JSPM

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.

BigNumber library used in ethers.js.

An Abstract Class for describing an Ethereum Provider for ethers.

Base64 coder.

Hash utility functions for Ethereum.

Bytes utility functions for ethers.

Classes for managing, encrypting and decrypting Ethereum private keys as a Signer for ethers.

Utilities for handling Ethereum Addresses for ethers.

Ethereum Name Service (ENS) Name Normalizer

Unit conversion functions for Ethereum.

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

The keccak256 hash function for ethers.

Contract abstraction meta-class for ethers.

Properties utility functions for ethers.

Utility fucntions for managing web requests for ethers.

An Abstract Class for desribing an Ethereum Signer for ethers.

Solidity coder for non-standard (tight) packing.

Utilities for decoding and encoding Ethereum transaction for ethers.

Wallet management utilities for KeyStore and Crowdsale JSON wallets.

String utility functions.

The SHA2 family hash functions and HMAC functions for ethers.

Logger utility functions for ethers.

Ethereum Providers for ethers.

Common Ethereum constants used for ethers.

Network definitions for ethers.

BIP32 Hierarchal Deterministic Node operations.

A tool for processing JSON-RPC messages

Recursive-Length Prefix (RLP) coder.

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

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

EVM tooling used for coin integrations & app bindings

A library containing the core functionality for building MetaMask Snaps

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

Mocha reporter which shows gas used per unit test.

A collection of utilities for MetaMask Snaps

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

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

Controllers for MetaMask Snaps

Snap sandbox environments for executing SES javascript

common utilities to access and format responses from auth network

A block tracker for the Ethereum blockchain. Keeps track of the latest block

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

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

Design tokens to be used throughout MetaMask products

MetaMask example snap demonstrating preinstalled Snaps

Maintains a periodically updated list of approved and unapproved website origins

Polling Controller is the base for controllers that polling by networkClientId

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

Manages New MetaMask decentralized Notification system

Controller for managing gator permissions with profile sync integration

Core backend services for MetaMask

Manages a list of recipient addresses associated with nicknames

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

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

Multichain network controller

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

Ethereum-related json-rpc-engine middleware

Manages internal accounts

A type-safe message bus library

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

Manages requests that require user approval

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

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

Low level core functionality for interacting with the Delegation Framework

Manages bridge-related status fetching functionality for MetaMask

A history of deployments of the Delegation Framework

Logs errors to an error reporting service such as Sentry

Manages delegations for MetaMask

foundryup

Collection of Safe singleton deployments

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

Permission types for the ERC-7715

Service to manage multichain accounts

Shared types for design system libraries

Processes signing requests in order to sign arbitrary and typed data

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

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

Manages logging data to assist users and support staff

Data and convenience functions shared by multiple packages

Implements the JSON-RPC methods for sending multiple calls from the user's wallet, and checking their status, as referenced in EIP-5792

MetaMask Snaps JSON-RPC method implementations

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

Manages bridge-related quote fetching functionality for MetaMask

An ENS interface module built on EthJS.

Sample package to illustrate best practices for controllers

Manages user-configurable settings for MetaMask

The RemoteFeatureFlagController manages the retrieval and caching of remote feature flags

Utilities for building MetaMask applications

The MetaMask Node module template

Design System Tailwind CSS preset for MetaMask projects

Stores and manages interactions with signing requests

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

Design System React Native

Consolidates the state from multiple controllers into one

Multicoin address validator for Bitcoin and other Altcoins.

Manages token search and discovery through the Portfolio API

SDK that facilitates the interaction with Safe Smart Accounts

Manages requests that for app metadata

Design system react ui components

Collection of Safe modules contract deployments

Type definitions for the Snowbridge parachain

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 in-app announcements

Stores and suggests names for values such as Ethereum addresses

Handle user subscription

Types for use with the Safe Core SDK packages

highlight.js syntax definition for Ethereum's Solidity language

SDK that facilitates the interaction with the Safe Transaction Service API

Shims required for ethers in constrained environments.

Creates user operations and manages their life cycle

Design System twrnc Preset

@trezor/connect plugin for Ethereum

Manages alternate payment strategies to provide required funds for transactions in MetaMask

Contains logic for rate-limiting API endpoints by requesting origin

Maps ENS names to their resolved addresses by chain id

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

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

Controller handling shield transaction coverage logic

Implements internal JSON-RPC methods for EIP-7702 account upgrade functionality

Controller handling shield subscription claims logic

MetaMask example snap demonstrating the use of the Ethereum Provider API and `endowment:ethereum-provider` permission

MetaMask example snap demonstrating the use of WebAssembly and the `endowment:webassembly` permission

The test snaps website for MetaMask Snaps, used for end-to-end testing

MetaMask example snap demonstrating the use of `snap_getBip44Entropy`

MetaMask example snap demonstrating the use of `snap_getEntropy`

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

MetaMask example Snap demonstrating the use of cronjobs with ISO 8601 durations in Snaps

MetaMask example Snap demonstrating a send flow with UI components

MetaMask example snap demonstrating the use of the `onStart`, `onInstall`, and `onUpdate` lifecycle hooks

MetaMask example snap demonstrating the use of `snap_notify`

MetaMask example Snap demonstrating the use of background events

Techincal Indicators written in javascript

Ethereum multisig contract

MetaMask example Snap demonstrating the use of `endowment:protocol`

MetaMask example snap demonstrating the use of `snap_getBip32Entropy`

MetaMask example snap demonstrating the use of `snap_manageState`

MetaMask example Snap demonstrating the use of `snap_getPreferences`

MetaMask example snap demonstrating the use of cronjobs in snaps

MetaMask example snap demonstrating the use of the `endowment:network-access` permission in snaps

Embed script for Torus

MetaMask example snap demonstrating the use of interactive UI

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

Safe Core SDK Utilities

Hardware Wallet support for ethers.

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

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

ABIs mapped to versions of the Delegation Framework contracts

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

Web3 client extended with Alchemy and browser provider integration.

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

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

Minimal utilties to make working with the delegation framework easier

A library for interfacing with ckETH.

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

A tool for processing JSON-RPC messages

Creates user operations and manages their life cycle

Stores and suggests names for values such as Ethereum addresses

Maintains a periodically updated list of approved and unapproved website origins

Stores and manages interactions with signing requests

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

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

Maps ENS names to their resolved addresses by chain id

Manages requests that require user approval

Manages in-app announcements

Data and convenience functions shared by multiple packages

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

Multichain network controller

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

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

Wallet address validator for Bitcoin and other Altcoins.

Singleton factory used by Safe related contracts

Handle user subscription

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

Controller handling shield transaction coverage logic

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

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

Manages logging data to assist users and support staff

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

Manages token search and discovery through the Portfolio API

Controller for managing gator permissions with profile sync integration

Solidity contract visualisation tool.

Manages delegations for MetaMask

Service to manage multichain accounts

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

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

Manages alternate payment strategies to provide required funds for transactions in MetaMask

Sample package to illustrate best practices for controllers

Manages New MetaMask decentralized Notification system

Polling Controller is the base for controllers that polling by networkClientId

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

Veramo KMS implementation that provides Ed25519 and secp256k1 crypto

Processes signing requests in order to sign arbitrary and typed data

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

Manages bridge-related quote fetching functionality for MetaMask

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

Contains logic for rate-limiting API endpoints by requesting origin

Manages user-configurable settings for MetaMask

Utilities for building MetaMask applications

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

Ethereum-related json-rpc-engine middleware

Manages bridge-related status fetching functionality for MetaMask

Logs errors to an error reporting service such as Sentry

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

A type-safe message bus library

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

The RemoteFeatureFlagController manages the retrieval and caching of remote feature flags

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

Recursive-Length Prefix (RLP) coder.

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

Manages a list of recipient addresses associated with nicknames

Network definitions for ethers.

foundryup

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

Common Analytics controller for event tracking

Manages internal accounts

Typescript port of web3.js

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

Implements the JSON-RPC methods for sending multiple calls from the user's wallet, and checking their status, as referenced in EIP-5792

Core backend services for MetaMask

Turnkey CCIP-Read Handler

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.

Consolidates the state from multiple controllers into one

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

Manages requests that for app metadata

Bytes utility functions for ethers.

An Abstract Class for desribing an Ethereum Signer for ethers.

Utility fucntions for managing web requests for ethers.

Elliptic curve library functions for the secp256k1 curve.

Common Ethereum constants used for ethers.

A block tracker for the Ethereum blockchain. Keeps track of the latest block

Implements internal JSON-RPC methods for EIP-7702 account upgrade functionality

Utilities for decoding and encoding Hedera Hashgraph transactions for hethers.

Controller handling shield subscription claims logic

Hash utility functions for Ethereum.

Veramo ethr-did based identity controller plugin.

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