Monad

Are those specific to Monad ? Do you have MPC Wallet API?

Building Snack Money.

Miniapp Link: https://warpcast.com/miniapps/e7_h6G11m0Sr/snack-money

I use CDP Wallet API. https://docs.cdp.coinbase.com/wallet-api/docs/welcome

Btw, I implemented one of your ideas but in opposite direction. Currently, You can send tips to others by like/recast or emoji in quotes/replies of their casts but not the other way around. I think I can implement that one pretty easily.

Some ideas are Monad specific

By MPC do you mean something like Privy, Turnkey etc…?