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Antigravity Claude Proxy

A proxy server that exposes an Anthropic-compatible API backed by Antigravity’s Cloud Code, letting you use Claude and Gemini models with Claude Code CLI and OpenClaw / ClawdBot.
Terms of service warningGoogle has been issuing ToS violation bans on accounts connected to this proxy. Using this proxy may violate Google’s Terms of Service.High-risk scenarios:
  • Fresh Google accounts have a very high chance of getting banned
  • New accounts with Pro/Ultra subscriptions are frequently flagged and banned
By using this proxy, you acknowledge:
  • This is an unofficial tool not endorsed by Google
  • Your account may be suspended or permanently banned
  • You assume all risks associated with using this proxy
Recommendation: Use an established Google account that you don’t rely on for critical services. Avoid creating new accounts specifically for this proxy.

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How it works

┌──────────────────┐     ┌─────────────────────┐     ┌────────────────────────────┐
│   Claude Code    │────▶│  This Proxy Server  │────▶│  Antigravity Cloud Code    │
│   (Anthropic     │     │  (Anthropic → Google│     │  (daily-cloudcode-pa.      │
│    API format)   │     │   Generative AI)    │     │   sandbox.googleapis.com)  │
└──────────────────┘     └─────────────────────┘     └────────────────────────────┘
  1. Receives requests in Anthropic Messages API format
  2. Uses OAuth tokens from added Google accounts (or Antigravity’s local database)
  3. Transforms to Google Generative AI format with Cloud Code wrapping
  4. Sends to Antigravity’s Cloud Code API
  5. Converts responses back to Anthropic format with full thinking/streaming support

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Key features

Multi-model support

Access Claude models (Sonnet, Opus with thinking) and Gemini models (Flash, Pro) through a single API.

Intelligent load balancing

Three strategies for account selection: sticky (cache-optimized), round-robin (load-balanced), and hybrid (smart distribution).

Web management console

Real-time dashboard with Chart.js visualization, account management, quota monitoring, and live log streaming.

Prompt caching support

Organization-scoped caching maintains continuity across conversation turns with automatic session ID derivation.

Model fallback

Automatically switches to alternate models when quota is exhausted, with configurable fallback mappings.

Background process management

Launch as a detached background service that survives terminal closure, with simple CLI controls.

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Get started

Quickstart

Get up and running in under 5 minutes with step-by-step instructions.

Installation

Multiple installation methods including npm, npx, and git clone.

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Prerequisites

  • Node.js 18 or later
  • Antigravity installed (for single-account mode) OR Google account(s) for multi-account mode

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