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Hardhat 3

Build with AI

This guide explains how to use coding agents effectively in Hardhat projects.

Agent skills

Section titled “Agent skills”

LLMs are good at working with Hardhat, but they tend to prefer Hardhat 2 APIs. A small amount of extra context about Hardhat 3 is usually enough to steer them in the right direction.

The easiest way to provide that context is to install our main Hardhat skill:

Terminal window
npx skills add nomicfoundation/hardhat-skills --skill hardhat

Project-specific skills

Section titled “Project-specific skills”

Hardhat projects are extensible and can rely on different plugins, so we also publish skills tailored to specific setups.

If your project is based on hardhat-toolbox-viem, install the corresponding skill:

Terminal window
npx skills add nomicfoundation/hardhat-skills --skill hardhat-toolbox-viem

If your project is based on hardhat-toolbox-mocha-ethers:

Terminal window
npx skills add nomicfoundation/hardhat-skills --skill hardhat-toolbox-mocha-ethers

Documentation

Section titled “Documentation”

Hardhat docs are agent-friendly: we offer an llms.txt index, and any docs page is also available as Markdown. Pointing your agent at our docs should just work.