📱 Remote Harness MCP — control any PC from Gemini (App & Web)

An MCP server that turns Google Gemini from a chatbot into a full-fledged mobile agent. Type a task in the Gemini app on your phone — your PC, laptop or server executes it, and Gemini reports back with real results.

English | 🇷🇺 Русская версия

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💡 The idea

Gemini in a browser or on a phone can talk, but it cannot do anything on your computer. Remote Harness MCP closes that gap. It is a free, open-source Model Context Protocol (MCP) server that you connect to Gemini Spark (gemini.google.com/customize/connectors or the Gemini mobile app) with a single link. After that, Gemini gets hands:

• runs shell commands, builds and tests code, manages git;
• reads, writes and edits files;
• searches the file system;
• starts long-running jobs and checks on them later;
• watches CPU, RAM and disk.

 📱 Gemini app / 🌐 gemini.google.com (Spark)
              │  MCP (SSE / Streamable HTTP)
              ▼
     ☁️  Gateway  racknerd-5a24bf9.merino-carob.ts.net   ← relay only, TLS
              │  outbound WebSocket tunnel (no open ports)
              ▼
   💻 Your PC · laptop · VPS · home server  →  executes the task

Result: your phone becomes a remote control for every machine you own — and Gemini is the agent that operates them.

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🔥 What you can do with it

Just ask Gemini in plain language, from anywhere:

• “Check why my home server is slow and show the top processes”
• “Pull the latest changes in ~/projects/api, run the tests and tell me what failed”
• “Fix the typo in config.yaml and restart the service”
• “Start a full backup in the background and tell me when it’s done”
• “How much free disk space is left on my laptop?”
• “Turn on the phone’s torch, and tell me its battery level and signal”

No SSH client, no terminal on your phone, no VPN — only a chat.

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📸 In action

Three exchanges from one chat, each answered by a different machine on the other side of the bridge. The phone never opened a terminal.

The laptop describes itself — “@Rem Matebook-deb, give me the system and hardware specs”:

The phone reports its own battery, radio and VPN — “@Rem Phone, check”. The SSID and both addresses are mosaicked; everything else came from device_info:

The desktop is photographed, published and read back — “take a screenshot of @RemMatebook-deb”, then “describe what is running on the screens”: