Arc House
Tooling + Technical
April 10, 2026

Ship Stablecoin Apps Faster with App Kits

Ship Stablecoin Apps Faster with App Kits
# Announcements
# App Kits
# Bridge Kit

Build payment and liquidity workflows across blockchains with a single SDK for bridging, swapping, and token transfers.

Tim Baker
Tim Baker
Ship Stablecoin Apps Faster with App Kits

App Kits is now available

Shipping multichain payment and liquidity flows usually means stitching together separate integrations for bridging, swapping, and transfers.
App Kits simplifies this with a single SDK that standardizes how these flows are implemented across chains and wallets.
With App Kits, you can:
  • Bridge USDC across chains
  • Swap tokens on supported networks
  • Transfer tokens between wallets
  • Configure fees for eligible flows

Get Started

Install App Kits

npm install @circle-fin/app-kit
Then install the adapter that matches your environment (e.g. viem, ethers, solana, or Circle Wallets).


Three Core Methods

Each core flow can be executed with a single method call:

Bridge

Move USDC across supported blockchains using CCTP.
await kit.bridge({
  from: { adapter, chain: "Ethereum_Sepolia" },
  to: { adapter, chain: "Arc_Testnet" },
  amount: "1.00",
  token: "USDC",
});

Swap

Execute token swaps on the same chain without managing third-party integrations or liquidity integrations. Note: Swap requires a kit key from Circle Console
await kit.swap({
  from: { adapter, chain: "Ethereum" },
  tokenIn: "USDT",
  tokenOut: "USDC",
  amount: "1.00",
});

Send

Transfer tokens between wallets on the same chain.
await kit.send({
  from: { adapter, chain: "Arc_Testnet" },
  to: "RECIPIENT_ADDRESS",
  amount: "1.00",
  token: "USDC",
});

Built-in monetization

App Kits also includes built-in monetization, allowing you to configure fees directly within supported transaction flows without deploying custom contracts.

Start Building

App Kits is designed to integrate with your existing stack and wallet setup, while simplifying how you implement bridging, swapping, and transfers across chains.
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