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@babylonlabs-io/ts-sdk

v0.7.0

Published

TypeScript SDK for Babylon protocol integrations

Vulnerabilities

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Links

Git

Maintainers

filippos47filippos47hiep.babylonlabshiep.babylonlabsvitsalisvitsalisbaby-toroviej0x0baby-toroviej0x0

Keywords

babylonbitcoinvaulttbvtrustless-bitcoin-vaultstakingdefi

Readme

@babylonlabs-io/ts-sdk

Build Status npm version

TypeScript SDK for Trustless Bitcoin Vaults

⚠️ Status: Currently under active development.

Overview

The Babylon TypeScript SDK is a production-ready toolkit for integrating Trustless Bitcoin Vaults into your applications. Currently provides comprehensive support for Trustless Bitcoin Vaults (TBV) including vault management and supported application integrations.

What Are Trustless Bitcoin Vaults?

Trustless Bitcoin Vaults (TBV) let you lock Bitcoin and use it in applications on supported chains (like lending protocols) without giving up custody. The vault protocol enables:

  • Peg-in: Lock BTC in a vault on Bitcoin to use as collateral (protocol spec)
  • Peg-out: Unlock BTC from the vault back to your wallet (protocol spec)
  • DeFi Integration: Use vaulted BTC in protocols like Aave

This SDK handles the complex Bitcoin and Ethereum interactions needed to create and manage these vaults.

Key Features

  • 🔐 Vault Management - Vault creation (Pegin), vault redemption (Pegout), and vault lifecycle operations
  • 🔌 Application Integrations - Pre-built integrations starting with Aave (DeFi lending)
  • 📦 Framework Agnostic - Works with React, Vue, Angular, Node.js, or vanilla JavaScript
  • 🎯 Type-Safe - Comprehensive TypeScript types with full IDE support
  • 🧩 Modular Design - Use only what you need via subpath exports
  • 🔧 Extensible - Easy to build custom integrations

Installation

Requirements

  • Node.js >= 24.0.0
  • Package manager: npm, yarn, or pnpm

Install

# npm
npm install @babylonlabs-io/ts-sdk viem

# yarn
yarn add @babylonlabs-io/ts-sdk viem

# pnpm
pnpm add @babylonlabs-io/ts-sdk viem

Verify Installation

import { buildPeginPsbt } from "@babylonlabs-io/ts-sdk/tbv/core/primitives";

console.log("✅ SDK installed successfully!");
console.log("buildPeginPsbt type:", typeof buildPeginPsbt);

Run with: npx tsx verify-install.ts

Troubleshooting? See Troubleshooting Guide for Buffer polyfills, WASM setup, and bundler configuration.

Package Structure

The SDK uses subpath exports for tree-shaking:

// High-level managers (recommended for most users)
import { PeginManager, PayoutManager } from "@babylonlabs-io/ts-sdk/tbv/core";

// Low-level primitives (advanced use cases)
import {
  buildPeginPsbt,
  buildPayoutPsbt,
  buildDepositorPayoutPsbt,
  buildNoPayoutPsbt,
  buildChallengeAssertPsbt,
} from "@babylonlabs-io/ts-sdk/tbv/core/primitives";

// Utilities
import { selectUtxosForPegin } from "@babylonlabs-io/ts-sdk/tbv/core";

// Shared types and wallet interfaces
import { BitcoinWallet, UTXO } from "@babylonlabs-io/ts-sdk/shared";

// Contract ABIs
import { BTCVaultRegistryABI } from "@babylonlabs-io/ts-sdk/tbv/core";

// Protocol integrations (Aave)
import {
  buildAddCollateralTx,
  buildBorrowTx,
  getUserAccountData,
  calculateHealthFactor,
} from "@babylonlabs-io/ts-sdk/tbv/integrations/aave";

Choose Your API Level

The SDK provides two integration approaches:

Managers (High-Level)

  • What: Pre-built wallet orchestration for complete vault workflows
  • Best for: Web apps, browser wallets (MetaMask, Unisat)
  • You provide: Wallet interface
  • SDK handles: Transaction building, signing coordination, contract calls

Primitives (Low-Level, Advanced)

  • What: Pure functions for building Bitcoin PSBTs
  • Best for: Backend services, custom signing (KMS/HSM), full control
  • You provide: Everything (signing logic, contract calls, broadcasting)
  • SDK handles: Only PSBT construction and utility functions

Trustless Bitcoin Vaults (TBV) Documentation

🚀 Quickstart

Step-by-step tutorials:

🔌 Application Integrations

Use BTC vaults in DeFi protocols and applications:

🔍 API Reference

Auto-generated from TSDoc comments using TypeDoc:

🛠️ Troubleshooting

Links