Lombard SDK: The most complete Bitcoin SDK.
The Lombard SDK brings Bitcoin assets and automated Bitcoin Earn strategies into your platform, with a single TypeScript integration. Already available to users of Ledger, Binance and Bybit.
Two assets. Every user covered.
LBTC
Your user deposits BTC. The SDK mints LBTC: yield-bearing Bitcoin, fully backed by BTC. A covered-call options strategy managed by Bitwise returns BTC-denominated yield. Hold and earn APY automatically, or deploy directly into DeFi. One deposit. Yield from day one.
BTC.b
Your user deposits BTC. The SDK mints BTC.b: Bitcoin across any supported chain, zero fees, 1:1 backed and verified by Chainlink Proof of Reserve. Hold, trade, provide liquidity, or deploy into any DeFi protocol you surface.
Idle BTC to productive Bitcoin. In two clicks.
Mint LBTC from native BTC directly inside your platform. APY from day one. Fully backed by BTC. Liquid across 10+ chains and 50+ protocols.
Mint BTC.b from native BTC. Zero fees. 1:1 Chainlink-verified backing. Available across Ethereum, Avalanche, MegaETH, Katana, Stable, and Monad.
Access automated Bitcoin-on-Bitcoin yield from diverse strategies managed by leading risk and asset managers, directly within your platform.
Building with Bitcoin today forces a bad choice.
Bitcoin L2s lock you in.
One chain. One ecosystem. Limited reach, limited users. Your Bitcoin features work where the L2 works and nowhere else. When you need another chain, you start over.
Building from scratch takes months.
Custom bridges, custody infrastructure, cross-chain execution, security audits. 6–12 months of engineering before your first user deposits a single sat. Most teams don't have the bandwidth or Bitcoin-specific expertise.
Your users want to use their Bitcoin. Enable them on infrastructure that scales beyond a single chain.
Every user who earns yield is a user who stays.
Give users a reason to stay.
Your users hold BTC. Give them a reason to keep it on your platform. Users earning yield or deploying into DeFi strategies through your interface don't leave to do it somewhere else.
Earn on every interaction.
Every integration gets a Partner ID with full attribution tracking. Fee sharing and partner rewards are built in. You earn on every user interaction routed through your platform.
Productive Bitcoin. Not just custody.
Most platforms offer BTC custody. You offer productive Bitcoin: yield, DeFi deployment, multi-chain access, and white-labeled Bitcoin assets. A capability set your competitors don't have until they integrate the same SDK.
Ship in 2–4 weeks.
Single TypeScript integration. You never touch Bitcoin private keys or signing operations. Lombard operates custody, validators, cross-chain routing, and monitoring. Most platforms ship to production in 2–4 weeks.
TypeScript. Production-ready. Supported end-to-end.
Explore
Install @lombard.finance/sdk from npm. Use partnerId: 'test' and testnet (Sepolia, Holesky, Bitcoin Signet) to test every flow before touching production. The SDK Playground lets you configure flows, simulate operations, and generate working code.
Integrate
Two primary actions: stakeAndDeploy for LBTC, depositAndDeploy for BTC.b. Modular factories for tree-shaking. Typed responses, event subscriptions for real-time progress, structured error handling, and a Data API for deposits, exchange rates, and transaction history.
Launch
Every partner gets a dedicated Slack channel with direct Lombard team access. Same support model as Ledger, Binance, Bybit, and Figment. Most teams ship to production in 2–4 weeks.
Already powering Bitcoin's largest platforms.
Give your agents access to Bitcoin.
LBTC and BTC.b are already where your agents operate: Aave, Morpho, Pendle, Curve, Uniswap. The SDK makes Bitcoin programmable. Compatible with Coinbase AgentKit, Vercel AI SDK, and LangChain. Every action is a typed, LLM-callable tool with Zod-validated input/output schemas.
Let your users manage Bitcoin positions through natural language. 'Stake my BTC and deploy to the highest-yield vault' becomes a two-step agent execution inside your interface. Every action is type-safe, every input schema-validated.
Build agents that optimize BTC-denominated yield, rebalance across vaults, or execute multi-step strategies programmatically. The SDK handles the Bitcoin complexity: minting, deployment, tracking, redemption. Your agent handles the strategy.
Give your users productive Bitcoin. Inside your platform. In two clicks.
LBTC, BTC.b, Bitcoin Earn, and agent-compatible tooling. One TypeScript SDK. Ship to production in 2–4 weeks.
Questions, answered.
Everything you need to know about the Lombard SDK: what it does, how to integrate, and what it unlocks.
The Lombard SDK is a single TypeScript integration that brings LBTC, BTC.b, and Bitcoin Earn to your users. Integrate once and unlock the full stack, already powering Bitcoin for platforms like Ledger, Binance, and Bybit.
Most teams ship to production in 2–4 weeks. The SDK handles minting, deployment, tracking and redemption. You focus on your product.
Every SDK action is a typed, LLM-callable tool with Zod-validated input/output schemas. It’s compatible with Coinbase AgentKit, Vercel AI SDK, and LangChain, making Bitcoin fully programmable for autonomous agents and copilots.
The SDK is live across 10+ production chains and 50+ protocols, including Aave, Morpho, Pendle, Curve, and Uniswap.
Wallets, exchanges, and protocols that want to give their users productive Bitcoin without building the infrastructure themselves. Already serving over 270,000 users.