Open Codex

Open Codex CLI

Lightweight coding agent that runs in your terminal

brew tap codingmoh/open-codex && brew install open-codex

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Open Codex is a fully open-source command-line AI assistant inspired by OpenAI Codex, supporting local language models like phi-4-mini and full integration with Ollama.

🧠 Runs 100% locally – no OpenAI API key required. Everything works offline.

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Supports

• One-shot mode: open-codex "list all folders" -> returns shell command
• Ollama integration for (e.g., LLaMA3, Mistral)
• Native execution on macOS, Linux, and Windows

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✨ Features

• Natural Language → Shell Command (via local or Ollama-hosted LLMs)
• Local-only execution: no data sent to the cloud
• Confirmation before running any command
• Option to copy to clipboard / abort / execute
• Colored terminal output for better readability
• Ollama support: use advanced LLMs with --ollama --model llama3

🔍 Example with Ollama:

open-codex --ollama --model llama3 "find all JPEGs larger than 10MB"

Codex will:

1. Send your prompt to the Ollama API (local server, e.g. on localhost:11434)
2. Return a shell command suggestion (e.g., find . -name "*.jpg" -size +10M)
3. Prompt you to execute, copy, or abort

🛠️ You must have Ollama installed and running locally to use this feature.

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🧱 Future Plans

• Interactive, context-aware mode
• Fancy TUI with textual or rich
• Full interactive chat mode
• Function-calling support
• Whisper-based voice input
• Command history & undo
• Plugin system for workflows

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📦 Installation

🔹 Option 1: Install via Homebrew (Recommended for MacOS)

brew tap codingmoh/open-codex
brew install open-codex

🔹 Option 2: Install via pipx (Cross-platform)

pipx install open-codex

🔹 Option 3: Clone & install locally

git clone https://github.com/codingmoh/open-codex.git
cd open_codex
pip install .

Once installed, use the open-codex CLI globally.

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🚀 Usage Examples

▶️ One-shot mode

open-codex "untar file abc.tar"

✅ Codex suggests a shell command
✅ Asks for confirmation / add to clipboard / abort
✅ Executes if approved

▶️ Using Ollama

open-codex --ollama --model llama3 "delete all .DS_Store files recursively"

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🛡️ Security Notice

All models run locally. Commands are executed only after your explicit confirmation.

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🧑‍💻 Contributing

PRs welcome! Ideas, issues, improvements — all appreciated.

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📝 License

MIT

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❤️ Built with love and caffeine by codingmoh.