👋Introduction

Sats Connect is a simple javascript library that connects apps to Bitcoin, Spark, Starknet, Stacks, and other Bitcoin Layer 2 wallets like Xverse.

It’s already powering apps across the BitcoinFi ecosystem, with close to 2 million downloads — making it one of the most widely used ways for developers to integrate Bitcoin wallets today.

✨ What you can do with Sats Connect

Developers building on Bitcoin and its L2s can use Sats Connect to interact directly with users’ wallets:

• 🔑 Retrieve wallet addresses for Bitcoin, Spark, Starknet, Stacks, and more

• ✍️ Request signatures of messages for authentication or verification

• 🔗 Sign & send transactions:

  • Bitcoin PSBTs

  • Spark BTC & token transfers

  • Starknet & Stacks transfers & contract calls

• 🖼️🔲🪙 Ordinals, Runes & BRC-20:

  • Track balances across assets

  • Transfer tokens and inscriptions

  • Inscribe sats with arbitrary content, create and mint tokens

🛠️ Why Sats Connect?

• Wallet-first – every interaction happens directly in the user’s wallet, with explicit approval

• Bitcoin-native & multi-asset – supports Bitcoin L1 (BTC, Ordinals, Runes, BRC-20) as well as emerging L2s like Spark, Starknet, and Stacks

• Comprehensive toolkit – from simple address retrieval to advanced features like signing PSBTs, transferring Spark tokens, or inscribing Ordinals

• Battle-tested – trusted by leading BitcoinFi apps, with close to 2M downloads and a growing developer ecosystem

🚀 Get started

To get started, import sats-connect into your project.

npm install [email protected]

Then request a wallet connection — and explore the docs to unlock the full Bitcoin stack: Bitcoin L1, Spark, Starknet, Stacks, and the assets built on top.

⚡ Power your Bitcoin apps with plug-and-play infra

Sats Connect lets your app connect directly to users’ wallets. The Xverse API gives you plug-and-play access to Bitcoin data and infrastructure — Ordinals, Runes, mempool, balances, transactions, collections, and more — without running your own nodes or indexers.

Together, they remove the heavy lifting so you can focus on building the next generation of Bitcoin apps.

🤝 Join the community

If you’re building with Sats Connect or Xverse API and need help with integration, join our developer forum to connect with the community and the Xverse team.