Ethereum Smart Contract

A solidity preprocessor and flattener CLI and library

Buidler is an extensible developer tool that helps smart contract developers increase productivity by reliably bringing together the tools they want.

A comprehensive toolkit for building modular smart contracts with the EIP-2535 Diamond Standard, including core contracts and optimized building blocks

Polkadot [Hardhat](https://hardhat.org/) plugin to compile Ethereum-compatible solidity smart contracts.

Use Hardhat with Polkadot all-in-one plugin

Incremental Merkle tree implementations in Solidity.

The smart contracts which make up the Synthetix system. (synthetix.io)

Official Solium Plugin for Security-related lint rules

Ethereum smart contract transaction input data decoder

Generate NatSpec documentation automatically on compilation

A node:test reporter

A Hardhat plugin that adds test assertions for Viem

### Prerequisites

Additional assertions and utilities for testing Ethereum smart contracts in Truffle unit tests

A node:test runner

Nomic Foundation's recommended bundle of Hardhat plugins

Linter to identify and fix Style & Security issues in Solidity

Model Context Protocol (MCP) server for interacting with EVM-compatible networks

A mocha test runner

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Hardhat plugin to develop smart contracts in Yul

Aave Protocol V2 smart contracts

Hardhat plugin for exporting the contract storage layout

Wrappers for 0x smart contract wrappers generated using @0x/abi-gen

Hardhat plugin to support typechain

Prepend local Solidity source files with an SPDX License Identifier

Hardhat utils for testing

Hardhat plugin for integration with Tenderly

Incremental Merkle tree implementations in Solidity.

An efficient Ether and token balance scanner

JavaScript library for the OpenZeppelin smart contract platform

A TypeScript SDK to receive pushed updates from OpenSea over websocket

Semaphore contracts to manage groups and broadcast anonymous signals.

Excubiae contracts.

EVM Smart Contracts for Solidity

Ethereum smart contract and library for efficient ERC20 and Ether balance checks.

Venus Protocol contracts to manage the income generated by the protocol

Solidity library for flexible smart contract development

Sign Hardhat deployment transactions using KMS key

Collection of smart contracts for the Realitio fact verification platform

A Solidity library and EVM hooks for using console.log from Solidity contracts

Smart contracts for Vea

Venus Protocol Price Oracle

An efficient Ether and token balance scanner

Hardhat plugin to develop smart contracts in Vyper

Nomic Foundation's recommended bundle of Hardhat plugins (ethers based)

Signature validation library aiming to verify all different signature types for Ethereum and other EVM chains, including smart contract signatures (EIP 1271) and typed data (EIP 712)

Remove Hardhat console.log imports and calls from Solidity source files

Lightweight utility for decoding function parameters from Ethereum transactions.

Hardhat plugin for hardhat-deploy to push contracts to tenderly