs change

Get started with plugins

Flexible. Extensible. Fast.

Experience the new way of building Ethereum software.

What`s new in Hardhat

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Accelerate your development by diving under the hood. Explore low level EVM aspects to figure out complex bugs quickly.Explore low level EVM aspects to figure out complex bugs quickly.

Learn more about Hardhat v2.22.19