Antigravity Universal AI Bridge

Use the Web AI model you already pay for, directly inside Antigravity IDE.

Gemini · Claude · ChatGPT · DeepSeek

Download · Setup guide (PDF) · Report a bug · Contribute

What is it?

The bridge connects Antigravity IDE to your already-open, logged-in Web AI tab (Gemini, Claude, ChatGPT or DeepSeek).

The IDE's local model is forced to act only as a context gatherer and file executor. All the heavy thinking (coding, debugging, architecture) is delegated to the Web AI model you prefer, and the answer is applied to your workspace files automatically. No copy-paste between browser and editor.

Same tools. Same subscription. A much stronger brain.

Related MCP server: antigravity-plugin-codex

How it works

flowchart LR
    A["1 · Antigravity IDE<br/>Agent chat"] --> B["2 · MCP server<br/>bridge.mjs<br/>ws://localhost:4545"]
    B --> C["3 · Chrome extension<br/>content.js"]
    C --> D["4 · Web AI tab<br/>your logged-in session"]
    D -. "5 · changes applied to your files" .-> A

Features

Requirements

• Node.js 18+

• Google Chrome (or any Chromium-based browser)

• Antigravity IDE

Install (3 steps)

1. Get the package. Download gemini-bridge.zip from the latest release and extract it to a permanent folder, e.g. D:/gemini-bridge. The release already includes node_modules, so no terminal is needed.

git clone https://github.com/Eyad-Eladawy/antigravity-universal-ai-bridge.git
cd antigravity-universal-ai-bridge
npm install

2. Load the Chrome extension.

1. Open chrome://extensions

2. Enable Developer mode (top-right)

3. Click Load unpacked and select the extension folder

4. Make sure the extension is enabled

3. Link the MCP server in Antigravity. Open Manage MCPs → View raw config (mcp_config.json) and add (update the path to where you extracted it):

{
  "mcpServers": {
    "gemini-web-pro": {
      "command": "node",
      "args": ["D:/gemini-bridge/extension/bridge.mjs"]
    }
  }
}

Save, then click Refresh in Manage MCP servers.

Daily use

1. Open a supported site in Chrome: gemini.google.com, claude.ai, chatgpt.com or chat.deepseek.com.

2. Click the floating status button at the top of the page once, until it turns green.

3. Type your task in the Antigravity Agent chat and press Proceed.

Need a fresh full-context bundle? Just open a New Chat in the browser tab.

Troubleshooting

• EADDRINUSE: address already in use :::4545: another bridge instance is running. End the Node.js processes in Task Manager, then click Refresh in Manage MCPs.

• Button stays yellow: check that the path in mcp_config.json points to the exact location of bridge.mjs, then click Refresh.

Full walkthrough with screenshots: docs/Setup-Guide.pdf.

Privacy & security

• Everything runs locally. The extension talks to ws://localhost:4545; nothing is sent to a Trignod server.

• On start, bridge.mjs writes a rule block to ~/.gemini/GEMINI.md (only if it's not already there). Review extension/bridge.mjs if you want to see exactly what it adds.

• The extension only runs on the four AI sites listed in manifest.json.

• Found a vulnerability? See SECURITY.md.

Contributing

Contributions are welcome. All changes go through a pull request and need the maintainer's approval before merging. Please read CONTRIBUTING.md first.

License

GPL-3.0 © 2026 Eyad / Trignod.ai

You are free to use, study, modify and share this project. If you distribute a modified version, it must stay open source under the same GPL-3.0 license.