LM API Bridge

Prototype your AI ideas instantly, without the OpenAI bill.

[!IMPORTANT] This is an OpenAI API Simulator, not the actual OpenAI service. It is designed solely for verification and prototyping of AI workflows using your local VS Code models.

💡 Why use this?

Validate your prompt logic, LangChain workflows, or AI scripts for "free" by leveraging your existing GitHub Copilot subscription. Perfect for testing ideas before you commit to a commercial API subscription.

⚡ Quick Start

1. Launch: Open the sidebar panel, select a model, and click Start Server.
2. Connect: Update your app's configuration:
   • Base URL: http://127.0.0.1:9090/v1
   • API Key: sk-test (anything works)
   • Model: The ID shown in the bridge (e.g., copilot-gpt-4o)

🐍 Python Example

from openai import OpenAI
client = OpenAI(base_url="http://127.0.0.1:9090/v1", api_key="sk-test")

# Uses your local VS Code model!
response = client.chat.completions.create(
    model="copilot-gpt-4o", # The model selected in extension will actually work, not the one in the request.
    messages=[{"role": "user", "content": "Hello!"}]
)

Note:

This is a prototype and may not be suitable for production use. Requires GitHub Copilot Chat extension and Copilot enabled. The model selected will actually work, not the one in the request.