Codex CLI

OpenAI's official AI coding assistant CLI tool.

Quick Start

3 steps to use Codex CLI via the Code80 platform:

1. Install CLI Tool

npm install -g @openai/codex

2. Configure API

Create the config directory:

mkdir -p ~/.codex

Edit ~/.codex/config.toml:

model_provider = "code80"
model = "gpt-5.3-codex"
model_reasoning_effort = "high"
network_access = "enabled"
disable_response_storage = true
model_verbosity = "high"

[model_providers.code80]
name = "code80"
base_url = "https://your-code80-domain.com/v1"
wire_api = "responses"
requires_openai_auth = true

Edit ~/.codex/auth.json:

{
  "OPENAI_API_KEY": "your-api-key"
}

Replace your-api-key with your API Key from the Code80 platform.

3. Start Using

cd your-project
codex

First launch: Select dev environment → Configure preferences → Start AI-assisted coding.

Use Cases

• AI-assisted code generation
• Natural language to code
• Code completion and optimization
• Automated script writing

Next Steps

• Installation - Detailed installation steps per platform
• Configuration - Complete config file reference
• Tips & Tricks - Advanced usage
• FAQ - Troubleshooting guide