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I want to be able to make dynamic multi pools swaps in my smart contract. My plan is to use the exactInput function found here: https://github.com/Uniswap/v3-periphery/blob/main/contracts/interfaces/ISwapRouter.sol#L26

However I can't figure out how I can create the path variable. I would think uniswap has a utility somewhere to interact with the Auto Router but I can't seem to find it

I'm pretty sure the Auto Router is exposed here, but I can't figure out where its deployed: https://github.com/Uniswap/routing-api

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  • The auto routing part is done offchain. So you can use the API to get the path and pass it to your contract
    – 0xSanson
    Commented Jun 27 at 10:05
  • Thats what im trying to figure out. Which API? I cant seem to find any documentation about how to get the swap path
    – morraez
    Commented Jun 27 at 21:47
  • Maybe here docs.uniswap.org/sdk/v3/guides/swaps/routing
    – 0xSanson
    Commented Jun 28 at 9:27
  • Thanks this led me to the correct answer!
    – morraez
    Commented Jul 5 at 11:56

1 Answer 1

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I figured it out. You can get the path if you copy the following code example

https://github.com/Uniswap/examples/blob/main/v3-sdk/routing/src/libs/routing.ts#L40

The example is broken if you use the latest versions of the uniswap sdks libraries. So make sure you are using the same version as the example

    "@uniswap/sdk-core": "^3.1.0",
    "@uniswap/smart-order-router": "^3.0.6",
    "@uniswap/v3-sdk": "^3.9.0",
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