Dynamic Shell Server MCP Server

@codelion

Repository

Basic information

About Dynamic Shell Server MCP Server

Dynamic Shell Command MCP Server

#dynamic-shell-server#shell-commands#security

Dynamic Shell Server MCP Server config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "dynamic-shell-server": {
      "command": "python",
      "args": [
        "-m",
        "venv",
        "venv"
      ]
    }
  }
}

Dynamic Shell Server MCP Server tools

`command`: The command to execute

`command`: The command to revoke approval for

Overview

What is Dynamic Shell Server?

Dynamic Shell Server is a Model Context Protocol (MCP) server that enables secure execution of shell commands with a dynamic approval system. It allows running arbitrary commands while maintaining security through user approval and audit logging. This server is designed for developers using MCP-compatible clients like Claude Desktop.

How to use Dynamic Shell Server?

Install by cloning the repository, setting up a Python virtual environment, and installing dependencies. Run standalone with python dynamic_shell_server.py or integrate with Claude Desktop by adding its configuration to claude_desktop_config.json. When a command is executed for the first time, the user is prompted to allow it once, allow and remember, or deny execution.

Key features of Dynamic Shell Server

Dynamic command approval system with user prompts
Persistent storage of approved commands
Comprehensive audit logging of all executions
5-minute command timeout protection
Command revocation capability for previously approved commands
No shell execution to prevent injection attacks

Use cases of Dynamic Shell Server

Execute shell commands through Claude Desktop with user approval
Run project setup commands like npm install only after approval
Approve commonly used commands once for repeated safe execution
Revoke approval for commands that should no longer be allowed
Maintain an audit trail of all command executions

Frequently asked questions

How does the command approval process work?

When a command is run for the first time, the server prompts the user to allow it once, allow it and remember the approval, or deny execution. Approved commands are stored persistently.

Where does Dynamic Shell Server store its data?

Data is stored in the directory `~/.config/mcp-shell-server/`, containing `approved_commands.json` (list of approved commands) and `audit.log` (execution history).

What security features protect against command injection?

The server does not use shell execution, preventing shell injection attacks. It also requires user approval for first-time command execution and logs all commands.

Is there a timeout for command execution?

Yes, commands have a 5-minute timeout protection to prevent runaway processes.

Can I revoke approval for a previously approved command?

Yes, the `revoke_command_approval` tool allows revoking approval for any command that was previously approved.

Comments

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