A production-grade VS Code extension that integrates custom language models into the native Copilot Chat experience via the official Language Model Chat Provider API.
Installation
Launch VS Code Quick Open (Ctrl+P), paste the following command, and press enter.
A production-grade VS Code extension that integrates custom language models into the native Copilot Chat experience via the official Language Model Chat Provider API.
Features
Native Integration: Use custom models directly within VS Code's Copilot Chat (@antigravity).
BYOK Auto-Fix: Automatically configures VS Code's utility models to prevent "No utility model configured" errors when using Bring Your Own Key (BYOK) providers.
Customizable Models: Choose your primary model for code generation and a lightweight model for background tasks.
Dashboard UI: View the status of your local proxy and available models.
Streaming Support: Enjoy real-time streaming responses in Copilot Chat.
Installation
Download the .vsix package from the releases page.
Open VS Code.
Go to the Extensions view (Ctrl+Shift+X or Cmd+Shift+X).
Click the ... menu in the top right of the Extensions view.
Select Install from VSIX...
Choose the downloaded .vsix file.
Configuration
Configure the extension by navigating to Settings (Ctrl+, or Cmd+,) and searching for Antigravity Copilot.
Available Settings
antigravityCopilot.defaultModel: Primary model for chat conversations and code generation.
antigravityCopilot.utilityModel: Lightweight model for background Copilot utility tasks (title generation, summaries). Choose a faster/cheaper model here.
antigravityCopilot.backendUrl: Base URL of the local proxy API server.
antigravityCopilot.cliPath: Path to the Antigravity CLI executable.
antigravityCopilot.logging.verbose: Enable verbose mode to log request/response payloads.
BYOK Utility Model Fix
When using a custom model as your primary Copilot agent, VS Code requires a utility model for background tasks. This extension automatically configures the necessary settings (github.copilot.chat.byokUtilityModelDefault, chat.utilityModel, chat.utilitySmallModel) based on your antigravityCopilot.utilityModel selection.
