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# ⚡ Gemini Antigravity Bridge
### The World's First Bidirectional MCP Bridge Between Google Gemini Spark & DeepMind Antigravity
[](https://pypi.org/project/gemini-antigravity-bridge/)
[](https://doi.org/10.5281/zenodo.22259022)
[](https://glama.ai/mcp/servers/nandhakumar-murugan/gemini-antigravity-bridge)
[](https://github.com/punkpeye/awesome-mcp-servers#coding-agents)
[](https://python.org)
[](https://modelcontextprotocol.io)
[](LICENSE)
[](https://discuss.ai.google.dev/t/show-tell-gemini-antigravity-bridge-bidirectional-mcp-agent-orchestration-between-gemini-spark-deepmind-antigravity/180640/1)
[](tests/)
[](https://doi.org/10.5281/zenodo.22259022)
[](https://gemini.google.com)
[](https://deepmind.google)
[](https://ai.google.dev/)
[](https://github.com/nandhakumar-murugan/gemini-antigravity-bridge/stargazers)
[](https://github.com/nandhakumar-murugan/gemini-antigravity-bridge/discussions)
**Connect Google's cloud AI (Gemini Spark powered by Gemini 3.8 / 3.7) to your local agentic IDE (Antigravity) with 24 powerful MCP tools, hardened by OpenAgentShield Zero-Trust runtime sandboxing and automatic credential redaction.**
[Quick Start](#-quick-start) · [Architecture](#-architecture) · [Tools](#-available-tools-24) · [Connected Apps](#-spark-connected-apps) · [Deploy](#-deployment)
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---
## 🌐 What Is This?
**Gemini Antigravity Bridge** is an MCP (Model Context Protocol) server that creates a **persistent, bidirectional communication channel** between:
- ☁️ **Google Gemini Spark** (cloud-based AI assistant with Google Workspace access, powered by Gemini 3.8 / 3.7)
- 💻 **Google DeepMind Antigravity** (local agentic IDE with full system access)
Optimized for **Gemini 3.8's next-generation agentic reasoning**, this enables a **fully autonomous loop** where Spark can dispatch coding tasks to your local machine, and Antigravity can request cloud intelligence back from Spark — all through a standardized, secure protocol.
```
┌──────────────────────────────────────────────────────────────────┐
│ GEMINI SPARK (Google Cloud) │
│ 📬 Gmail │ 📁 Drive │ 📅 Calendar │ 🎨 Canva │ 🎥 YouTube │
└─────────────────────────┬────────────────────────────────────────┘
│ MCP over HTTPS
▼
┌──────────────────────────────────────────────────────────────────┐
│ ⚡ GEMINI ANTIGRAVITY BRIDGE (MCP Server) │
│ │
│ 🔧 System Commands 📂 File Operations 🤖 Agent Dispatch │
│ 🧠 Shared Memory 🔄 Project Sync 📊 Status Reports │
│ │
│ Tunnel: ngrok / Cloudflare (permanent HTTPS domain) │
└─────────────────────────┬────────────────────────────────────────┘
│ Local MCP + Message Injection
▼
┌──────────────────────────────────────────────────────────────────┐
│ ANTIGRAVITY IDE (Local Machine) │
│ 🖥️ Terminal │ 📝 Code Editor │ 🌳 Git │ 🧪 Tests │ 🚀 Deploy │
└──────────────────────────────────────────────────────────────────┘
```
---
## 🏆 Why This Bridge?
| Feature | This Project | Other MCP Servers |
|---|:---:|:---:|
| Bidirectional Cloud ↔ Local | ✅ | ❌ |
| Autonomous Agent Task Dispatch | ✅ | ❌ |
| Cross-Agent Shared Memory | ✅ | ❌ |
| Antigravity Conversation Injection | ✅ | ❌ |
| Spark Connected Apps Orchestration | ✅ | ❌ |
| Google Workspace Integration | ✅ (via Spark) | Partial |
| Local File System Access | ✅ | Some |
| System Command Execution | ✅ | Some |
---
## 🚀 Quick Start
### Prerequisites
- Python 3.10+
- [ngrok account](https://ngrok.com) (free tier) with a reserved domain
- Google Gemini Spark (Advanced/Ultra subscription)
- Google DeepMind Antigravity IDE
### Installation
```bash
# Clone the repository
git clone https://github.com/nandhakumar-murugan/gemini-antigravity-bridge.git
cd gemini-antigravity-bridge
# Install dependencies or install package directly
pip install -r requirements.txt
# OR install as a CLI tool:
pip install -e .
# Configure environment
cp .env.example .env
# Edit .env with your NGROK_AUTHTOKEN and NGROK_DOMAIN
# Launch the bridge (via script or CLI)
gemini-bridge
# or: python run_with_tunnel.py
```
### Connect to Gemini Spark
1. Open [Gemini Spark](https://gemini.google.com) → Settings → Connected Apps
2. Click **"Add a custom app"**
3. Enter your public MCP URL: `https://your-domain.ngrok-free.dev/mcp`
4. Spark will discover all 23 tools automatically!
---
## 🛠️ Available Tools (24)
### 🔧 System Execution
| Tool | Description |
|---|---|
| `run_system_command` | Execute shell/PowerShell command with AST risk analysis and captured output |
| `run_batch_commands` | Run multiple commands sequentially with error handling and policy validation |
### 📂 File Operations
| Tool | Description |
|---|---|
| `read_file` | Read file contents with sensitive credential protection |
| `write_file` | Create or overwrite files with automatic secret redaction |
| `edit_file` | Surgically edit specific lines in existing files |
| `append_file` | Append content to the end of a file |
| `batch_write_files` | Create multiple files in a single operation with policy enforcement |
| `create_full_project` | Scaffold an entire project directory structure |
| `list_directory` | List directory contents with metadata |
### 🤖 Agent Orchestration
| Tool | Description |
|---|---|
| `run_agent_task` | Launch an autonomous Antigravity coding subagent |
| `get_agent_status` | Check status and output of a running agent task |
| `terminate_task` | Kill a running agent task |
### 🛡️ Zero-Trust Security & Telemetry (OpenAgentShield)
| Tool | Description |
|---|---|
| `get_security_audit_log` | Retrieves OpenAgentShield Zero-Trust audit events, blocked attacks, and system risk scores (DOI: 10.5281/zenodo.22259022) |
### 🧠 Shared Memory & Sync
| Tool | Description |
|---|---|
| `get_bridge_history` | Retrieve full cross-client operation history with redacted credentials |
| `save_session_note` | Write a structured note to shared memory (tagged) |
| `get_session_notes` | Read session notes by tag or date range |
| `sync_project_to_gemini` | Sync project metadata to Spark's knowledge base |
| `git_quick_status` | Quick Git status check for any repository |
### 🌐 Spark Connected Apps
| Tool | Description |
|---|---|
| `request_spark_connected_app_action` | Dispatch tasks to Spark's connected apps (@Canva, @YouTube, @Gmail, etc.) |
| `get_spark_connected_apps_catalog` | List all available connected apps and capabilities |
### 🔗 Antigravity Deep Integration
| Tool | Description |
|---|---|
| `list_antigravity_conversations` | List all active Antigravity IDE conversations |
| `inject_message` | Inject a structured message directly into an Antigravity conversation |
| `send_spark_to_antigravity_task` | Dispatch a full task brief from Spark to Antigravity |
| `get_antigravity_agent_report` | Get the latest execution report for Spark to review |
---
## 🔄 Spark Connected Apps
Through the bridge, Antigravity can orchestrate Spark's connected Google & third-party apps:
| App | Capabilities |
|---|---|
| 🎨 **@Canva** | Poster design, infographics, slide decks |
| 📁 **@Google Drive** | Cloud file search, folder management |
| 📝 **@Google Docs** | Document creation and collaboration |
| 📌 **@Google Keep** | Quick notes, flashcards, checklists |
| 🎥 **@YouTube** | Video search, transcript extraction |
| 📬 **@Gmail** | Email reading, URL extraction |
| 📓 **@Gemini Notebook** | Deep research and synthesis |
| 📦 **@Dropbox** | Cloud storage sync via MCP |
---
## 🏗️ Architecture
```mermaid
graph TB
subgraph Cloud["☁️ Google Cloud"]
Spark["Gemini Spark<br/>Consumer AI Assistant"]
Gmail["📬 Gmail"]
Drive["📁 Google Drive"]
Calendar["📅 Google Calendar"]
Canva["🎨 Canva"]
end
subgraph Bridge["⚡ Antigravity Bridge"]
MCP["MCP Server<br/>(FastMCP + Starlette)"]
Tunnel["HTTPS Tunnel<br/>(ngrok / Cloudflare)"]
Memory["🧠 Shared Memory<br/>(bridge_history.json)"]
Dashboard["📊 Web Dashboard"]
end
subgraph Local["💻 Local Machine"]
AGY["Antigravity IDE"]
Terminal["🖥️ Terminal"]
Git["🌳 Git Repos"]
Files["📂 File System"]
end
Spark -->|"MCP over HTTPS"| Tunnel
Tunnel --> MCP
MCP -->|"inject_message"| AGY
MCP -->|"run_system_command"| Terminal
MCP -->|"git_quick_status"| Git
MCP -->|"read/write_file"| Files
MCP --> Memory
AGY -->|"save_session_note"| Memory
Memory -->|"get_agent_report"| Spark
Spark --> Gmail
Spark --> Drive
Spark --> Calendar
Spark --> Canva
```
---
## 🚢 Deployment
### Auto-Start on Windows Boot
The bridge includes a silent startup script that launches automatically when you log in:
```
📁 %APPDATA%\Microsoft\Windows\Start Menu\Programs\Startup\
└── GeminiAntigravityBridge.vbs (silent background launcher)
```
### Cloud Deployment (24/7 Uptime)
```bash
# Using Docker
docker build -t gemini-antigravity-bridge .
docker run -d -p 8000:8000 --env-file .env gemini-antigravity-bridge
# Using Render.com / Google Cloud Run
# Push to GitHub → Connect repo → Deploy automatically
```
---
## 📋 Scheduled Monitoring
The bridge supports multi-tier automated monitoring via Gemini Spark schedules:
| Tier | Cadence | Purpose |
|---|---|---|
| 🔴 **Instant Trigger** | Real-time (on email arrival) | Zero-delay alerts for college & NPTEL emails |
| 🟡 **Hourly Sweep** | Every 60 minutes | Broad monitoring across all platforms |
| 🟢 **Morning Briefing** | Daily @ 8:00 AM | Strategic daily plan with exam schedules |
---
## 🤝 Contributing
Contributions are welcome! Please read the [Apache 2.0 License](LICENSE) before submitting PRs.
1. Fork the repository
2. Create your feature branch (`git checkout -b feat/amazing-feature`)
3. Commit your changes (`git commit -m 'feat: add amazing feature'`)
4. Push to the branch (`git push origin feat/amazing-feature`)
5. Open a Pull Request
---
## 📄 License
This project is licensed under the **Apache License 2.0** — see the [LICENSE](LICENSE) file for details.
---
## 📚 Research Paper & Academic Citation
This framework implements the formal architecture introduced in the published research paper:
> **AgentShield: A Zero-Trust Runtime Guardrail Architecture for Autonomous Multi-Agent AI Systems with Bidirectional Context Synchronization**
> *Nandhakumar Murugan*
> Department of Computer Science and Engineering (Cybersecurity), KGiSL Institute of Technology (KiTE), Autonomous
> **Permanent DOI**: [10.5281/zenodo.22259022](https://doi.org/10.5281/zenodo.22259022) | **Open Access**: [Zenodo CERN Repository](https://zenodo.org/records/22259022)
If you reference or build upon this architecture in academic or enterprise research, please cite:
```bibtex
@article{murugan2026agentshield,
title={AgentShield: A Zero-Trust Runtime Guardrail Architecture for Autonomous Multi-Agent AI Systems with Bidirectional Context Synchronization},
author={Murugan, Nandhakumar},
journal={Zenodo},
year={2026},
doi={10.5281/zenodo.22259022},
url={https://doi.org/10.5281/zenodo.22259022}
}
```
---
## 👨💻 Author
**Nandhakumar Murugan**
B.E. Computer Science & Cyber Security | KGiSL Institute of Technology
Google Student Ambassador (GID: 36) | Open Source Contributor
[](https://github.com/nandhakumar-murugan)
[](https://linkedin.com/in/nandhakumar-murugan)
---
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**Built with ❤️ using Google Gemini, DeepMind Antigravity & Model Context Protocol**
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