JSPM

[Optimism] Core typescript utilities

[Optimism] L1 and L2 smart contracts for Optimism

[Optimism] Tools for working with Optimism

Universal cross-chain swaps SDK

SDK to interact with Neynar APIs (https://docs.neynar.com/reference/quickstart)

SDK for EVM chains, used in conjunction with @wormhole-foundation/sdk

[Optimism] Advanced typescript tooling used by various services

[Optimism] External (out-of-protocol) L1 and L2 smart contracts for Optimism

TippingChain SDK - On-chain tipping with USDC payouts on ApeChain

[Constellation] Keys and secrets management

[Optimism] L1 and L2 smart contracts for Optimism

[Optimism] Core typescript utilities

[Optimism] Tools for working with Optimism

The @airgap/optimism is an Optimism implementation of the ICoinProtocol interface from @airgap/coinlib-core.

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🧊 HODL Wallet - Fast CLI crypto wallet!

Supersim is a lightweight tool to simulate the Superchain locally

CLI to create decentralized applications (dapps) using [Scaffold Alchemy](https://github.com/alchemyplatform/scaffold-alchemy).

n8n node for accessing multiple blockchain networks (Ethereum, BSC, Polygon, Fantom, Avalanche, Arbitrum, Optimism, etc.) with comprehensive analytics and data retrieval capabilities

CryptAPI's Library for NodeJS

[Optimism] Service for automatically relaying L2 to L1 transactions

[Optimism] Tools for working with Optimism

<div align="center"> <br /> <br /> <a href="https://optimism.io"><img alt="Optimism" src="https://raw.githubusercontent.com/ethereum-optimism/brand-kit/main/assets/svg/OPTIMISM-R.svg" width=600></a> <br /> <h3>@eth-optimism/atst</h3> The officia

Model Context Protocol (MCP) server for gasless DEX swapping powered by OKX DEX API + Biconomy MEE

List of tokens on Ethereum and Ethereum-compatible chains

L1 and L2 smart contracts for Titan

[Constellation-Optimism] Hardhat deploy configuration plugin

MCP server for OKX DEX Analytics - comprehensive DEX aggregator analytics with multi-chain support

EVM Explorer TypeScript BlockScout V2 sdk

ElizaOS plugin for Zapper protocol integration - portfolio tracking, DeFi analytics, and blockchain data across 50+ networks

[Tokamak-Titan] Tools for working with Titan

BlockBee's Library for NodeJS

TypeScript SDK for Aryze Reforge cross-chain bridge protocol

Centralized contract addresses, constants, and token configurations for Malda Protocol

[Optimism and Boba Network] L1 and L2 smart contracts for Optimism and Boba Network

Optimism Transpiler Solc Compiler Wrapper

Tools for working with Optimism and Bobanetwork

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EVM Explorer utility sdk

[LightLink] Tools for working with LightLink

Model Context Protocol (MCP) server providing comprehensive read-only Ethereum blockchain access through Infura's infrastructure. Connect Claude Desktop, VS Code, and Cursor to 29 secure Ethereum JSON-RPC tools across 30+ networks including Ethereum, Poly

A library for retrieving the amount of ERC20 tokens held by a specific address.

[Optimism] typescript types for the indexer service

[Optimism] Hardhat deploy configuration plugin

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Analyse the optimism of a string.

ReputeX SDK for JavaScript and TypeScript

🦄 Optimism fork of core smart contracts of Uniswap V3

Command line Utillity for Ethereum stakers

free accessible nodes for Ethereum and compatible chains

A directory for stable coin addresses for different networks

[OpVinDAX] Tools for working with OpVinDAX

[Optimism] Tools for working with Optimism

SDK for enhancing censorship resistance of L2 transactions

Example of using solc-transpiler & Web3 full node in place of solc-js and other Web3 providers

optimism controller for safle vault

React comment to help transition between L1 and L2s

[Optimism] Tools for working with Optimism

[Optimism] Tools for working with Boba, fork of Optimism

[Thanos] Core typescript utilities

[Optimism] Optimistic Rollup Dev Tools Library

CLI tool for detecting gas optimization opportunities in Solidity code

A comprehensive SDK for tracking multi-asset holdings across multiple blockchain networks

A CLI tool to create Web3 applications with React, TypeScript, and popular Web3 libraries

[Optimism] L1 and L2 smart contracts for Optimism

[Suncex] Core typescript utilities

Crypto phishing & scam list and detector utility for URLs and Smart Contracts

[Optimism] L1 and L2 smart contracts for Optimism

[Optimism] Core typescript utilities

[Optimism] Core typescript utilities

Smart contracts for Optimism Fractal. https://app.charmverse.io/op-grants/page-8947154553563161

Optimism Truffle Provider Wrapper

A comprehensive SDK for tracking multi-asset holdings across multiple blockchain networks

Layer-Agnostic Optimistic Roll-Ins - A Proof of Concept.

This library streamlines building ERC-4337 UserOperations and interacting with 4337 infrastructure on the lisk superchain.

Decode optimism rollup batcher transactions

React comment to help transition between L1 and L2s

[Fvidi] Core typescript utilities

[Optimism] Hardhat deploy configuration plugin

Smart Contract library for DeFi DApp Development

[Optimism] Advanced typescript tooling used by various services

🛠 An SDK for building applications on top of zipswap.

[Optimism] Forta Agent that reports whether certain accounts have fallen below some balance

[Optimism] Tools for working with Optimism

Example of using solc-transpiler in place of solc-js

[Optimism] Tools for working with Optimism

Core library for PageDAO Hub with blockchain connections and price calculations

[Optimism] Hardhat deploy configuration plugin

[Optimism] Core typescript utilities

[Optimism] Core typescript utilities

[Optimism] Tools for working with Optimism

🛠 An SDK for building applications on top of tombswap.

[Autobahn Network] Tools for working with Autobahn Network

Crypto phishing & scam list and detector utility for URLs and Smart Contracts

🦄 Optimism fork of core smart contracts of UnderVerse Space

This is a payment gateway for Optimism sellers

[Suncex] Tools for working with Suncex

[Optimism] Tools for working with Optimism

[Optimism] L1 and L2 smart contracts for Optimism

[Optimism] L1 and L2 smart contracts for Optimism

Tools for working with Titan 2.0

A TypeScript SDK for interacting with on-chain DAO data

[Optimism] Forta Agent that reports whether certain accounts have fallen below some balance

[Optimism] External (out-of-protocol) L1 and L2 smart contracts for Optimism

SDK for enhancing censorship resistance of L2 transactions

A library for interacting with the blockchains