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The UniversalRouter is an ETH, ERC20, and NFT swap router, that can aggregate trades across protocols to give users access to highly-flexible and personalised transactions. The contract is unowned, and is not upgradeable.

Structured reference

Overview

The UniversalRouter is an ETH, ERC20, and NFT swap router, that can aggregate trades across protocols to give users access to highly-flexible and personalised transactions. The contract is unowned, and is not upgradeable.

The flexible command style allows us to provide users with:

  • Splitting and interleaving of Ring trades
  • Purchases of NFTs across 8 marketplaces
  • Partial fills of trades
  • Wrapping and Unwrapping of ETH
  • Time-bound, signature controlled token approvals using Permit2

Transactions are encoded using a string of commands, allowing users to have maximum flexibility over what they want to perform. With all of these features available in a single transaction, the possibilities available to users are endless.

Note: The UniversalRouter uses Permit2 to remove the need for token approvals being provided directly to the UniversalRouter. The Permit2 documentation can be found here.

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