🌉 AetherBridge

Your flat-rate AI subscription, now available as a local API.

AetherBridge unlocks the power of Google's Cloud Code Assist (Antigravity) and turns it into a local, OpenAI and Anthropic compatible API server. This lets you use powerful AI development tools like Claude Code, Gemini CLI, or Kuse Cowork without paying expensive per-token API fees.

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✨ Why AetherBridge?

• 💸 Zero Extra Cost: Uses your Google Cloud Code Assist quota via OAuth.
• 🚀 Advanced Models: Access Gemini 3 Pro, Gemini 3 Flash, and Claude 4.5 Sonnet & Opus (via Antigravity).
• 🧠 Thinking Mode: Supports extended thinking/reasoning capabilities.
• 🛡️ Secure: Standard Google OAuth 2.0 flow. No cookie extraction hacks needed.
• 🔌 Universal:
  • OpenAI-compatible endpoint: /v1/chat/completions
  • Anthropic-compatible endpoint: /v1/messages (for Claude Code CLI)
• 🖥️ TUI Dashboard: A beautiful terminal interface to manage connections and see logs.

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🚦 Quick Start

1. Prerequisites

• Rust installed (version 1.85+)
• A Google account with access to Project IDX or Cloud Code Assist.

2. Install & Run

git clone https://github.com/Brian-Zavala/AetherBridge.git
cd AetherBridge
cargo run --release

3. Login

You'll see the AetherBridge TUI dashboard.

• Press [L] to start the OAuth login flow.
• A browser window will open. detailed to allow AetherBridge access.
• Once authenticated, your account email will appear in the dashboard.

4. Connect Your Tools

🧠 Claude Code CLI

AetherBridge fully supports the official Claude Code CLI by spoofing the Anthropic API:

# Configure Claude Code to use AetherBridge
export ANTHROPIC_BASE_URL="http://127.0.0.1:8080"
export ANTHROPIC_API_KEY="aetherbridge"  # Dummy key

# Run the tool
claude

# ✅ Tool Use / Function Calling is fully supported!
# AetherBridge automatically handles tool schema compatibility and execution.

💻 VS Code Extensions (Continue, Roo Code, etc.)

Configure as an OpenAI-compatible provider:

• Base URL: http://127.0.0.1:8080/v1
• Model: antigravity-claude-sonnet-4-5 or antigravity-gemini-3-pro
• API Key: dummy

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🤖 Available Models

AetherBridge maps requests to the following internal Antigravity models:

Model ID (API)	Description
antigravity-claude-sonnet-4-5	Claude 4.5 Sonnet (Balanced)
antigravity-claude-sonnet-4-5-thinking	Claude 4.5 Sonnet with Thinking
antigravity-claude-opus-4-5-thinking	Claude 4.5 Opus (Reasoning)
antigravity-gemini-3-pro	Gemini 3 Pro (Reasoning)
antigravity-gemini-3-flash	Gemini 3 Flash (Speed)

Note: When using Claude Code CLI, standard Claude model names (e.g. claude-3-5-sonnet-20241022) are automatically mapped to the corresponding Antigravity model.

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❓ Troubleshooting

"Rate Limited?"

AetherBridge automatically handles rate limits. If you have multiple Google accounts, log in with all of them! AetherBridge will round-robin between accounts to maximize your throughput.

"OAuth doesn't open?"

Check your terminal output. If the browser doesn't open automatically, look for the authorization URL in the logs and copy-paste it into your browser manually.

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🌍 Platform Notes

OS	Notes
Linux 🐧	Uses libsecret (Gnome Keyring / KWallet) for secure token storage.
Windows 🪟	Uses Windows Credential Manager.
macOS 🍎	Uses macOS Keychain.

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Built with ❤️ and 🦀 Rust. Free and Open Source.