JSPM

Throw, identify, and decode Solana JavaScript errors

Codecs for numbers of different sizes and endianness

Core types and helpers for encoding and decoding byte arrays on Solana

Codecs for strings of different sizes and encodings

A library for encoding and decoding any data structure

Codecs for various data structures

Solana Javascript API

Managing and serializing Rust-like Option types in JavaScript

Helpers for generating account addresses

Helpers for asserting that a JavaScript environment supports certain features necessary for the operation of the Solana JavaScript SDK

Type utilties for creating nominal/branded types in TypeScript

Type definitions for values used in the Solana RPC, and helper functions for working with them

Helpers for generating and transforming key material

Shared generic JSON RPC specifications

Helpers for creating transaction messages

Functional JavaScript helpers

Helpers for creating transaction instructions

Helpers for representing, fetching and decoding Solana accounts

An abstraction layer over signing messages and transactions in Solana

An RPC transport that uses HTTP requests

A generic implementation of JSON RPC Subscriptions using proxies

Helpers for creating subscription-based event emitters

A generic implementation of JSON RPCs using proxies

Helpers for creating and serializing transactions

A library for subscribing to Solana RPC notifications

Helpers for defining programs and resolving program errors

Helpers for using JavaScript promises

An RPC Subscriptions transport that uses WebSockets

Reusable transformers for patching RPC inputs and outputs

A library for sending JSON RPC requests to Solana RPCs

Defines all default Solana RPC subscriptions as types

Helpers for confirming Solana transactions

Type definitions for parsed types used in the Solana RPC

An abstraction layer over signing messages and transactions in Solana

Defines all default Solana RPC methods as types

Solana Javascript API

Ability to test bloom filters for ethereum.

Construct, plan and execute transactions from multiple instructions.

Crockford base-32 checksum encoding

Helpers for encoding and decoding messages according to the offchain message specification

Core helpers for creating and extending Kit clients with plugins

🔌 TypeScript bindings for Ethereum smartcontracts

Multi-chain cryptocurrency SDK for TypeScript — unified API for Bitcoin, Ethereum, Litecoin, Dogecoin, Bitcoin Cash, Polygon, Arbitrum, and any EVM-compatible chain. Create wallets, query balances, send transactions, and manage tokens and NFTs across UTXO

Command line tool for developing ambitious ember.js apps

Arweave JS client library

Zero-config TypeChain support for Hardhat

High-level javascript interface for blockchain communication

Encoding, crypto, and utility helpers for Taquito.

A light weight universal JavaScript base58 encoder / decoder.

Local Tezos operation forging for Taquito.

The best way to connect a wallet

A library and cli to create a local blockchain for fast Ethereum development.

Hyperliquid API SDK for all major JS runtimes, written in TypeScript.

A pure and powerful JavaScript Bitcoin library.

A modular set of compiler APIs empowering the next generation of Solidity code analysis and developer tooling. Written in Rust and distributed in multiple languages.

Resolves Custom Program Errors from Solana program logs or error codes.

Shared types, interfaces, and primitives for Taquito packages.

Hardhat Ignition is a declarative system for deploying smart contracts on Ethereum. It enables you to define smart contract instances you want to deploy, and any operation you want to run on them. By taking over the deployment and execution, Hardhat Ignit

MultiversX SDK for JavaScript and TypeScript

Hardhat Ignition is a declarative system for deploying smart contracts on Ethereum. It enables you to define smart contract instances you want to deploy, and any operation you want to run on them. By taking over the deployment and execution, Hardhat Ignit

STX helper utilities for Stacks blockchain

Lottery smart contract for Stacks blockchain

Accept crypto tips on Stacks blockchain - decentralized tip jar for content creators

Decentralized on-chain polls on Stacks blockchain - create and vote on proposals

On-chain guestbook contract for Stacks

Accept crypto tips on Stacks blockchain - decentralized tip jar for content creators

Blind auction contract for Stacks

Clarity utility functions for Stacks developers

Raffle smart contract for Stacks

Staking contract for Stacks blockchain

DAO governance contract for Stacks blockchain

Daily check-in rewards contract for Stacks

SDK for interacting with Stacks Voting contracts

SDK for interacting with Stacks Tip Jar contracts

Lending protocol contract for Stacks

NFT marketplace contract for Stacks

Subscription management contract for Stacks

Michelson parser, validator, and formatter for Taquito.

Developer tools for Stacks ecosystem

Escrow service smart contract for Stacks

NFT minting contract for Stacks blockchain

Decentralized on-chain polls on Stacks blockchain - create and vote on proposals

Crowdfunding smart contract for Stacks blockchain

Clarity counter smart contract module for Stacks blockchain

Utility library for Stacks smart contracts

TypeScript client and types for the Tezos RPC used by Taquito.

Points and rewards system for Stacks blockchain

Multi-signature wallet for Stacks

TypeScript SDK for building wallets, dapps, and tooling on Tezos.

The Ethers extension to Hardhat Ignition. Hardhat Ignition is a declarative system for deploying smart contracts on Ethereum. It enables you to define smart contract instances you want to deploy, and any operation you want to run on them. By taking over t

React hooks and providers for ChainGate — integrate multi-chain cryptocurrency wallets into React apps with two hooks. Create, import, and manage wallets across Bitcoin, Ethereum, and 30+ blockchains with zero boilerplate and automatic state synchronizati

Software signer implementations and signing utilities for Taquito.

Decode ethers.js smart contract errors into human-readable messages

Avalanche Platform JS Library

TON assembler and disassembler

Output Solidity contract sizes with Hardhat

Base58Check encoding

ultra-lightweight library for Bitcoin Cash, Bitcoin, and Bitauth

Typescript client for Polymarket's CLOB

TypeScript interfaces for building pluggable Solana clients

Core utilities for building Solana program clients

A module to store and interact with blocks

Avalanche Platform JS Library

Stacks blockchain address validation and formatting utilities

Flare Platform JS Library

A module to store and interact with blocks

An easy-to-use JavaScript API for the Internet Computer.

Parse and compute Stacks on-chain transaction statistics

TypeScript SDK for the STX Canvas — a 100x100 collaborative pixel grid on Stacks

The official TypeScript SDK for StxPet

TypeScript SDK for interacting with the Stacks Wrapped smart contract

A professional, class-based TypeScript SDK for the Klock smart contract on Stacks.

A collection of utilities and constants for NNS/SNS projects.

JavaScript and TypeScript library to interact with the Internet Computer

The Codex SDK for JavaScript/Typescript. It provides generated types and convenient ways to access the graphql api.

Helpers for converting from legacy web3js classes

Open-source specification for interacting with digital assets on Solana

Celo's ContractKit to interact with Celo network

Moralis SDK for JavaScript and TypeScript

Utilities for Concerto Modeling Language

Parser for Concerto CTO files

Connecting a wallet, made simple.

Wallet base implementation

Light Toolkit for connecting with the Celo network

Local wallet implementation

MPL Auction House JavaScript API.

Cryptographic functions for ethereum and how to use them with web3 and solidity

Generates SDK API from solana contract IDL.

Remote wallet implementation

Utility functions for @ganache packages

MPL Candy Machine Core JavaScript API. This MPL package is for the current generation of the Candy Machine Core (a.k.a. Candy Machine V3).

Ledger hardware wallet signer integration for Taquito.

MPL Candy Guard JavaScript API. This MPL package is for the current generation of the Candy Guard

A library for interfacing with the Internet Computer's Network Nervous System.

An Ethereum SDK for building Web3 wallets and applications.

Ledger wallet implementation

Recursive Length Prefix Encoding Module

> TODO: description

> TODO: description

JavaScript library to mock web3 responses either by emulating web3 wallets or web3 RPC requests.

> TODO: description

High-performance Laserstream gRPC client with automatic reconnection

Ganache's server/provider options TypeScript types

TypeScript client for Polymarket's CLOB

Solana helper functions

The Viem extension to Hardhat Ignition. Hardhat Ignition is a declarative system for deploying smart contracts on Ethereum. It enables you to define smart contract instances you want to deploy, and any operation you want to run on them. By taking over the

a modern javascript/typescript client library for interacting with the Solana blockchain

A pure and powerful JavaScript Dash library.

The official SDK for integrating Across bridge into your dapp.

TypeScript SDK for interacting with the Coin Flip smart contract on Stacks blockchain

Concerto metamodel utilities

TypeScript SDK for interacting with the Vote Battle smart contract on Stacks blockchain

TypeScript SDK for interacting with the Dice Roll smart contract on Stacks blockchain

Multicall allows multiple smart contract constant function calls to be grouped into a single call and the results aggregated into a single result

Contains constants, types and interfaces used across the SDK and different serialization libraries

TypeScript SDK for interacting with the Number Guess smart contract on Stacks blockchain

TypeScript SDK for interacting with the StacksPix pixel board smart contract on Stacks blockchain

TypeScript types and helpers for The Graph Networks Registry

JavaScript library to mock web3 responses either by emulating web3 wallets or web3 RPC requests.

TypeScript SDK for interacting with the Clicker smart contract on Stacks blockchain

Multi chain wallet aggregator for web3Auth

SDK for CeloClicker - tap-to-earn clicker game on Celo blockchain

CAIP standard utils

This is the core package for NEAR Wallet Selector.

MPL Metaplex JavaScript API.

MPL Token Vault JavaScript API.

MPL Token Metadata JavaScript API.

Types and utilities functions between Mesh and cardano-js-sdk

SDK for CeloVoteBattle - on-chain A vs B voting polls on Celo blockchain

TypeScript SDK for the Celo Number Guess MiniApp

A polyfill that adds Ed25519 key manipulation capabilities to `SubtleCrypto` in environments where it is not yet supported

TypeScript SDK for the Celo Dice Roll MiniApp

SDK for CeloPixels - collaborative pixel art canvas on Celo blockchain

TypeScript SDK for the Celo Coin Flip MiniApp

E2E testing SDK for Stacks blockchain dApps. Playwright + real transactions.

Export Ethereum smart contract ABIs on compilation

LI.FI Wallet Management solution.

Wallets - https://meshjs.dev/apis/wallets

Multi chain wallet aggregator for web3Auth

General cryptographic functions for use with Lisk-related software

React hooks for building Solana apps

Mnemonic passphrase helpers for use with Lisk-related software

Simple, functional big number library for up to 256-bit (32-byte) numbers that outputs decimal strings, with hex, binary, octal, and Buffer decoding/encoding.

Helper utilities built on top of coin-flip-sdk for common dApp integration patterns.

Helper utilities built on top of vote-battle-sdk for common dApp integration patterns.

Helper utilities built on top of stacks-pix-sdk for common dApp integration patterns.

Helper utilities built on top of number-guess-sdk for common dApp integration patterns.

Transactions - https://meshjs.dev/apis/transaction

Helper utilities built on top of clicker-stacks-sdk for common dApp integration patterns.

Helps dApps connect to the TRON network via WalletConnect.

A Symbolic Ethereum Virtual Machine (EVM) bytecode decompiler & analyzer library & CLI

Helper utilities built on top of dice-roll-sdk for common dApp integration patterns.

Load Ledger Connect Kit at runtime, a library for dApps to integrate with the Ledger Extension and Ledger Live

A solidity preprocessor and flattener CLI and library

Shared constants for Phantom Wallet SDK

SDK for writing node.js applications to interact with Hyperledger Fabric. This package encapsulates the APIs to interact with the Fabric CA to manage user certificates lifecycle such as register, enroll, renew and revoke.

Official Solium Plugin for Security-related lint rules

Mesh SDK Core - https://meshjs.dev/

UTxO RPC auto-generated spec types & stubs

Blockchain data providers - https://meshjs.dev/providers

Compile Solidity sources directly from NPM dependencies

A secretlint rule that checks for secp256k1 private keys.

The JavaScript SDK for Terra

Solidity library for advanced fixed-point math

Convert an Ethereum private key to a public key

Protocol Buffer files and generated JavaScript classes for Hyperledger Fabric

Agentic wallet CLI for Vara Network — designed for AI coding agents

Convert an Ethereum private key to a public address

This package encapsulates the common code used by the `fabric-ca-client`, `fabric-network` packages.

A client library to interact with UTxO RPC compliant endpoints

Premium SDK for interacting with Stacks smart contracts. Features high-level abstractions for Clarity contract calls, data parsing, and transaction monitoring.

Domain Resolution for blockchain domains

Designed to request proofs from the Reclaim protocol and manage the flow of claims and witness interactions.

Linter to identify and fix Style & Security issues in Solidity

Get Ethereum block number by a given date. Or blocks by a given period duration.

Helium public key utilities

Fortmatic Javascript SDK

A latency and sync speed optimized, developer friendly blockchain data indexer.

Wallet UI core

SDK for writing node.js applications to interact with Hyperledger Fabric. This package encapsulates the APIs to connect to a Fabric network, submit transactions and perform queries against the ledger.

A pure and powerful JavaScript Litecoin library.

Ui modal for web3Auth

openlogin adapter for web3auth

A latency and sync speed optimized, developer friendly blockchain data indexer.

StacksRank SDK — Decentralized ranking, analytics, and smart contract toolkit for the Stacks Bitcoin L2 ecosystem

Base eslint config for Lisk projects.

Platform-agnostic embedded provider core logic for Phantom Wallet SDK

Funkit Utils SDK centralizes all utilities & consts for usage across all funkit apps and packages.

Auth adapter for Web3auth

Data fetcher and mappings executor for EVM-based chains with enhanced exponential retry mechanism

SDK for Hyperliquid API

APIs replacing ethereumjs-* packages

Command line interface for lodestar

Stacks Runner - A Web3 endless runner game on Stacks blockchain. Earn STX and NFTs by playing!

TLD House (Solana and EVM) Javascript API

TypeORM based storage for squid mappings - Morpho fork with custom TypeORM options and rollback hooks

A collection of reusable Zod schemas and validators for common data patterns in ICP applications

A tiny zero-dependency library to format coins, primarily for crypto, with broader applications as well.

Construct and serialize Helium blockchain transaction primatives

Funkit Chains SDK centralizes chain information across all funkit apps and packages.

EVI SDK — AI-powered smart contract development platform with wallet deployment, security auditing, compliance validation, and blockchain verification

Crypto lib that provides signer,crypter,hasher interface

Platform-specific binaries for @nomicfoundation/slang.

Solana Javascript API

Chain parameters required for lodestar

Javascript lib to work with ArcBlock DID

Typescript library to aid DApp development on VeChain Thor

Portis Web3 SDK

Contract read/write wrappers and ABI helpers for Stacks L2