MCP 服务器

cyberrescue

A locally-hosted MCP (Model Context Protocol) server that gives Claude real tools to debug Docker containers — fetch logs, inspect memory/CPU, and run diagnostic commands inside a container, all from a chat with Claude Desktop.

README

🐋 CyberRescue

Give Claude eyes and hands inside your broken Docker containers.

📺 Live Triage Demonstration (33s)

https://github.com/user-attachments/assets/0ee0f583-b8c1-4abe-9dd4-4b59ec25fd49

CyberRescue

What it does

CyberRescue exposes three tools to Claude:

stream_container_logs — fetch stdout/stderr logs from a container by ID or name (tail, since-timestamp, keyword filter; 50KB hard cap with truncation flag).
inspect_memory_dump — live CPU/memory snapshot via docker stats, plus top processes via ps aux --sort=-%mem.
execute_isolated_script — run a shell command inside a container via docker exec, with input validation, a command blocklist, and a hard asyncio timeout.

Everything runs locally over stdio — no network ports, no cloud service, no API keys beyond what you already use for Claude Desktop.

Requirements

macOS (Apple Silicon) or Windows 10/11 with WSL2
Docker Desktop (running)
uv (Python package/project manager)
Claude Desktop

Setup — macOS

1. System tools

xcode-select --install
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
echo 'eval "$(/opt/homebrew/bin/brew shellenv)"' >> ~/.zprofile
eval "$(/opt/homebrew/bin/brew shellenv)"
brew install git
curl -LsSf https://astral.sh/uv/install.sh | sh
brew install --cask docker

Open Docker Desktop from Applications and let it finish starting (steady whale icon in the menu bar). Then install Claude Desktop from claude.ai → Download for Mac.

2. Clone and install

git clone https://github.com/vivekpatil200320/cyberrescue.git
cd cyberrescue
uv sync

3. Verify

uv run python -c "from cyberrescue.server import mcp; print('OK:', mcp.name)"
uv run pytest tests/ -v

4. Register with Claude Desktop

Find your uv path:

which uv

Edit (or create) ~/Library/Application Support/Claude/claude_desktop_config.json:

{
  "mcpServers": {
    "cyberrescue": {
      "command": "/Users/YOUR_USERNAME/.local/bin/uv",
      "args": [
        "run",
        "--project",
        "/Users/YOUR_USERNAME/path/to/cyberrescue",
        "python",
        "-m",
        "cyberrescue.server"
      ]
    }
  }
}

If the file already has other mcpServers entries, merge "cyberrescue" in as an additional key rather than overwriting the file.

Fully quit Claude Desktop (Cmd+Q) and reopen it. Check the tools/slider icon near the message box — cyberrescue should appear with all three tools listed.

Setup — Windows (via WSL2)

WSL2 is the recommended path because Docker Desktop for Windows runs its Linux containers through it, and python-on-whales/docker exec behave most predictably there.

1. Install WSL2 and Ubuntu

In an Administrator PowerShell:

wsl --install

Restart if prompted, then open the new "Ubuntu" app from the Start menu and finish the Linux user setup.

2. Install Docker Desktop for Windows

Download from docker.com, install, and during setup enable "Use WSL 2 based engine". In Docker Desktop settings, under Resources → WSL Integration, enable integration with your Ubuntu distro.

3. Inside the WSL Ubuntu terminal — install tooling

sudo apt update
sudo apt install -y git python3 build-essential
curl -LsSf https://astral.sh/uv/install.sh | sh
source ~/.bashrc

4. Clone and install

git clone https://github.com/vivekpatil200320/cyberrescue.git
cd cyberrescue
uv sync

5. Verify

uv run python -c "from cyberrescue.server import mcp; print('OK:', mcp.name)"
uv run pytest tests/ -v
docker ps -a

(docker ps should work inside WSL once Docker Desktop's WSL integration is enabled.)

6. Install Claude Desktop (native Windows)

Download from claude.ai → Download for Windows, install normally (not inside WSL).

7. Register with Claude Desktop

Find your uv path inside WSL:

which uv

Edit %APPDATA%\Claude\claude_desktop_config.json (open via File Explorer: paste %APPDATA%\Claude into the address bar) and add an entry that runs the server through WSL:

{
  "mcpServers": {
    "cyberrescue": {
      "command": "wsl.exe",
      "args": [
        "bash",
        "-c",
        "cd /home/YOUR_LINUX_USERNAME/cyberrescue && /home/YOUR_LINUX_USERNAME/.local/bin/uv run python -m cyberrescue.server"
      ]
    }
  }
}

Replace YOUR_LINUX_USERNAME and the path with your actual WSL username and clone location. Fully quit Claude Desktop and reopen it. Check the tools/slider icon — cyberrescue should appear with all three tools.

Usage

Ask Claude Desktop something like:

Debug the container named my-app: read the last 150 log lines, check its memory and CPU usage, and run printenv DATABASE_URL inside it.

Claude will call the three tools as needed and report back root cause and fix.

Demo containers

demo/ contains three intentionally broken images for testing:

broken_flask — crashes on startup with a missing-env-var KeyError
leaking_node — leaks ~10MB/sec until OOM-killed
crashed_nginx — fails to start due to invalid config syntax

docker build -t demo-broken-flask demo/broken_flask
docker build -t demo-leaking-node demo/leaking_node
docker build -t demo-crashed-nginx demo/crashed_nginx

Security

See SECURITY.md for the input validation, command blocklist, and concurrency/sanitization policy.

Future Enhancements

Standalone binary packaging (PyInstaller/Nuitka) for zero-Python-install distribution
Streaming log reads for very large logs (currently buffers full log before truncating)
Optional SQLite audit log for compliance use cases
Native (non-WSL) Windows support

License

MIT License

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.