skills.rest
phpmac
phpmacCOMMUNITY
Explore all skills by this author →
GitHub

hardhat-v2-fork-testing

Fork Hardhat v2 networks to mirror real-chain state for local contract testing.

Updated Aug 27, 2026
Search Tags:#testing#ethereum#hardhat#smart-contracts#forking#impersonation#local-network
One-click install
npx skills add https://github.com/phpmac/skills --skill hardhat-v2-fork-testing
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: hardhat-v2-fork-testing
Source: https://github.com/phpmac/skills/tree/main/plugins/my-agents/skills/hardhat-v2-fork-testing
Command: npx skills add https://github.com/phpmac/skills --skill hardhat-v2-fork-testing

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Forking a live chain into a local Hardhat v2 environment to test interactions with deployed contracts without exposing private keys, enabling realistic test scenarios.

Core Features & Use Cases

  • Fork mainnet/testnet state locally to reproduce real-world conditions.
  • Impersonate arbitrary addresses without private keys for testing.
  • Validate upgrades and complex interactions against current network state.
  • Note: Hardhat v3 syntax differences may require adjustments when migrating tests.

Quick Start

Enable a forked Hardhat network by setting FORK_URL and FORK_ENABLED, then run your tests on the hardhat network.

Frequently Asked Questions about hardhat-v2-fork-testing

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I fork Ethereum mainnet state locally for smart contract testing?▼

To fork Ethereum mainnet state locally, you need a Hardhat v2 setup with forking enabled by setting FORK_URL and FORK_ENABLED. This mirrors real-chain state locally, allowing safe testing of deployed contracts without exposing private keys.

Can I impersonate arbitrary addresses without private keys in Hardhat?▼

Yes, you can impersonate arbitrary addresses without private keys in Hardhat. By forking the live network state into a local environment, the Skill enables testing interactions from any address, validating contract upgrades and complex scenarios realistically.

How do I test smart contract upgrades against current network state?▼

You test smart contract upgrades against current network state by forking a live chain into a local Hardhat v2 environment. This provides a realistic state mirror, allowing you to validate upgrades and complex interactions safely.

Does this Hardhat forking Skill work with Hardhat v3 test scripts?▼

This Skill is designed for Hardhat v2 networks. Hardhat v3 syntax differences may require adjustments when migrating tests, so you should anticipate modifying your compatible test scripts to automate scenarios.

What environment variables do I need to enable Hardhat network forking?▼

To enable Hardhat network forking, you need to set the FORK_URL and FORK_ENABLED environment variables. Once configured, you can run your tests on the hardhat network to interact with forked mainnet or testnet state.

Related Skills

Explore More Software Engineering Skills→
emilneuraz-aiemilneuraz-ai

web3-testing

Automates structured testing of Solidity contracts using Hardhat and Foundry.

Community
Advanced
camoneartcamoneart
5

web3-testing

Automate smart contract testing for Solidity projects across Hardhat and Foundry workflows.

Community
Advanced
MolcajeteAIMolcajeteAI
2

deployment

Deploy Solidity smart contracts to testnets and mainnets using Foundry and Hardhat.

Official
Advanced
flare-foundationflare-foundation
19

flare-general

Provide consolidated Flare network, protocol, and developer tooling knowledge.

Official
Basic