A place for talking about the Ethereum Virtual Machine on Farcaster.

Functionality I deeply want: the ability for smart contracts to take action based on certain onchain events

For example: if wallet A sends ETH to wallet B, smart contract does X

Is this possible today / is anyone working on this?

The closest to this I'm aware of is offchain hooks that trigger other onchain actions, like:

Building /bright-moments - minting onchain art IRL | /purple #15 | FID 129 #magikarp

Rome, Metropolitan City of Rome Capital, Italy

The closest to this I'm aware of is offchain hooks that trigger other onchain actions, like:

https://docs.tenderly.co/web3-actions/intro-to-web3-actions

It would be better for composability to be fully onchain

If the contract you’re watching supports hooks, you can insert a callback, but this adds gas overhead for the caller.

Composability is nice, but forcing other people to trigger your code isn’t. You can already use MEV/incentives to get your callbacks called if they’re valuable enough.

Could you elaborate on why? On The surface this sounds like a gas nightmare