Codex Run

Browse and interact with your Codex CLI conversations in a beautiful web UI

Run the project simply by executing

npx codex-run

The browser will open automatically at http://localhost:12001.

Features

• Live conversation viewer - Stream Codex session updates in real time
• Session search and project filter - Quickly find the conversation you need
• New session creation - Start Codex threads directly from the UI with a project path
• In-browser messaging - Send follow-up prompts to an existing Codex thread
• Plan mode workflow - Toggle Plan mode and apply a proposed plan with one click

Usage

Install globally via npm:

npm install -g codex-run

Then run it from any directory:

codex-run

The browser will open automatically at http://localhost:12001, showing all your Codex CLI conversations.

codex-run [options]

Options:
  -V, --version        Show version number
  -p, --port <number>  Port to listen on (default: 12001)
  -d, --dir <path>     Codex directory path (default: ~/.codex)
  --dev                Enable CORS for development (frontend at localhost:12000)
  --no-open            Do not open browser automatically
  -h, --help           Show help

Codex Interaction (v0.3.0)

codex-run now supports interactive Codex workflows in addition to history browsing:

• Create a new thread by setting a project path and clicking New Session
• Send prompts from the bottom composer
• Toggle Plan mode for plan-first turns
• Pick model and reasoning effort before sending
• Stop current generation with Stop
• Respond to request_user_input option prompts in conversation view

Interactive mode uses codex under the hood. If your codex binary is not on PATH, set:

export CODEX_CLI_PATH="/absolute/path/to/codex"

How It Works

Codex CLI stores conversation history in ~/.codex/. This tool reads that data and presents it in a web interface with:

• Session list - All your conversations, sorted by recency
• Project filter - Focus on a specific project
• Conversation view - Full message history with tool calls
• Session header - Shows conversation title, project name, and timestamp
• Resume command - Copies the command to resume the conversation
• Real-time updates - SSE streaming for live conversations
• Interactive Codex bridge - Creates/sends/interrupts turns via codex app-server

Requirements

• Node.js 20+
• Codex CLI installed and used at least once

Development

# Clone the repo
git clone https://github.com/asfsdsf/codex-run.git
cd codex-run

# Install dependencies
pnpm install

# Start development servers
pnpm dev

# Build for production
pnpm build

Acknowledgments

This project was originally based on claude-run by Kamran Ahmed. Special thanks to the author for the great design and inspiration.

License

MIT © Kamran Ahmed