Not recommended for production use. This project is still in development and may not be stable or fully functional.

Ferrule MPC is a golang library/tool to run a Farcaster Wallet App or Connected App as an MPC clustered signer. The cluster is leader less and uses a threshold signature scheme to sign transactions with a threshold of t out of n signers. It uses the binance tss library for the threshold signature scheme and the memberlist library for the cluster membership which uses the SWIM protocol.

• Make it eaiser to deploy decentralized Farcaster apps
• Be the foundational signer technology for Ferrule (the Farcaster Hub AVS)
• Leaderless consensus

Currently you can run this by using docker compose. For a local testnet all you need is to run the following command:

docker-compose up

This will start a 3 node cluster with a threshold of 2 out of 3 signers. You can see all environment vars in the docker-compose.yml file.

Currently the cluster uses a basic consensus system that assumes all signers are honest. This is not secure in a production environment. We are working on a more secure consensus system that will be implemented in the future.