🚀 Antigravity Claude Code Proxy

Use Claude Code CLI with Gemini, GPT-5, Grok, and 20+ AI models

A production-ready multi-provider AI gateway with automatic load balancing,
real-time status bar integration, and beautiful monitoring dashboard

What is this? • Features • Quick Start • Models • Dashboard • Status Bar

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📖 What is this?

Antigravity Claude Proxy is a local proxy server that enables Claude Code CLI to use multiple AI providers:

Without Proxy	With Proxy
Only Claude models	20+ AI models (Gemini, GPT-5, Grok, Claude, etc.)
Single account	Multi-account load balancing
No monitoring	Real-time dashboard
No status	Status bar integration

How it Works

┌─────────────────┐      ┌──────────────────────┐      ┌─────────────────────┐
│                 │      │                      │      │                     │
│  Claude Code    │─────▶│  Antigravity Proxy   │─────▶│  Google AI (Gemini) │
│  CLI/Extension  │      │  localhost:8080      │      │  + Perplexity       │
│                 │      │                      │      │  + More providers   │
└─────────────────┘      └──────────────────────┘      └─────────────────────┘

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🖼️ Showcase

Real-time dashboard with multi-account load balancing and usage stats

Click status bar to see Claude & Gemini quotas with reset times

One-click model switching between Flash, Pro, Opus, Sonnet, and more

Live model indicator in your IDE status bar (⚡ Flash, 💎 Pro, 🎭 Opus)

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✨ Features

🎯 Core Capabilities

Feature	Description
Multi-Provider Access	Use Gemini, GPT-5, Grok, Claude, Kimi, and more through one API
Automatic Load Balancing	Smart rotation across 4+ Google accounts with cooldown
Status Bar Integration	See current model with emoji icons (⚡💎🎭🎵)
Beautiful Dashboard	Monitor accounts, usage, and switch models at localhost:8080
Auto-Start	Proxy starts automatically when you open your IDE
Model Persistence	Your selected model survives restarts

🧠 Smart Features

• 🔄 Smart Routing: Extension dropdown Opus/Haiku/Default pass-through, Custom uses dashboard
• ⚡ Agentic Fallback: Chat-only models auto-switch to agentic models for file operations
• 📊 Usage Tracking: Per-model and per-account statistics
• 🛡️ Rate Limit Recovery: Automatically rotates to healthy accounts

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🚀 Quick Start

Prerequisites

• Node.js 18+
• PM2 (process manager) - npm install -g pm2
• Antigravity desktop app (Download) or VS Code
• Claude Code CLI (npm install -g @anthropic-ai/claude-code)

Installation

# Clone the repository
git clone https://github.com/ai-dev-2024/Antigravity-Claude-Code-Proxy.git
cd Antigravity-Claude-Code-Proxy/Antigravity-Claude-Code-Proxy

# Install dependencies
npm install

# Start the proxy (runs as persistent background service)
pm2 start src/server.js --name antigravity-proxy
pm2 save

Configure Environment

Windows (PowerShell):

[Environment]::SetEnvironmentVariable("ANTHROPIC_BASE_URL", "http://localhost:8080", "User")
[Environment]::SetEnvironmentVariable("ANTHROPIC_API_KEY", "antigravity-proxy", "User")

macOS/Linux:

echo 'export ANTHROPIC_BASE_URL="http://localhost:8080"' >> ~/.bashrc
echo 'export ANTHROPIC_API_KEY="antigravity-proxy"' >> ~/.bashrc
source ~/.bashrc

Auto-Start on Windows Login (Recommended)

# Run the setup script:
cd scripts\setup
SETUP_STARTUP.bat

This will:

• Register the proxy with PM2
• Create a Windows startup script
• Proxy starts automatically on login

Start Using!

claude

Note: The proxy runs in the background via PM2. You can close any terminal or IDE window without affecting it. To check status: pm2 list. To stop: pm2 stop antigravity-proxy.

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🤖 Models

⚡ Agentic Models (Full Capabilities)

Model	Alias	Best For
gemini-3-flash	flash	Fast tasks, simple commands
gemini-3-pro-high	pro	Complex coding, deep analysis
claude-opus-4-5-thinking	opus	Complex reasoning
claude-sonnet-4-5-thinking	sonnet	Balanced performance

🔍 Search Models (Chat + Web Search)

Model	Provider	Description
pplx-grok	Perplexity	Grok 4.1 with web search
pplx-gpt51	Perplexity	GPT-5.1 chat
pplx-kimi	Perplexity	Kimi (Moonshot)
sonar	Perplexity	Web search focused

Model Switching

# In Claude Code chat:
/model flash        # Switch to Gemini 3 Flash
/model pro          # Switch to Gemini 3 Pro
/model grok         # Switch to Grok (Perplexity)

# Or use dashboard:
# Open http://localhost:8080/dashboard

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📊 Dashboard

Access the dashboard at http://localhost:8080/dashboard

Features:

• Account Monitor: See all accounts, their status, and remaining quota
• Model Switcher: Quick dropdown to change active model
• Usage Statistics: Track requests per model
• Health Status: Know when accounts are rate-limited

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📊 Status Bar Extension (v3.9+)

The status bar extension shows your current model and quota information in real-time:

Status Bar Icons

Icon	Model
⚡	Gemini Flash
💎	Gemini Pro
🎭	Claude Opus
🎵	Claude Sonnet
🌐	Grok
🔍	Perplexity/Sonar

Quota Popup (Click Account Icon)

• Model Quotas: Overall Claude & Gemini percentages with visual bars
• Per-Account Breakdown: All connected accounts with individual quotas
• Smart Sorting: Accounts with highest Claude quota shown first
• Reset Times: Know exactly when your quota resets

Features

• One-Click Model Switching: Click model name to switch instantly
• Real-Time Updates: 5-second polling for accurate quota display
• Offline Detection: Shows "Offline" in red when proxy is down
• Open Dashboard: Quick link to full web dashboard

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🔌 API Reference

Endpoint	Method	Description
/v1/messages	POST	Anthropic Messages API
/v1/models	GET	List available models
/active-model	GET/POST/DELETE	Model override control
/dashboard	GET	Web dashboard
/health	GET	Health check
/account-limits	GET	Account quotas

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📁 Project Structure

Antigravity-Claude-Code-Proxy/
├── src/
│   ├── server.js          # Main Express server
│   ├── account-manager.js # Multi-account handling
│   ├── constants.js       # Model aliases & config
│   └── public/
│       └── dashboard.html # Web dashboard
├── docs/
│   └── images/            # Showcase images
├── SECURITY.md            # Security policy
├── CHANGELOG.md           # Version history
└── package.json           # v2.5.0

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🔒 Security

• No credentials in code: All sensitive data stored locally
• Comprehensive .gitignore: Accounts, tokens, logs excluded
• npm audit: 0 vulnerabilities
• Local-only: Runs on localhost by default

See SECURITY.md for full security policy.

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📋 Version History

Version	Type	Features
v2.7	Extension v4.1.1	Per-window model selection, workspace persistence
v2.6	Extension	Per-session isolation, sessions dashboard
v2.5	Extension	IDE account switcher, simplified layout
v2.4	Extension	Direct OAuth, multi-state auth server
v2.3	Extension	Per-window models, dark theme dashboard
v2.2	Extension	PM2 process manager, Material Design
v2.1	Extension	Robust model routing, faster polling
v2.0	Extension	Status bar extension, model mapping
v1.2	CLI	Smart routing, model persistence
v1.1	CLI	Multi-account, Perplexity, dashboard
v1.0	CLI	Initial release

See CHANGELOG.md for detailed history.

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📜 License

MIT License - See LICENSE for details.

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Made with ❤️ for the Claude Code community
Report Bug • Request Feature

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