The full stack toolkit to build onchain app UX.
A cryptocurrency trading API with more than 100 exchanges in JavaScript / TypeScript / Python / C# / PHP / Go
Spark SDK
BitGo JavaScript SDK
Ledger Hardware Wallet Bitcoin Application Client
Spark Issuer SDK for token issuance
Reference implementation for the did:btcr2 DID method written in TypeScript and JavaScript. did:btcr2 is a censorship resistant DID Method using the Bitcoin blockchain as a Verifiable Data Registry to announce changes to the DID document. This is the core
Interaction helper for your Lightning Network daemon
CLI for interacting with did-btcr2-js, the JavaScript/TypeScript reference implementation of the did:btcr2 method. Exposes various parts of multiple packages in the did-btcr2-js monorepo.
A simple package to manage BIP-32 wallets for the bitcoin blockchain.
hvip MCP Server — 365 工具覆盖 97.7% OKX REST API,含交易/行情/资金/策略/预测市场/技术指标/Smart Money(非 OKX 官方产品)
Spark SDK for Bare runtime
Fast, tree-shakeable Base58 encoder/decoder with TypeScript support
Custom bitcoincash client and utilities used by XChainJS clients
React Native bindings for the Breez SDK - Nodeless (Spark Implementation)
Lendaswap Client SDK - Pure TypeScript, React Native compatible
Info Server for Edge Wallet and SDK
Unifold Connect React Native SDK - Crypto deposit and onramp for React Native/Expo
NPM installer for the OpenClaw Agent Wallet local runtime.
EU AI Act Article 50 cryptographic transparency receipts, anchored to Bitcoin. The TypeScript SDK with the Stripe-style attach() pattern.
Framework-agnostic SDK for Routstr API interactions
Library exposing methods for the creation and consumption of Bitcoin transactions pertaining to Babylon's Bitcoin Staking protocol.
BSV Blockchain Script Templates
TypeScript SDK for autonomous AI agents to earn and spend sats via Lightning escrow contracts.