Is there any tool that maps a Twitter account to Farcaster?

This is live now in Firefly. When you connect X, the app can show you Farcaster and Lens activity from the people you follow on X.

This is powered by our sister project, Next.id, which provided developer tools connecting Web2 and Web3 identities via cryptographic proofs. 

Other places you can see this in action
1 - NextId's consumer app, web3.bio/
2 -  @masknetwork 's chrome extension

The Portal to the New, Open Internet. #Web3 realMaskNetwork.eth

@tribedotrun | @aburra $FARTS https://x.com/thebillzh