antigravity-claude-proxy
Proxy that exposes Antigravity provided claude / gemini models, so we can use them in Claude Code and OpenClaw (Clawdbot)
Antigravity Claude Proxy is a Node.js proxy server that exposes an Anthropic-compatible API backed by Antigravity's Cloud Code, enabling developers to use Claude and Gemini models with Claude Code CLI and OpenClaw without direct Anthropic API costs. The proxy translates requests between Anthropic Messages API format and Google Generative AI format, routing them through Antigravity's infrastructure. It supports multi-account load balancing, background process management, and includes a web dashboard for configuration and account management. Developers can toggle between the proxy (free via Google Cloud) and paid Anthropic credits directly from the settings interface.
Key Features
Use Cases
- 01Running Claude Code CLI without consuming Anthropic API credits by using Google Cloud infrastructure
- 02Testing Claude Opus and Sonnet models alongside Gemini models in the same development workflow
- 03Managing multiple Google accounts with automatic request distribution for quota balancing
- 04Setting up Claude Code on remote servers or Docker containers using headless OAuth
- 05Switching between free Antigravity-backed models and paid Anthropic API without reconfiguring
- 06Integrating Gemini models into OpenClaw/ClawdBot with Anthropic-compatible API format
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antigravity-claude-proxy — FAQ
What is the Antigravity Claude Proxy?+
It's a Node.js proxy server that translates Claude Code requests into Google Generative AI format and routes them through Antigravity's Cloud Code API, allowing you to use Claude and Gemini models without paying for Anthropic API credits. The proxy runs locally and presents an Anthropic-compatible interface.
How do I install the Antigravity Claude Proxy?+
Install it globally via npm with 'npm install -g antigravity-claude-proxy@latest' or run it directly using 'npx antigravity-claude-proxy@latest start'. You can also clone the GitHub repository and run 'npm install' followed by 'npm start'. After installation, authorize at least one Google account through the web dashboard or CLI.
Which AI clients work with this proxy?+
The proxy is designed for Claude Code CLI and OpenClaw (ClawdBot). Any client that supports the Anthropic Messages API format and allows custom base URLs can potentially use it.
Do I need an Anthropic API key to use this proxy?+
No, you don't need an Anthropic API key. Instead, you authorize one or more Google accounts through OAuth. The proxy uses a placeholder token ('test') for the ANTHROPIC_AUTH_TOKEN setting. If you have Antigravity installed locally, it can also auto-detect your existing session.
Is the Antigravity Claude Proxy free to use?+
Yes, the proxy software itself is MIT-licensed and free. It routes requests through Google Cloud infrastructure via Antigravity, avoiding Anthropic API costs. However, using this proxy may violate Google's Terms of Service, and some users have reported account bans—use a burner Google account at your own risk.
What are the prerequisites for running this proxy?+
You need Node.js 18 or later installed on your system. Optionally, having Antigravity installed enables automatic single-account mode, but you can also manually add Google accounts via OAuth through the web dashboard or CLI without it.
How do I install antigravity-claude-proxy?+
Open the source repository on GitHub and follow its README. antigravity-claude-proxy is a plugin — MCP Agents Market links you directly to the official repo.
Is antigravity-claude-proxy free?+
antigravity-claude-proxy is an open-source project hosted on GitHub. Check the repository for its license and any usage requirements.