docsCodex CLImacOS

macOS Setup

Special Offer - Use Vibe Coding API at approximately 0.35x of the original price, exclusively for programming tools!

This guide will help you configure Codex CLI to use Fizzly API on macOS.

Requirements

  • macOS 10.15 (Catalina) or later
  • Node.js 18+ installed
  • Fizzly API key (Get your key)

Installation Steps

Step 1: Check Environment

Open Terminal and check installed global packages:

npm list -g --depth=0

If you don’t have Node.js installed, you can install it via Homebrew or nodejs.org:

# Install Node.js via Homebrew (recommended)
brew install node

Step 2: Install Codex CLI

Install Codex globally using npm:

npm i -g @openai/codex@latest
⚠️

If you encounter permission errors, use sudo:

sudo npm i -g @openai/codex@latest

Step 3: First Run (Very Important!)

This step is crucial! Running Codex for the first time will automatically create the configuration folder in your user directory.

codex

You’ll see the welcome screen. Press Ctrl+C to exit. This will create the configuration folder at ~/.codex.

Configure API

Step 1: Get API Key

Log in to Fizzly Console and create a new API key.

⚠️

Important: To enjoy the special discounted pricing for programming tools, make sure to select the vibe coding group when creating your API key. This group’s API is exclusively for use with Claude Code, Codex CLI, Gemini CLI, and similar programming tools.

API Key

Step 2: Open Configuration Directory

In Finder, press Cmd + Shift + G and enter the following path:

~/.codex

Open .codex directory

You’ll see the configuration files in the directory:

.codex directory structure

Or use terminal command:

# Open config directory in Finder
open ~/.codex

Step 3: Edit Configuration Files

In the .codex directory, you need to edit two configuration files:

config.toml

Using terminal to edit:

nano ~/.codex/config.toml

Add the following content:

config.toml
model_provider = "fizzlyapi"
model = "openai/gpt-4o-mini"
model_reasoning_effort = "high"
network_access = "enabled"
disable_response_storage = true
model_verbosity = "high"
 
[model_providers.fizzlyapi]
name = "fizzlyapi"
base_url = "https://api.fizzlyapi.com/v1"
wire_api = "responses"
requires_openai_auth = true

auth.json

Using terminal to edit:

nano ~/.codex/auth.json

Add the following content:

auth.json
{
  "OPENAI_API_KEY": "your-fizzly-api-key"
}
⚠️

Replace your-fizzly-api-key with your actual API key from the Fizzly Console.

Save the file (in nano: Ctrl+O to save, Ctrl+X to exit)

Step 4: Verify Configuration

After saving the files, restart Codex:

codex

If configured successfully, you’ll see Codex running normally:

Codex running successfully

Alternative Configuration Methods

Add to ~/.zshrc file (default shell on macOS Catalina+):

# Open .zshrc
nano ~/.zshrc
 
# Add these lines at the end:
export OPENAI_API_KEY="your-fizzly-api-key"
export OPENAI_BASE_URL="https://api.fizzlyapi.com/v1"

Apply changes:

source ~/.zshrc

If .zshrc config doesn’t take effect, you may need to add to ~/.zprofile:

echo 'source ~/.zshrc' >> ~/.zprofile

Supported Models

Supports 200+ AI models. See Codex CLI Models.

Basic Usage

# Start interactive mode
codex
 
# Start in current project directory
cd your-project
codex
 
# Run single command
codex "Write a Python quicksort function"
 
# Use specific model
codex --model gpt-4o
 
# Show help
codex --help

Troubleshooting

1. “codex” command not found

Cause: Codex CLI is not installed or not in PATH.

Solution:

# Reinstall Codex
npm install -g @openai/codex
 
# Or use sudo
sudo npm install -g @openai/codex
 
# Check installation location
which codex

2. “OPENAI_API_KEY not set” error

Cause: Environment variable or configuration file not properly set.

Solution:

First check the configuration file:

# View configuration file content
cat ~/.codex/auth.json

If the file doesn’t exist or is incorrect, follow the “Configure API” steps above.

3. Connection timeout

Cause: Network issues or firewall blocking.

Solution:

  1. Check your network connection
  2. Verify API URL is correct: https://api.fizzlyapi.com/v1
  3. If using VPN or enterprise network, you may need to configure proxy

4. Authentication failed (401)

Cause: Invalid or expired API key.

Solution:

  1. Verify your API key in Fizzly Console
  2. Ensure the key is not deleted or disabled
  3. Re-copy and paste the key (avoid extra spaces)

5. Insufficient balance (403)

Cause: Account balance depleted.

Solution:

  1. Check balance in Fizzly Console
  2. Top up your account in Billing → Recharge
  3. Retry after balance is updated

6. Security blocked

Cause: macOS Gatekeeper is blocking execution.

Solution:

  1. Open System Preferences → Security & Privacy
  2. Click Open Anyway to allow Codex to run

Need more help? Check the FAQ page.

Next Steps

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