JSPM

BIP32 Hierarchal Deterministic Node operations.

Wallet management utilities for KeyStore and Crowdsale JSON wallets.

Contract abstraction meta-class for ethers.

Solidity coder for non-standard (tight) packing.

String utility functions.

Recursive-Length Prefix (RLP) coder.

A tool for processing JSON-RPC messages

Elliptic curve library functions for the secp256k1 curve.

Ethereum JavaScript API

Base-X without Buffer.

Random utility functions for ethers.

Word lists for BIP39 wallets.

The PBKDF2 password-pbased key derivation function for ethers.

A JavaScript Ethereum provider that connects to the wallet over a stream

A simple module for generating ENS namehashes per spec https://github.com/ethereum/EIPs/issues/137

A small toolset for streaming JSON-RPC data and matching requests and responses

Create an Ethereum provider using a JSON-RPC engine or middleware

Mocha reporter which shows gas used per unit test.

Polling Controller is the base for controllers that polling by networkClientId

Provides scaffolding for controllers as well a communication system for all controllers

A library containing the core functionality for building MetaMask Snaps

Provides an interface to the currently selected network via a MetaMask-compatible provider object

EVM tooling used for coin integrations & app bindings

A collection of utilities for MetaMask Snaps

Multichain network controller

Collection of Safe singleton deployments

Defines a CAIP-25 based endowment permission and helpers for interfacing with it

Logs errors to an error reporting service such as Sentry

Periodically calculates gas fee estimates based on various gas limits as well as other data displayed on transaction confirm screens

A simple node module that exports the [Ethereum ABI](1) for [ERC 20](2) compatible tokens.

Backup and rehydrate SRP(s) using social login and password

Multicoin address validator for Bitcoin and other Altcoins.

Controllers for MetaMask Snaps

common utilities to access and format responses from auth network

Snap sandbox environments for executing SES javascript

Maintains a periodically updated list of approved and unapproved website origins

A module for getting method signature info from an ethereum method signature.

Manages a list of recipient addresses associated with nicknames

Provides an interface to the currently selected networkClientId for a given domain

foundryup

Design tokens to be used throughout MetaMask products

SDK that facilitates the interaction with Safe Smart Accounts

Manages New MetaMask decentralized Notification system

MetaMask example snap demonstrating preinstalled Snaps

Manages requests that require user approval

SDK that facilitates the interaction with the Safe Transaction Service API

Collection of Safe modules contract deployments

Data and convenience functions shared by multiple packages

Manages logging data to assist users and support staff

The profile sync helps developers synchronize data across multiple clients and devices in a privacy-preserving way. All data saved in the user storage database is encrypted client-side to preserve privacy. The user storage provides a modular design, givin

Mediates access to JSON-RPC methods, used to interact with pieces of the MetaMask stack, via middleware for json-rpc-engine

Type definitions for the Snowbridge parachain

Shims required for ethers in constrained environments.

MetaMask Snaps JSON-RPC method implementations

Stores identities seen in the wallet and manages interactions such as signing

Manages internal accounts

Manages user-configurable settings for MetaMask

Processes signing requests in order to sign arbitrary and typed data

Stores transactions alongside their periodically updated statuses and manages interactions such as approval and cancellation

Controllers which manage interactions involving ERC-20, ERC-721, and ERC-1155 tokens (including NFTs)

Utilities for building MetaMask applications

Manages bridge-related quote fetching functionality for MetaMask

This package is responsible for getting transactions from our Bitcoin and Solana snaps

Controller to group account together based on some pre-defined rules

The RemoteFeatureFlagController manages the retrieval and caching of remote feature flags

Manages bridge-related status fetching functionality for MetaMask

The MetaMask Node module template

Experimental libraries for ethers. These should not be considered stable.

JSON-RPC methods and middleware to support the MetaMask Multichain API

Types for use with the Safe Core SDK packages

Service to manage multichain accounts

Stores and suggests names for values such as Ethereum addresses

Creates user operations and manages their life cycle

highlight.js syntax definition for Ethereum's Solidity language

@trezor/connect plugin for Ethereum

An ENS interface module built on EthJS.

Manages state for earning features and coordinates interactions between staking services, SDK integrations, and other controllers to enable users to participate in various earning opportunities

Manages delegations for MetaMask

Design System React Native

Stores and manages interactions with signing requests

Manages in-app announcements

Implements the JSON-RPC methods for managing permissions as referenced in EIP-2255 and MIP-2 and inspired by MIP-5, but supporting chain-agnostic permission caveats in alignment with @metamask/multichain-api-middleware

A history of deployments of the Delegation Framework

Maps ENS names to their resolved addresses by chain id

Contains logic for rate-limiting API endpoints by requesting origin

Controller with middleware for logging requests and responses to restricted and permissions-related methods

Provides an interface to the currently enabled network using a MetaMask-compatible provider object

Manages token search and discovery through the Portfolio API

Manages requests that for app metadata

Design System Tailwind CSS preset for MetaMask projects

Consolidates the state from multiple controllers into one

Design System twrnc Preset

Ethereum multisig contract

Hardware Wallet support for ethers.

Javascript library for fetching trusted token pricing data from Redstone data ecosystem

A simple module for generating ENS namehashes per spec https://github.com/ethereum/EIPs/issues/137

Techincal Indicators written in javascript

Design system react ui components

Web3-Onboard makes it simple to connect Ethereum hardware and software wallets to your dapp. Features standardized spec compliant web3 providers for all supported wallets, framework agnostic modern javascript UI with code splitting, CSS customization, mul

Embed script for Torus

Web3-Onboard makes it simple to connect Ethereum hardware and software wallets to your dapp. Features standardised spec compliant web3 providers for all supported wallets, framework agnostic modern javascript UI with code splitting, CSS customization, mul

Safe Core SDK Utilities

A type-safe message bus library

Coinbase Pro API for Node.js, written in TypeScript and covered by tests.

The Delegation Toolkit built on top of Viem - a library for interacting with DeleGator Smart Accounts

WalletConnect SDK module for connecting to Web3-Onboard. Web3-Onboard makes it simple to connect Ethereum hardware and software wallets to your dapp. Features standardised spec compliant web3 providers for all supported wallets, framework agnostic modern

Injected wallet module for connecting browser extension and mobile wallets to Web3-Onboard. Web3-Onboard makes it simple to connect Ethereum hardware and software wallets to your dapp. Features standardised spec compliant web3 providers for all supported

Wallet address validator for Bitcoin and other Altcoins.

Biconomy Client SDK types

Web3 client extended with Alchemy and browser provider integration.

ABIs mapped to versions of the Delegation Framework contracts

Utilities for decoding and encoding Hedera Hashgraph transactions for hethers.

Bytes utility functions for ethers.

An Abstract Class for desribing an Ethereum Signer for ethers.

Utility fucntions for managing web requests for ethers.

Node Client that comminucates with indexer service to fetch necessary details for the Smart Account

Logger utility functions for ethers.

An Abstract Class for describing an Ethereum Provider for ethers.

Utilities for handling Ethereum Addresses for ethers.

Utilities for decoding and encoding Ethereum transaction for ethers.

An Abstract Class for describing an Hedera Hashgraph Signer for hethers.

Common Ethereum constants used for ethers.

Elliptic curve library functions for the secp256k1 curve.

Network definitions for ethers.

Recursive-Length Prefix (RLP) coder.

Coinbase SDK wallet module for connecting to Web3-Onboard. Web3-Onboard makes it simple to connect Ethereum hardware and software wallets to your dapp. Features standardised spec compliant web3 providers for all supported wallets, framework agnostic moder

A collection of React hooks for integrating Web3-Onboard in to React and Next.js projects. Web3-Onboard makes it simple to connect Ethereum hardware and software wallets to your dapp. Features standardised spec compliant web3 providers for all supported w

Hash utility functions for Ethereum.

Minimal utilties to make working with the delegation framework easier

Solidity contract visualisation tool.

A tiny library to work with Substrate and Ethereum addresses and do some more

Utilities and Classes for parsing, formatting and managing Ethereum ABIs.

BigNumber library used in ethers.js.

Properties utility functions for ethers.

String utility functions.

The keccak256 hash function for ethers.

Contract abstraction meta-class for hethers.

Maintains a periodically updated list of approved and unapproved website origins

Creates user operations and manages their life cycle

CoinPayments is a cloud wallet solution that offers an easy way to integrate a checkout system for numerous cryptocurrencies. Coinpayments now also offers coin conversion via Shapeshift.io.

Veramo KMS implementation that provides Ed25519 and secp256k1 crypto

Classes for managing, encrypting and decrypting ECDSA private keys as a Signer for hethers.

A CLI for developing MetaMask Snaps

Network definitions for hethers.

Wallet management utilities for KeyStore

BIP32 Hierarchal Deterministic Node operations.

Stores and suggests names for values such as Ethereum addresses

Logger utility functions for hethers.

Unit conversion functions for Hedera Hashgraph.

Singleton factory used by Safe related contracts

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

A tool for processing JSON-RPC messages

The profile sync helps developers synchronize data across multiple clients and devices in a privacy-preserving way. All data saved in the user storage database is encrypted client-side to preserve privacy. The user storage provides a modular design, givin

BTC Markets API Client for Node.JS

Manages logging data to assist users and support staff

Simplify dApp creation

Stores transactions alongside their periodically updated statuses and manages interactions such as approval and cancellation

Polling Controller is the base for controllers that polling by networkClientId

Controllers which manage interactions involving ERC-20, ERC-721, and ERC-1155 tokens (including NFTs)

Data and convenience functions shared by multiple packages

A Webpack plugin to build MetaMask Snaps with Webpack

Stores identities seen in the wallet and manages interactions such as signing

Periodically calculates gas fee estimates based on various gas limits as well as other data displayed on transaction confirm screens

An Abstract Class for describing an Hedera Hashgraph Provider for hethers.

Safe module for connecting to Web3-Onboard. Web3-Onboard makes it simple to connect Ethereum hardware and software wallets to your dapp. Features standardised spec compliant web3 providers for all supported wallets, framework agnostic modern javascript UI

Hedera Hashgraph Providers for hethers.

Manages New MetaMask decentralized Notification system

Mediates access to JSON-RPC methods, used to interact with pieces of the MetaMask stack, via middleware for json-rpc-engine

SDK for Safe Smart Accounts with support for ERC-4337 and Relay

Umbrella package for most common Hethers libraries.

Ledger hardware wallet module for connecting to Web3-Onboard. Web3-Onboard makes it simple to connect Ethereum hardware and software wallets to your dapp. Features standardized spec compliant web3 providers for all supported wallets, framework agnostic mo

Common EVM & Hedera Hashgraph constants used for hethers.

Utilities for handling EVM Addresses for hethers.

Manages state for earning features and coordinates interactions between staking services, SDK integrations, and other controllers to enable users to participate in various earning opportunities

Manages in-app announcements

Stores and manages interactions with signing requests

Defines a CAIP-25 based endowment permission and helpers for interfacing with it

Maps ENS names to their resolved addresses by chain id

Manages internal accounts

Consolidates the state from multiple controllers into one

Manages requests that require user approval

Controller with middleware for logging requests and responses to restricted and permissions-related methods

Provides an interface to the currently selected network via a MetaMask-compatible provider object

Manages token search and discovery through the Portfolio API

Manages bridge-related quote fetching functionality for MetaMask

Service to manage multichain accounts

Multichain network controller

Typescript port of web3.js

Backup and rehydrate SRP(s) using social login and password

A library for interfacing with ckETH.

Manages user-configurable settings for MetaMask

Create an Ethereum provider using a JSON-RPC engine or middleware

Utilities for building MetaMask applications

Manages a list of recipient addresses associated with nicknames

Provides an interface to the currently selected networkClientId for a given domain

Sample package to illustrate best practices for controllers

A small toolset for streaming JSON-RPC data and matching requests and responses

Implements the JSON-RPC methods for managing permissions as referenced in EIP-2255 and MIP-2 and inspired by MIP-5, but supporting chain-agnostic permission caveats in alignment with @metamask/multichain-api-middleware

Manages delegations for MetaMask

This package is responsible for getting transactions from our Bitcoin and Solana snaps

The SHA2 family hash functions and HMAC functions for ethers.

MetaMask SDK wallet module for connecting to Web3-Onboard. Web3-Onboard makes it simple to connect Ethereum hardware and software wallets to your dapp. Features standardised spec compliant web3 providers for all supported wallets, framework agnostic moder

JSON-RPC methods and middleware to support the MetaMask Multichain API

Logs errors to an error reporting service such as Sentry

Processes signing requests in order to sign arbitrary and typed data

Contains logic for rate-limiting API endpoints by requesting origin

Multicoin address validator for Bitcoin and other Altcoins ported to TypeScript.

Veramo ethr-did based identity controller plugin.

The RemoteFeatureFlagController manages the retrieval and caching of remote feature flags

Provides scaffolding for controllers as well a communication system for all controllers

Controller to group account together based on some pre-defined rules

A Jest preset for end-to-end testing MetaMask Snaps, including a Jest environment, and a set of Jest matchers

Funkit core SDK provides feature-rich and extensible smart wallets built on account abstraction

A type-safe message bus library

Web3-Onboard makes it simple to connect Ethereum hardware and software wallets to your dapp. Features standardised spec compliant web3 providers for all supported wallets, framework agnostic modern javascript UI with code splitting, CSS customization, mul

A simulation framework for MetaMask Snaps, enabling headless testing of Snaps in a controlled environment

foundryup

Trust Wallet SDK wallet module for connecting to Web3-Onboard. Web3-Onboard makes it simple to connect Ethereum hardware and software wallets to your dapp. Features standardized spec compliant web3 providers for all supported wallets, framework agnostic m

Manages bridge-related status fetching functionality for MetaMask

Manages requests that for app metadata

Singleton factory used by Safe related contracts

Rango Exchange Basic SDK for dApps

Collection of smart contracts for the Realitio fact verification platform

Ledger EVM Coin integration

Ethereum multisig contract

Ledger Hardware Wallet Ethereum Application API

Provides an interface to the currently enabled network using a MetaMask-compatible provider object

SDK that provides the basic tools to interact with the Safe Smart Account.

Biconomy Bundler package to interact with any bundler node as per ERC4337 standard

Rango Exchange SDK for dApps

Trezor hardware wallet module for connecting to Web3-Onboard. Web3-Onboard makes it simple to connect Ethereum hardware and software wallets to your dapp. Features standardised spec compliant web3 providers for all supported wallets, framework agnostic mo

A collection of Vue Composables for integrating Web3-Onboard in to a Vue or Nuxt project. Web3-Onboard makes it simple to connect Ethereum hardware and software wallets to your dapp. Features standardized spec compliant web3 providers for all supported wa

Tools for handling questions in the reality.eth fact verification platform

ASM libraries and tools for the Ethereum EVM.

Ledger signer for ethers v6.

Crypto address validator for Bitcoin and other Altcoins, forked to be used with typescript

Provide easy conversion between crypto symbol and name

XinFin XDC Network JavaScript API

Torus SDK wallet module for connecting to Web3-Onboard. Web3-Onboard makes it simple to connect Ethereum hardware and software wallets to your dapp. Features standardized spec compliant web3 providers for all supported wallets, framework agnostic modern j

bitget-wallet SDK wallet module for connecting to Web3-Onboard. Web3-Onboard makes it simple to connect Ethereum hardware and software wallets to your dapp. Features standardized spec compliant web3 providers for all supported wallets, framework agnostic

Javascript library for fetching trusted token pricing data from Redstone data ecosystem

Infinity Wallet SDK wallet module for connecting to Web3-Onboard. Web3-Onboard makes it simple to connect Ethereum hardware and software wallets to your dapp. Features standardized spec compliant web3 providers for all supported wallets, framework agnosti

Sequence is the smartest Web3 wallet. Easy, fun and secure.

Taho SDK wallet module for connecting to Web3-Onboard. Web3-Onboard makes it simple to connect Ethereum hardware and software wallets to your dapp. Features standardised spec compliant web3 providers for all supported wallets, framework agnostic modern ja

Biconomy Paymaster to interact with Paymaster Services that interacts with ( veriying and token ) paymasters

Package for the LSP17 Contract Extension standard

EVM specific base implementation

Official Ren JavaScript SDK for bridging crypto assets cross-chain.

Controller for managing gator permissions with profile sync integration

Includes a controller and middleware that implements a request queue