web3▌

Master Web3 frontend development with wallet integration, modern libraries (viem/wagmi), and production dApp patterns.

Use this skill when the user asks about or needs to build:

Use this skill to design, implement, and review secure blockchain systems: smart contracts, on-chain/off-chain integration, custody and signing, testing, audits, and production operations.

Master comprehensive testing strategies for smart contracts using Hardhat, Foundry, and advanced testing patterns.

Comprehensive smart contract testing with Hardhat and Foundry, supporting unit tests, integration tests, mainnet forking, and gas optimization. \n \n Supports both Hardhat (JavaScript/TypeScript) and Foundry (Solidity) testing frameworks with fixtures, cheatcodes, and assertion libraries \n Includes mainnet forking capabilities for realistic testing against live contract state, account impersonation, and time manipulation \n Covers gas optimization testing, fuzzing for edge cases, snapshot/rever