coding-agent-machine-setup

Turn a fresh Linux box (VM, LXC container, server) into a comfortable Codex and/or Claude Code working environment in one go:

• 🔑 SSH key login via 1Password — key lives in the 1Password SSH agent, unlocked by Touch ID / your vault, never on disk.
• 🪟 tmux + an interactive login session picker — every SSH login lands on a menu: attach an existing session, jump straight into a project, start a new named session, or drop to a plain shell.
• 🖱 tmux copy / scrollback / history tuning — mouse selection + wheel scrollback, 50k-line history.
• 📊 Agent-native status information — Codex gets a native footer with directory, Git branch, model/reasoning, and context remaining; Claude Code keeps the custom two-line statusline with rate-limit meters.
• 🧭 Native instruction files — AGENTS.md for Codex and CLAUDE.md for Claude Code carry equivalent repository guidance.

It's all small, readable shell — no frameworks, no daemons.

~/esphome  esphome-configs  main │ Opus 4.8  effort: high  ctx: [████░░░░░░] 42% │ lmt: 5h : 6% ↻2h40m · 7d : 1% ↻1d9h
hint: /model · /effort · /exit · ! <cmd> = run terminal command · Ctrl+b → d:leave tmux session · Ctrl+b → s:switch tmux session

Existing sessions:
  1) claude     (~)
  2) esphome    (~/esphome)

Projects:
  h) home-assistant
  a) agent
  e) esphome      [running]
  r) root

[n] new named  [s] shell  [q] quit
  (inside tmux: Ctrl+b → d = leave tmux session | Ctrl+b → s = switch tmux session)
Choice:

Quick start

git clone https://github.com/helicopterrun/claude-code-bootstrap.git
cd claude-code-bootstrap
./setup.sh

Choose a specific agent when desired:

./setup.sh --codex
./setup.sh --claude
./setup.sh --both

With no flag, the installer detects installed agents; if neither is present it defaults to Codex setup.

The installer is interactive and conservative: it shows what it changes, skips anything already done, asks before installing packages, and never disables SSH password auth for you (do that yourself once key login is confirmed). It will:

1. Install prerequisites (tmux, jq, git) with your package manager.
2. Optionally add a public key to ~/.ssh/authorized_keys (and print the laptop-side 1Password steps).
3. Write ~/.tmux-login.sh with the projects you enter, and wire the guarded hook into ~/.profile.
4. Install ~/.tmux.conf (or merge in the mouse + history settings).
5. Configure Codex's native footer in ~/.codex/config.toml, install Claude's custom statusline, or both, according to the selected mode.

Test from a second SSH session. Because this touches the login path, open a new terminal and confirm everything works while keeping your current session open as a safety net.

Prefer to let an agent do it?

prompts/machine-setup.md is the same setup written as a prompt you paste into Claude Code running on the new machine. It walks through each part interactively, asks before risky actions, and is handy when a machine's quirks need judgment the installer doesn't have.

For Codex, use prompts/codex-machine-setup.md. Codex also reads this repository's AGENTS.md automatically.

What goes where

File	Installed to	What it is
scripts/tmux-login.sh	~/.tmux-login.sh	The login session picker (POSIX sh, sourced from your profile).
scripts/profile-snippet.sh	appended to ~/.profile	Guarded hook that sources the picker on interactive SSH logins.
scripts/tmux.conf	~/.tmux.conf	Mouse, 50k scrollback, copy-mode notes.
scripts/statusline.sh	~/.claude/statusline.sh	The Claude Code statusline (bash).
native Codex configuration	~/.codex/config.toml	Codex footer; no wrapper script required.
setup.sh	—	Interactive installer that wires it all up.
prompts/machine-setup.md	—	The "let Claude set it up" prompt.
prompts/codex-machine-setup.md	—	The equivalent Codex setup prompt.

Customizing

• Add a tmux project: edit the projects="…" block in ~/.tmux-login.sh — one key name directory line per project. name is the tmux session name (no . or :); directory is where it starts.
• Statusline colors / thresholds: the ANSI block and pct_color() near the top of ~/.claude/statusline.sh. It auto-folds (drops the context bar + hint line) under 80 columns.
• Codex footer: edit tui.status_line in ~/.codex/config.toml. Run /status for full session configuration and /model to change model or reasoning effort.
• tmux clipboard / vi keys: uncomment the optional lines at the bottom of ~/.tmux.conf, then tmux source-file ~/.tmux.conf.

Notes & caveats

• Rate-limit meters appear only for Claude.ai Pro/Max accounts, and only after the first API response in a session — otherwise they're simply absent.
• Italic hint line depends on terminal support (most modern terminals are fine).
• Profile sourcing: some distros source ~/.bash_profile (not ~/.profile) on login; the installer detects this, but if your picker doesn't appear, make sure the file your shell sources pulls in the snippet.
• Unknown $TERM: the login hook skips the picker (rather than stranding you) if your $TERM isn't in the server's terminfo db, and prints how to install it.

License

MIT — see LICENSE.