We’re releasing Starkzap v2, the next evolution of the TypeScript SDK that brings Bitcoin, stablecoins, and DeFi to any application in minutes.

Starkzap v1 made it possible to integrate wallets, gasless transactions, and staking without rebuilding your stack. With v2, we’re expanding into a complete money toolkit for your app in minutes: plug-in swaps, DCA, lending and borrowing, bridging, and confidential payments, all inside the same SDK.

Background

Ideas should be the only limit when building apps in 2026. Being blocked by integrations shouldn’t happen.

Teams want to add swaps, yield, and cross-chain flows. Still, each feature introduces new complexities: learning a new smart-contract language, managing wallet infrastructure, handling gas fees, and stitching together 8+ libraries.

Over time, the stack fragments and the roadmap slow down. Features get delayed, then quietly dropped. And before you know it, you’re spending more time on rewiring than actually shipping. 

With Starkzap, you get one SDK, one wallet, and one transaction surface that unify the entire DeFi stack. Build once, and unlock an infinity of use cases in minutes. There is no solution today that covers wallets, bridging, swaps, DCA, lending, and privacy in one place. Until now.

Modules

Starkzap v2 expands the SDK with new production-ready modules. Each one plugs into the same wallet and transaction builder. 

Here are the new 5 modules:

Swaps

Let users trade assets directly in your app using avnu or Ekubo, and Starkzap handles routing and execution behind the scenes. From the user’s perspective, it’s just a simple in-app swap.

DCA (Dollar-Cost Averaging)

Add recurring investment flows without building custom logic. Users can choose to invest daily or weekly, and Starkzap takes care of scheduling and execution, plugging directly into avnu or Ekubo’s DCA product. It’s a straightforward way to bring “set and forget” investing into your product.

Lending & Borrowing

Integrate lending markets through Vesu with a single API. Users can deposit assets to earn yield or borrow against their positions, all without leaving your app or navigating external dashboards. Users can earn yield on a variety of different assets and directly borrow in-app.

Bridging

Let users bring assets from Ethereum or Solana into Starknet in one flow. Starkzap abstracts away token selection, routing, and fees, so onboarding feels like a native part of your app instead of a separate process.

Confidential Transfers

Plug-in confidential payments where balances and amounts stay hidden via Tongo. Proofs are generated client-side and submitted through the same transaction flow, so you can offer privacy without breaking UX.

All modules are available today and designed to work together out of the box for anyone building a crypto-native app or a TradFi Fintech mobile app to expand their product line.

The Foundation

Starkzap v2 builds on the foundation introduced in v1:

  • Wallets: Social login via Privy and Cartridge Controller
  • Paymaster: Gasless UX via AVNU or Cartridge
  • Staking: Native BTC and STRK staking
  • Tx Builder: Composable, batchable transactions

V2 extends this foundation without changing your integration model. It’s as simple as upgrading the SDK and plugging-in new functionalities.

Help Your Team

  • Reduce engineering overhead with a single unified SDK
  • Ship faster by avoiding fragmented integrations
  • Unlock new revenue streams through DeFi primitives
  • Deliver a seamless UX with full wallet abstraction

What This Enables

With a single integration, you can now build:

  • One-tap yield experiences (lending + swaps)
  • Recurring investment flows (DCA + gasless UX)
  • Cross-chain onboarding (bridging + auto-access to DeFi)
  • Private payment systems (confidential transfers)
  • Full consumer apps with self-custody and social login

Fund Your Project

Apps building with Starkzap continue to be eligible for ecosystem support from the Starknet Foundation:

Together, these programs provide up to $2M in funding for qualified projects.

What’s Next

Starkzap v2 is available now. Teams can install the SDK, upgrade from v1, and start shipping new DeFi experiences without rebuilding their stack.

We’re continuing to add new protocol integrations, but v2 already delivers the full rails: swaps, DCA, lending, bridging, privacy, and gasless UX, all unified in one SDK.

Start now, start simple:

Documentation

Dive into the docs and start building in minutes. 

Building with Starkzap? ⭐ the repo and join us in bringing Bitcoin and DeFi to every app.