01
The truth lives on disk
zap ps and zap ls return the real state of the stack, not whatever your last terminal session remembered.
Zapper
Process manager for agents
The process manager for agents.
Declarative, stateful, isolated per worktree. No PIDs, no long-lived terminals, no port clashes. Native processes and Docker containers, one yaml, one CLI.
Read the docs
npm i -g pm2 @mp-lb/zapperBuilt for handoffs
02
No long-lived terminals
Processes keep running after the agent that started them exits. Another operator can inspect or restart later.
03
One stack per worktree
Run the same project on parallel branches without fighting over localhost, volumes, or shared process state.
04
One yaml, one CLI
Native processes and Docker containers sit behind one config surface, so the control plane stays small.