mcp-server-commands

by g0t4
  • OS Automation
  • Developer Tools
JavaScript
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21
  • Apple
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security – no known vulnerabilities (report Issue)
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license - not found
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quality - confirmed to work

An MCP server to run commands.

  1. Tools
  2. Prompts
  3. Resources
  4. Server Configuration
  5. README.md

Prompts

Interactive templates invoked by user choice

NameDescription
run_commandInclude command output in the prompt. Instead of a tool call, the user decides what commands are relevant.

Resources

Contextual data attached and managed by the client

NameDescription

No resources

Tools

Functions exposed to the LLM to take actions

NameDescription
run_command
run_script

Server Configuration

Describes the environment variables required to run the server.

NameRequiredDescriptionDefault

No arguments

README.md

mcp-server-commands

An MCP server to run commands.

Published to npm as mcp-server-commands using this workflow

[!WARNING] Be careful what you ask this server to run! In Claude Desktop app, use Approve Once (not Allow for This Chat) so you can review each command, use Deny if you don't trust the command. Permissions are dictated by the user that runs the server. DO NOT run with sudo.

Tools

Tools are for LLMs to request, i.e. Claude Desktop app. Claude Sonnet 3.5 intelligently uses both tools, I was pleasantly surprised.

  • run_command - run a command, i.e. hostname or ls -al or echo "hello world" etc
    • Returns STDOUT and STDERR as text
  • run_script - run a script! (i.e. fish, bash, zsh, python)
    • Let your LLM run the code it writes!
    • script is passed over STDIN
    • run_script == run_command + script over STDIN
    • Claude has been pretty creative with this, i.e. using cat as the interpreter to create new files!

Prompts

Prompts are for users to include in chat history, i.e. via Zed's slash commands (in its AI Chat panel)

  • run_command - generate a prompt message with the command output

Development

Install dependencies:

npm install

Build the server:

npm run build

For development with auto-rebuild:

npm run watch

Installation

To use with Claude Desktop, add the server config:

On MacOS: ~/Library/Application Support/Claude/claude_desktop_config.json On Windows: %APPDATA%/Claude/claude_desktop_config.json

Use the published npm package

{ "mcpServers": { "mcp-server-commands": { "command": "npx", "args": ["mcp-server-commands"] } } }

Use a local build (repo checkout)

{ "mcpServers": { "mcp-server-commands": { // works b/c of shebang in index.js "command": "/path/to/mcp-server-commands/build/index.js" } } }

Logging

Claude Desktop app writes logs to ~/Library/Logs/Claude/mcp-server-mcp-server-commands.log

By default, only important messages are logged (i.e. errors). If you want to see more messages, add --verbose to the args when configuring the server.

By the way, logs are written to STDERR because that is what Claude Desktop routes to the log files. In the future, I expect well formatted log messages to be written over the STDIO transport to the MCP client (note: not Claude Desktop app).

Debugging

Since MCP servers communicate over stdio, debugging can be challenging. We recommend using the MCP Inspector, which is available as a package script:

npm run inspector

The Inspector will provide a URL to access debugging tools in your browser.

GitHub Badge

Glama performs regular codebase and documentation scans to:

  • Confirm that the MCP server is working as expected.
  • Confirm that there are no obvious security issues with dependencies of the server.
  • Extract server characteristics such as tools, resources, prompts, and required parameters.

Our directory badge helps users to quickly asses that the MCP server is safe, server capabilities, and instructions for installing the server.

Copy the following code to your README.md file:

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