🤖 Qwen Code OAuth Plugin for OpenCode

Authenticate OpenCode CLI with your qwen.ai account. This plugin enables you to use the coder-model with 1,000 free requests per day — powered by Qwen 3.6 Plus with video and vision support. No API key or credit card required!

🇧🇷 Leia em Português | 📜 Changelog

✨ Features

• 🔐 OAuth Device Flow - Secure browser-based authentication (RFC 8628)
• 🆓 1,000 req/day free - Free quota reset daily at midnight UTC
• ⚡ 60 req/min - Rate limit of 60 requests per minute
• 🧠 1M context window - Massive context support for large projects
• 🔄 Auto-refresh - Tokens renewed automatically before expiration
• ⏱️ Reliability - Built-in request throttling and automatic retry for transient errors
• 🔗 qwen-code compatible - Reuses credentials from ~/.qwen/oauth_creds.json

🚀 Installation

Edit ~/.config/opencode/opencode.json:

{
  "plugin": ["opencode-qwencode-auth"]
}

That's it! OpenCode will automatically install the plugin at startup.

Alternative installation methods

From npm (explicit version)

{
  "plugin": ["opencode-qwencode-auth@latest"]
}

From Git repository

{
  "plugin": ["opencode-qwencode-auth@git+https://github.com/gustavodiasdev/opencode-qwencode-auth.git#main"]
}

Specific version

{
  "plugin": ["opencode-qwencode-auth@1.3.0"]
}

⚠️ Limits & Quotas

• Rate Limit: 60 requests per minute
• Daily Quota: 1,000 requests per day (reset at midnight UTC)
• Web Search: 200 requests/minute, 1,000/day (separate quota)

Note: These limits are set by the Qwen OAuth API and may change. For professional use with higher quotas, consider using a DashScope API Key.

🔑 Usage

1. Login

Run the following command to start the OAuth flow:

opencode auth login

2. Select Provider

Choose "Other" and type qwen-code.

3. Authenticate

Select "Qwen Code (qwen.ai OAuth)".

• A browser window will open for you to authorize.
• The plugin automatically detects when you complete authorization.
• No need to copy/paste codes or press Enter!

🎯 Available Models

Coding Model

Model	Context	Max Output	Features
coder-model	1M tokens	Up to 64K tokens	Qwen 3.6 Plus — video & vision support

Note: This plugin aligns with the official qwen-code client. The coder-model alias maps to Qwen 3.6 Plus with hybrid reasoning, vision, and video input capabilities.

Using the model

opencode --provider qwen-code --model coder-model

🔧 Troubleshooting

"Invalid access token" or "Token expired"

The plugin usually handles refresh automatically. If you see this error immediately:

1. Re-authenticate: Run opencode auth login again.
2. Clear cache: Delete the credentials file and login again:

   rm ~/.qwen/oauth_creds.json
   opencode auth login
   

Rate limit exceeded (429 errors)

If you hit the 60 req/min or 1,000 req/day limits:

• Rate limit (60/min): Wait a few minutes before trying again
• Daily quota (1,000/day): Wait until midnight UTC for the quota to reset
• Web Search (200/min, 1,000/day): Separate quota for web search tool
• Consider using a DashScope API Key for professional use with higher quotas

Enable Debug Logs

If something isn't working, you can see detailed logs by setting the debug environment variable:

OPENCODE_QWEN_DEBUG=1 opencode

🛠️ Development

# Clone the repository
git clone https://github.com/gustavodiasdev/opencode-qwencode-auth.git
cd opencode-qwencode-auth

# Install dependencies
bun install

# Run tests
bun run tests/debug.ts full

Project Structure

src/
├── qwen/               # OAuth implementation
├── plugin/             # Token management & caching
├── utils/              # Retry, locking and logging utilities
├── constants.ts        # Models and endpoints
└── index.ts            # Plugin entry point

📄 License

MIT

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Made with ❤️ for the OpenCode community