Enable Opencode to authenticate against Antigravity (Google's IDE) via OAuth so you can use Antigravity rate limits and access models like gemini-3-pro and claude-opus-4-5-thinking with your Google credentials.
Google Antigravity (agy) OAuth auth + model access plugin for DeepSeek Harness: multi-account pool, 429 rotation, device fingerprinting, CLI and web login.
Antigravity Manager is a desktop application for managing the Google accounts used by Antigravity clients (including Classic, Antigravity IDE and agy CLI). View model quota in real time, switch client accounts seamlessly, and connect AI coding tools like Claude Code, Codex and OpenCode through a high-performance local API gateway.
Wrap Antigravity, ChatGPT Codex, Claude Code, Grok Build, Muse Code, Devin as an OpenAI/Gemini/Claude/Codex compatible API service, allowing you to enjoy the free Gemini Series, GPT Series, Grok Series, Claude model through API