9router/gitbook/content/en/integration/codex.md
2026-05-11 11:50:24 +07:00

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# OpenAI Codex CLI Integration
Integrate 9Router with OpenAI Codex CLI to route your OpenAI API requests through 9Router's intelligent routing system.
## Prerequisites
- OpenAI Codex CLI installed
- 9Router running locally or cloud endpoint configured
- API key from 9Router dashboard
## Setup
### 1. Configure Environment Variables
Set the following environment variables in your shell configuration file (`~/.bashrc`, `~/.zshrc`, or `~/.bash_profile`):
```bash
# Base URL for 9Router
export OPENAI_BASE_URL="http://localhost:20128/v1"
# API Key from 9Router dashboard
export OPENAI_API_KEY="your-9router-api-key"
```
### 2. Reload Shell Configuration
```bash
source ~/.zshrc # or ~/.bashrc
```
### 3. Verify Configuration
Check that the environment variables are set correctly:
```bash
echo $OPENAI_BASE_URL
echo $OPENAI_API_KEY
```
## Available Models
9Router provides the following Codex models:
| Model ID | Description |
|----------|-------------|
| `cx/gpt-5.2-codex` | GPT-5.2 Codex - Latest version |
| `cx/gpt-5.1-codex-max` | GPT-5.1 Codex Max - Extended context |
## Usage Examples
### Basic Usage
```bash
# Use GPT-5.2 Codex
codex --model cx/gpt-5.2-codex "Write a function to sort an array"
# Use GPT-5.1 Codex Max
codex --model cx/gpt-5.1-codex-max "Explain this complex algorithm"
```
### Code Generation
```bash
codex --model cx/gpt-5.2-codex "Create a REST API endpoint for user authentication"
```
### Code Explanation
```bash
codex --model cx/gpt-5.1-codex-max "Explain what this code does: $(cat myfile.js)"
```
## Configuration File
You can also configure Codex CLI using a configuration file. Create or edit `~/.codex/config.json`:
```json
{
"baseUrl": "http://localhost:20128/v1",
"apiKey": "your-9router-api-key",
"defaultModel": "cx/gpt-5.2-codex"
}
```
## Troubleshooting
### Authentication Errors
If you encounter authentication errors:
1. Verify your API key is correct in 9Router dashboard
2. Check that `OPENAI_API_KEY` environment variable is set
3. Ensure the API key has not expired
### Connection Issues
If you encounter connection errors:
1. Verify 9Router is running: `curl http://localhost:20128/health`
2. Check environment variables are set correctly
3. Ensure no firewall is blocking port 20128
### Model Not Available
If you get "model not available" errors:
1. Verify the model name matches your 9Router configuration
2. Check that the OpenAI provider connection is active in 9Router dashboard
3. Ensure the model is available in your connected providers
## Cloud Endpoint
To use 9Router cloud endpoint instead of localhost:
```bash
export OPENAI_BASE_URL="https://9router.com"
```
Make sure you have configured your API key in the 9Router cloud dashboard.
## Advanced Configuration
### Custom Timeout
```bash
export OPENAI_TIMEOUT=60 # seconds
```
### Debug Mode
Enable debug mode to see detailed request/response logs:
```bash
export CODEX_DEBUG=true
codex --model cx/gpt-5.2-codex "Your prompt"
```