The best way to use Codex CLI
Codex CLI is powerful in the terminal — but scattered tabs, lost sessions, and no easy way to test what Codex writes limits what you can do with it. 1DevTool gives Codex CLI a proper desktop home: named persistent sessions, parallel-agent layouts, file tree, HTTP client, database client, and an embedded browser.
$29 one-time after beta. macOS, Windows, Linux.
Sound familiar?
CLI tools deserve better UX than iTerm tabs
Codex CLI is amazing, but running it in basic terminal tabs means no session naming, no color-coding, no layout presets — and no one-click spawn.
Session management is all manual
You're responsible for keeping track of which Codex session is for which task. No dashboard, no state indicators, no persistence.
No integration with other tools
Codex CLI lives alone. There's no easy way to pair it with your file browser, HTTP client, database, or browser — so you keep alt-tabbing.
Codex writes, you manually verify
Codex just wrote an API route, a migration, and a test. Now you juggle Postman, DBeaver, and Chrome to verify all three — losing conversation context each time.
Crash recovery is brutal
A terminal crash or laptop reboot means every Codex session is gone. Re-auth, re-prompt, re-navigate.
A proper home for Codex CLI
- Named Codex CLI sessions with color-coding — 'API Codex', 'Frontend Codex', 'Migration Codex'
- Persistent tmux-backed sessions survive restarts and crashes on macOS/Linux
- Built-in file tree — click to open files in 1DevTool's Monaco editor or hand off to Cursor/VS Code
- Side-by-side with HTTP client, 13-engine database client, and embedded Chromium browser
- Run Codex CLI in a grid alongside Claude Code, Gemini CLI, Amp, and Aider
- Native builds for macOS, Windows, and Linux — same Codex experience everywhere
Everything you need for codex cli
Named Codex Sessions
Name your Codex CLI sessions. 'API Codex', 'Frontend Codex' — stay organized across projects and tasks.
Persistent State
Tmux-backed sessions on macOS and Linux. Crash, reboot, or close the laptop — Codex picks up exactly where it left off.
File Tree Integration
See your project files. Click to open in 1DevTool's Monaco editor or hand off to Cursor / VS Code with one click.
Embedded Browser + HTTP Client
Preview your app without leaving the workspace. Test the endpoints Codex just wrote. Replay HTTP requests with Send-to-AI back into Codex.
Multi-Agent Ready
Run Codex CLI alongside Claude Code, Gemini CLI, Amp, Aider, or any shell. Parallel execution in a 2×2 grid.
All-in-One Workspace
Editor, terminals, HTTP, DB, browser, Docker, Git — one window. No more alt-tabbing between five apps to ship one feature.
Frequently asked questions
What is Codex CLI?
Codex CLI is OpenAI's command-line AI coding agent — an autonomous coding assistant that plans, edits files, runs commands, and iterates. 1DevTool is a desktop workspace purpose-built to run and organize it.
How do I install Codex CLI?
Install Codex CLI from OpenAI separately (npm or their official installer). Then use 1DevTool as the workspace that runs and organizes your Codex sessions.
Can I use Codex CLI alongside other AI agents?
Yes. 1DevTool lets you run Codex CLI alongside Claude Code, Gemini CLI, Amp, Aider, and any CLI-based agent — in the same window, in a 2×2 grid if you want.
Does Codex CLI work with 1DevTool's file tree and editor?
Yes. 1DevTool's file tree shows your project files; you can open them in the built-in Monaco editor or hand off to Cursor / VS Code with one click. Codex's file edits appear live in the tree.
Do my Codex sessions persist across restarts?
Yes, on macOS and Linux — sessions are tmux-backed, so they survive restarts, crashes, and closed laptops. On Windows, sessions restore on app relaunch.
Is 1DevTool free?
There's a free tier and a $29 one-time full license. No subscription. Codex API usage is billed separately by OpenAI.
Does this work on Windows and Linux?
Yes. 1DevTool ships native builds for macOS (Apple Silicon + Intel), Windows 10/11, and Linux (.deb + AppImage).
Give Codex CLI the workspace it deserves
Download 1DevTool free. Organize your Codex workflow.
Download 1DevTool — FreemacOS available now. Windows & Linux coming soon.