Execution Venues

How to integrate Tycho in different execution venues.

Cow Protocol

To solve orders on CoW Protocol, you'll need to prepare your solution following specific formatting requirements.

First, initialize the encoder with the tycho_router shortcut:

let encoder = EVMEncoderBuilder::new()
    .chain(Chain::Ethereum)
    .initialize_tycho_router()
    .expect("Failed to create encoder builder")
    .build()
    .expect("Failed to build encoder");

This means that the TychoRouter will assume that the token in was already transferred in.

When solving for CoW Protocol, you need to return a Solution object that contains a list of interactions to be executed in sequence.

The solution structure requires:

1. A token transfer to the TychoRouter as the first interaction

2. The calldata returned from encoder.encode_router_calldata(...) as the next interaction

Make sure to encode the initial token transfer operation yourself, as this isn't handled by the Tycho encoder.

Alternatively, you can create a new StrategyEncoder specific for CoWSwap that encodes the extra token transfer. See here how to contribute to Tycho.

Other competition venues

For other venues, like UniswapX or 1inch Fusion, please contact us.