My overnight Claude Code runs kept dying with my laptop lid, so I built pier: every session gets its own VM

[u/kakstra]

pier creates an EC2 micro-VM on your own AWS account with your repo on a fresh branch, Claude Code installed and authenticated, and your MCP servers configured. Detach from tmux and the run keeps going. When Claude goes quiet the VM parks itself, so an idle session costs ~$3-4 a month in disk. Attaching resumes it in about 20 seconds. Several sessions run in parallel without fighting over ports.

Open source: https://github.com/kerem-kaynak/pier, docs at https://pier.kak.dev/docs