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Using Claude Code / GPT Codex subscriptions models for FactoryAI
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FACTORY_ClaudeCode_ChatGPT.md

Using Factory AI with VibeProxy

A simplified guide for using Factory CLI (Droid) with your personal Claude and ChatGPT subscriptions through VibeProxy.

Warning

⚠️ IMPORTANT DISCLAIMER

By using this method, you acknowledge and accept the following:

  • Terms of Service Risk: This approach may violate the Terms of Service of AI model providers (Anthropic, OpenAI, etc.). You are solely responsible for ensuring compliance with all applicable terms and policies.

  • Account Risk: Model providers may detect this usage pattern and take punitive action, including but not limited to account suspension, permanent ban, or loss of access to paid subscriptions.

  • No Guarantees: Providers may change their APIs, authentication mechanisms, or policies at any time, rendering this method inoperable without notice.

  • Assumption of Risk: By proceeding, you assume all legal, financial, and technical risks. The authors and contributors of this guide and CLIProxyAPI bear no responsibility for any consequences arising from your use of this method.

Use at your own risk. Proceed only if you understand and accept these risks.

What is This?

This guide shows you how to use Factory CLI with your personal Claude Code Pro/Max and ChatGPT Plus/Pro subscriptions instead of paying for separate API access. VibeProxy acts as a bridge that handles authentication and routing automatically.

How it works:

Factory CLI  →  VibeProxy  →  [OAuth Authentication]  →  Claude / ChatGPT APIs

VibeProxy manages OAuth tokens, auto-refreshes them, routes requests, and handles API format conversion — all automatically in the background.

Prerequisites

  • macOS 13.0+ (Ventura or later)
  • Active Claude Code Pro/Max subscription for Anthropic access
  • Active ChatGPT Plus/Pro subscription for OpenAI Codex access
  • Factory CLI installed: curl -fsSL https://app.factory.ai/cli | sh

Step 1: Install VibeProxy

  1. Download VibeProxy.app from the releases page or build from source
  2. Install: Drag VibeProxy.app to your /Applications folder
  3. Launch: Open VibeProxy from Applications
    • If macOS blocks it: Right-click → Open, then click "Open" in the dialog

Step 2: Connect Your Accounts

Once VibeProxy is running:

  1. Click the VibeProxy menu bar icon
  2. Select "Open Settings"
  3. Click "Connect" next to Claude Code
    • Your browser will open for authentication
    • Complete the login process
    • VibeProxy will automatically detect when you're authenticated
  4. Click "Connect" next to Codex
    • Follow the same browser authentication process
    • Wait for VibeProxy to confirm the connection

✅ The server starts automatically and runs on port 8317

Step 3: Configure Factory CLI

Edit your Factory configuration file at ~/.factory/config.json (if the file doesn't exist, create it):

{
  "custom_models": [
    {
      "model": "claude-opus-4-1-20250805",
      "base_url": "http://localhost:8317",
      "api_key": "dummy-not-used",
      "provider": "anthropic"
    },
    {
      "model": "claude-sonnet-4-5-20250929",
      "base_url": "http://localhost:8317",
      "api_key": "dummy-not-used",
      "provider": "anthropic"
    },
    {
      "model": "gpt-5",
      "base_url": "http://localhost:8317/v1",
      "api_key": "dummy-not-used",
      "provider": "openai"
    },
    {
      "model": "gpt-5-minimal",
      "base_url": "http://localhost:8317/v1",
      "api_key": "dummy-not-used",
      "provider": "openai"
    },
    {
      "model": "gpt-5-low",
      "base_url": "http://localhost:8317/v1",
      "api_key": "dummy-not-used",
      "provider": "openai"
    },
    {
      "model": "gpt-5-medium",
      "base_url": "http://localhost:8317/v1",
      "api_key": "dummy-not-used",
      "provider": "openai"
    },
    {
      "model": "gpt-5-high",
      "base_url": "http://localhost:8317/v1",
      "api_key": "dummy-not-used",
      "provider": "openai"
    },
    {
      "model": "gpt-5-codex",
      "base_url": "http://localhost:8317/v1",
      "api_key": "dummy-not-used",
      "provider": "openai"
    },
    {
      "model": "gpt-5-codex-low",
      "base_url": "http://localhost:8317/v1",
      "api_key": "dummy-not-used",
      "provider": "openai"
    },
    {
      "model": "gpt-5-codex-medium",
      "base_url": "http://localhost:8317/v1",
      "api_key": "dummy-not-used",
      "provider": "openai"
    },
    {
      "model": "gpt-5-codex-high",
      "base_url": "http://localhost:8317/v1",
      "api_key": "dummy-not-used",
      "provider": "openai"
    }
  ]
}

Step 4: Use Factory CLI

  1. Launch Factory CLI:

    droid

  2. Select your model:

    /model

    Then choose from:

    • claude-sonnet-4-5-20250929 (Claude 4.5 Sonnet)
    • claude-opus-4-1-20250805
    • gpt-5, gpt-5-codex, etc.

  3. Start coding! Factory will now route all requests through VibeProxy, which handles authentication automatically.

Available Models

Claude Models

  • claude-opus-4-1-20250805 - Claude Opus 4.1 (Most powerful)
  • claude-sonnet-4-5-20250929 - Claude 4.5 Sonnet (Latest)

OpenAI Models

  • gpt-5 - Standard GPT-5
  • gpt-5-minimal / low / medium / high - Different reasoning effort levels
  • gpt-5-codex - Optimized for coding
  • gpt-5-codex-low / medium / high - Codex with different reasoning levels

Troubleshooting

VibeProxy Menu Bar Status

  • Green dot: Server is running
  • Red dot: Server is stopped
  • Click the status to toggle the server on/off

Connection Issues

Problem Solution
Can't connect to Claude/Codex Re-click "Connect" in VibeProxy settings
Factory shows 404 errors Make sure VibeProxy server is running (check menu bar)
Authentication expired Disconnect and reconnect the service in VibeProxy
Port 8317 already in use Quit any other instances of VibeProxy or CLIProxyAPI

Verification Checklist

  1. ✅ VibeProxy is running (menu bar icon shows green)
  2. ✅ Both Claude and Codex show as "Connected" in settings
  3. ✅ Factory CLI config has the custom models configured
  4. ✅ droid can select your custom models
  5. ✅ Test with a simple prompt: "what day is it?"

Tips

  • Launch at Login: Enable in VibeProxy settings to auto-start the server
  • Auth Folder: Click "Open Folder" in settings to view authentication tokens
  • Server Control: VibeProxy automatically stops the server and releases port 8317 when you quit

Security

  • All authentication tokens are stored locally in ~/.cli-proxy-api/
  • Token files are secured with proper permissions (0600)
  • VibeProxy only binds to localhost (127.0.0.1)
  • All upstream traffic uses HTTPS
  • Tokens are auto-refreshed before expiration

Acknowledgments

VibeProxy is built on top of CLIProxyAPI, an excellent unified proxy server for AI services. Without CLIProxyAPI's robust OAuth handling, token management, and API routing capabilities, this application would not be possible.

Special thanks to the CLIProxyAPI project and its contributors for creating the foundation that makes VibeProxy work.

References

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