# Compile Swap ABIs

We use Boltz to swap into and out of escrow contracts on Rootstock's EVM L2.

To facilitate this, we require the ABIs that Boltz makes available for their swaps, and the ABIs used for the escrow contract.

If we import the ABIs, we can use web3dart package and it's accompanying class builder to easily interact with any EVM compatible L2. We only need to run this if there is a change in the ABIs, since the compiled dart is committed in the /app folder.

git@github.com:BoltzExchange/boltz-core.git
(
    cd boltz-core && npm install && curl -L https://foundry.paradigm.xyz | bash && foundryup && npm run compile:solidity
)
cp ./boltz-core/out/**/* ./app/lib/data/sources/boltz/contracts
(
    cd ./app/lib/data/sources/boltz/contracts
for file in *.json; do 
    mv -- "$file" "${file%.json}.abi.json"
done
)