Install in Antigravity
The one-line install covers Antigravity, the app and the command line.
Command-line plugin (the other way): agy plugin install https://github.com/kish21/sessioncost, then start a new
chat. It brings /sessioncost and /livesession, and needs Git. No Python? The first /sessioncost or /livesession
fetches one.
The guard: type /livesession. The first time, it puts the guard into Antigravity and asks you to restart it
once. You can see the guard’s hooks under Customizations → Hooks.
New versions: /sessioncost update in a chat, or install again the same way.