shell-mcp

shell-mcp

3.3

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An MCP server implementation that provides secure shell command execution capabilities for LLMs.

shell-mcp

Shell command execution MCP server

An MCP server implementation that provides secure shell command execution capabilities for LLMs.

Features

  • Secure Execution: Whitelisted commands and arguments only
  • Resource Control: Memory and CPU usage monitoring
  • Timeout Control: Automatic termination of long-running commands
  • Size Limits: Output size restrictions for safety
  • MCP Integration: Works with Claude and other MCP-compatible LLMs

Installation

npm install @kevinwatt/shell-mcp

Configuration with Dive Desktop

  1. Click "+ Add MCP Server" in Dive Desktop
  2. Copy and paste this configuration:
{
  "mcpServers": {
    "shell": {
      "command": "npx",
      "args": [
        "-y",
        "@kevinwatt/shell-mcp"
      ]
    }
  }
}

Tool Documentation

  • shell_ls, shell_pwd, shell_df, etc.
    • Execute whitelisted shell commands
    • Inputs:
      • command (string, required): Command to execute
      • args (array, optional): Command arguments
      • timeout (number, optional): Execution timeout in ms

Usage Examples

Ask your LLM to:

"Show current directory using shell_pwd"
"List files using shell_ls with -l argument"
"Check disk usage using shell_df with -h argument"

Manual Start

If needed, start the server manually:

npx @kevinwatt/shell-mcp

Requirements

  • Node.js 18+
  • MCP-compatible LLM service

Development

# Install dependencies
npm install

# Watch mode
npm run watch

# Run tests
npm test

# Lint
npm run lint

License

MIT © Dewei Yen

Keywords

  • mcp
  • shell
  • command
  • claude
  • llm
  • automation

Available Commands

The following shell commands are available:

CommandDescriptionAllowed Arguments
lsList directory contents-l, -a, -h, -R, --help, *
catConcatenate and display file contents-n, -b, --help, *
pwdShow current working directoryNone
dfShow disk usage-h, -T, --help
echoDisplay textAny text
psShow process status-e, -f, -u, --help
freeShow memory usage-h, -m, -g, --help
uptimeShow system uptimeNone
dateShow system date and time+%Y-%m-%d, +%H:%M:%S, --help
grepSearch text patterns in files-i, -v, -n, -r, -l, --color, *
wShow who is logged on and what they are doing-h, -s, --no-header, --help
whoisQuery WHOIS domain registration information-H, *
findSearch for files in a directory hierarchy-name, -type, -size, -mtime, *
netstatNetwork connection information-a, -n, -t, -u, -l, -p, --help
lspciList PCI devices-v, -k, -mm, -nn, --help
lsusbList USB devices-v, -t, -d, -s, --help
digDNS lookup utility+short, +trace, +dnssec, @*, *
nslookupQuery DNS records-type=, -query=, *
ipShow network devices and interfacesaddr, link, route, neigh, -br, *
whereisLocate binary, source and manual files-b, -m, -s, *