[Show & Tell] Gemini Antigravity Bridge: Bidirectional MCP Agent Orchestration between Gemini Spark & DeepMind Antigravity

[Nandhakumar_Murugan]

Hi everyone!

I’m excited to share Gemini Antigravity Bridge, an open-source framework establishing a bidirectional bridge between Google Gemini Spark (cloud AI) and Google DeepMind Antigravity (local agentic coding IDE) via the Model Context Protocol (MCP).

• PyPI: gemini-antigravity-bridge · PyPI
• GitHub: GitHub - nandhakumar-murugan/gemini-antigravity-bridge: ⚡ Bridge connecting Google Gemini Spark & Cloud AI to your local machine via MCP with autonomous file creation, terminal execution, and subagent orchestration. · GitHub
• License: Apache 2.0

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Why We Built This: The Cloud ↔ Local Gap

Cloud models like Gemini Spark have incredible ecosystem intelligence across Google Workspace (Gmail, Drive, Calendar, Docs), but are decoupled from a developer’s local machine—unable to run local terminal commands or coding agent loops.

Meanwhile, local agentic IDEs like Google DeepMind Antigravity have full local execution power, but lack real-time connectivity to personal cloud workspaces.

Gemini Antigravity Bridge closes this loop completely.

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Key Technical Capabilities (23 MCP Tools):

1. Bidirectional Task Dispatch: Gemini Spark dispatches multi-step task briefs, launches local coding subagents (run_agent_task), and tracks progress.
2. Cross-Agent Shared Memory: Both Gemini Spark and Antigravity synchronize through a persistent state store (save_session_note, get_antigravity_agent_report).
3. Orchestrating Spark’s Connected Apps: Antigravity can command Gemini Spark to execute actions across @Canva, @YouTube, and @Google Docs.
4. Production Resiliency: Zero-delay webhook ingestion (/webhook), automated silent Windows startup, and 100% automated pytest test suite (6/6 passing).

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Quick Start:

Install directly via PyPI:

pip install gemini-antigravity-bridge
gemini-bridge

[Bitu79]

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[Nandhakumar_Murugan]

this exact concern is why we architected AgentShield alongside the bridge:

1. Zero-Trust Runtime Guardrails: Every system command is semantically intercepted and attested before execution.
2. Cryptographic Memory Ledgers: HMAC-SHA256 signed states ensure memory continuity cannot be hijacked.
3. Prompt Injection Triage: Actively filters adversarial jailbreaks across multi-turn agent dispatches.