You can install actions from a Frame and start using them immediately.

Warpcast

Cast actions are live! Try them out by installing Upthumbs.

https://upthumbs.app/api

Technowatermelon. Elder Millenial. Building Farcaster. 

nf.td/varun

Try it in the frame below: https://warpcast.com/horsefacts.eth/0x5021e608

How does storage work for actions you install? Is it within the client itself?

Don't want to say, upthumbs is not that good, try out some other name. even thumbsup look better. just a suggestion!!!