# Cursor [Cursor](https://cursor.com) is an AI-powered code editor that offers models like Sonnet, Gemini, and GPT. Enable [CORS](https://developer.mozilla.org/en-US/docs/Web/HTTP/Guides/CORS) to serve local models (it's disabled by default for security). ```bash transformers serve --enable-cors ``` Cursor requires a public address to reach your local server. Use [ngrok](https://ngrok.com/) to create a tunnel. Sign up, authenticate, and run this command. ```bash ngrok http localhost:8000 ```

Open Cursor and go to **Settings > Cursor Settings > Models > API Keys**. 1. Deselect all models in the list. 2. Add your desired model (Qwen/Qwen3-4B). 3. Enter any text in the **OpenAI API Key** field (required). 4. Paste the ngrok Forwarding address into **Override OpenAI Base URL**. Append `/v1` to the URL (https://...ngrok-free.app/v1). 5. Click **Verify**. Your model is ready to use.