Skill based on Hardhat (NomicFoundation/hardhat), generated 2026-02-09. Official docs: https://hardhat.org/docs
Hardhat is an Ethereum development environment: task runner (compile, test, run, node), built-in Hardhat Network, Hardhat Ignition for declarative deployment, and plugins (toolbox ethers/viem, Chai matchers, verify, etc.).
Core References
| Topic |
Description |
Reference |
| Getting started |
Init, tasks, compile/test/deploy flow |
core-getting-started |
| Configuration |
hardhat.config, networks, solidity, paths, mocha |
core-config |
| HRE |
Hardhat Runtime Environment, network, artifacts, config |
core-hre |
| Compiler config |
Solidity version, optimizer, viaIR, settings |
core-compiler-config |
| Build profiles |
default vs production, --build-profile, solidity.profiles |
core-build-profiles |
| Config variables |
configVariable, keystore, secrets, env |
core-config-variables |
| Tasks and plugins |
HRE, tasks, plugins, creating tasks |
core-tasks-plugins |
Features
| Topic |
Description |
Reference |
| Hardhat Network |
In-process vs node, JSON-RPC, forking, network helpers |
features-network |
| Hardhat Ignition |
Declarative deployment, buildModule, Future, deploy |
features-ignition |
| Deployment overview |
Ignition vs scripts, network and keystore setup |
features-deployment-overview |
| Deployment scripts |
viem/ethers deploy in scripts, hardhat run, --build-profile |
features-deployment-scripts |
| Multichain |
Chain types (l1, op), --chain-type, network.connect chainType |
features-multichain |
| Testing |
loadFixture, Chai matchers, network helpers |
features-testing |
| Testing (Viem + node:test) |
hre.network.connect, viem assertions, network helpers |
features-testing-viem |
| Solidity tests |
.t.sol, setUp, fuzz, forge-std, cheatcodes |
features-testing-solidity |
| Code coverage |
--coverage, LCOV, HTML report |
features-testing-coverage |
| Gas statistics |
--gas-stats, per-function and deployment gas |
features-testing-gas-stats |
| Toolbox and verify |
Ethers vs Viem toolbox, contract verification |
features-toolbox-verify |
Advanced
| Topic |
Description |
Reference |
| Cheatcodes |
vm.prank, time, and other Solidity test cheatcodes |
advanced-cheatcodes |
External Links
