> ## Documentation Index
> Fetch the complete documentation index at: https://docs.arc.io/llms.txt
> Use this file to discover all available pages before exploring further.

# App Kit SDK: Swap

> Swap stablecoins and native tokens on the same blockchain with the App Kit SDK's Swap capability

The [App Kit SDK](/app-kit) includes the Swap capability that lets you swap two
tokens on the same blockchain in a few lines of code. It
[supports](/app-kit/references/supported-blockchains#supported-tokens) many
stablecoins (including USDC, EURC, USDT, USDe, DAI, and PYUSD) and native tokens
on supported blockchains. You need a (free)
[kit key](https://developers.circle.com/w3s/keys#kit-keys) from the
[Circle Console](https://console.circle.com) to use Swap.

<Note>
  Among testnets, only Arc Testnet supports Swap (USDC, EURC, and cirBTC only).
  Use mainnet for Swap on any other blockchains.
</Note>

## Quick look

This example swaps USDC for EURC in a single method call:

```typescript TypeScript theme={null}
// Swap 1.00 USDC for EURC on Arc Testnet
const result = await kit.swap({
  from: { adapter: viemAdapter, chain: "Arc_Testnet" },
  tokenIn: "USDC",
  tokenOut: "EURC",
  amountIn: "1.00",
  config: {
    kitKey: process.env.KIT_KEY as string, // Your kit key from the Circle Console
  },
});
```

For a complete end-to-end flow, follow the quickstart:
[Swap Tokens on a Blockchain](/app-kit/quickstarts/swap-tokens-same-chain).

## Installation

[Install the App Kit SDK](/app-kit/tutorials/installation) to use Swap. If you
only need to swap and don't want to install the full App Kit SDK, install the
standalone Swap Kit for your preferred adapter below.

<Tabs>
  <Tab title="Viem">
    <CodeGroup>
      ```bash npm theme={null}
      npm install @circle-fin/swap-kit @circle-fin/adapter-viem-v2 viem
      ```

      ```bash yarn theme={null}
      yarn add @circle-fin/swap-kit @circle-fin/adapter-viem-v2 viem
      ```
    </CodeGroup>
  </Tab>

  <Tab title="Ethers">
    <CodeGroup>
      ```bash npm theme={null}
      npm install @circle-fin/swap-kit @circle-fin/adapter-ethers-v6 ethers
      ```

      ```bash yarn theme={null}
      yarn add @circle-fin/swap-kit @circle-fin/adapter-ethers-v6 ethers
      ```
    </CodeGroup>
  </Tab>

  <Tab title="Solana">
    <CodeGroup>
      ```bash npm theme={null}
      npm install @circle-fin/swap-kit @circle-fin/adapter-solana-kit @solana/kit @solana/web3.js
      ```

      ```bash yarn theme={null}
      yarn add @circle-fin/swap-kit @circle-fin/adapter-solana-kit @solana/kit @solana/web3.js
      ```
    </CodeGroup>
  </Tab>

  <Tab title="Circle Wallets">
    <CodeGroup>
      ```bash npm theme={null}
      npm install @circle-fin/swap-kit @circle-fin/adapter-circle-wallets
      ```

      ```bash yarn theme={null}
      yarn add @circle-fin/swap-kit @circle-fin/adapter-circle-wallets
      ```
    </CodeGroup>
  </Tab>
</Tabs>