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Arc recently released App Kit. I tested it and built something with it. In this post I'll explain what App Kit is, why it matters, and what I built.

App Kit is a set of SDKs that lets you add core onchain features to your app without writing everything from scratch. Instead of spending weeks connecting different APIs and managing separate integrations for each chain, App Kit gives you all of that in one place.

Transfer stablecoins between wallets on the same chain.

 Move USDC across different blockchains using Circle's CCTP protocol.

 Exchange tokens on the same chain without managing routing or liquidity providers.

Each feature takes under 10 lines of code. It works with Viem, Ethers, MetaMask and Circle Wallets. There's also a built-in revenue sharing feature: every time a user makes a transaction through your app, you can automatically collect a small fee without writing any extra code or deploying a separate contract.

For anyone building payment or stablecoin focused apps on Arc, this cuts down integration time significantly.

To see how it works in practice, I built Zeno. It's a simple web app that lets users send, bridge, and swap USDC on Arc Testnet. Built with Claude and powered by Arc App Kit.

If you have any questions or want to share what you're building with App Kit, feel free to leave a comment.

Arc App Kit Is Out: Here's What It Does and What I Built With It

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