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SSH MCP Server

by rorymcmahon
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Python
MIT License
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SSH MCP Server

Python 3.10+ License: MIT Pylint Safety Security Scan Dependency Security Check

An MCP (Model Context Protocol) server that provides SSH client functionality for remote Linux server management. This server enables AI assistants to execute commands on remote Linux hosts via SSH, solving the limitations of built-in tools when working with remote systems.

Why SSH MCP Server?

Built-in MCP tools are limited to local operations. This server extends AI capabilities to remote Linux systems by providing:

  • Remote Command Execution: Execute any command on remote Linux hosts

  • System Administration: Manage services, check system health, monitor processes

  • Secure Authentication: Multiple secure credential storage options

  • Enterprise Integration: Works with domain-joined systems and enterprise environments

Features

  • SSH Command Execution: Execute arbitrary commands on remote Linux hosts

  • Sudo Support: Run commands with elevated privileges (secure password handling)

Installation

From PyPI (Recommended)

pip install ssh-mcp-server

From Source

git clone https://github.com/rorymcmahon/ssh-mcp-server.git cd ssh-mcp-server pip install -e .

  • System Information: Get system stats, processes, disk usage, and services

  • Secure Credentials: Secure credential storage (currently macOS Keychain, expanding to other providers)

  • Connection Management: Automatic connection handling with timeouts

  • Error Handling: Comprehensive error reporting and recovery

  • Puppet Integration: Run Puppet agent in no-op mode for configuration management

Installation

From PyPI (when published)

pip install ssh-mcp-server

From Source

git clone https://github.com/rorymcmahon/ssh-mcp-server.git cd ssh-mcp-server pip install -e .

Development Installation

git clone https://github.com/rorymcmahon/ssh-mcp-server.git cd ssh-mcp-server pip install -e ".[dev]"

Configuration

MCP Client Configuration

Add to your MCP client configuration (e.g., Claude Desktop, Q CLI):

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

Available Tools

Core SSH Operations

execute_ssh(hostname: str, command: str)

Execute a command on a remote Linux host via SSH.

Parameters:

  • hostname: Target hostname (e.g., "server.company.local")

  • command: Command to execute

Returns:

{ "status": 0, "stdout": "total 24\ndrwxr-xr-x 3 user user 4096 ...", "stderr": "" }

Or on error:

{ "error": "SSH connection or authentication failed" }

execute_sudo(hostname: str, command: str)

Execute a command with sudo privileges. Automatically handles password input securely.

Returns: Same format as execute_ssh

System Information Tools

ssh_get_system_info(hostname: str)

Get basic system information (OS, kernel, memory, root disk usage).

get_running_processes(hostname: str)

Get top 10 CPU-consuming processes.

get_disk_usage(hostname: str)

Get disk usage for all mounted filesystems.

get_services(hostname: str)

Get top 20 running systemd services.

ssh_puppet_noop(hostname: str)

Run Puppet agent in no-op mode (dry run) with verbose output.

Usage Examples

Basic Command Execution

# Execute a simple command result = execute_ssh("server.company.local", "uptime") if "error" not in result: print(result["stdout"]) # System uptime information

System Administration

# Check system health system_info = ssh_get_system_info("server.company.local") disk_usage = get_disk_usage("server.company.local") processes = get_running_processes("server.company.local") # Restart a service with sudo result = execute_sudo("server.company.local", "systemctl restart nginx")

Error Handling

result = execute_ssh("server.company.local", "invalid_command") if "error" in result: print(f"Error: {result['error']}") elif result["status"] != 0: print(f"Command failed with exit code {result['status']}") print(f"Error output: {result['stderr']}")

Security Considerations

  • Credential Storage: Uses secure credential storage (Keychain, future: Vault, AWS Secrets Manager)

  • Network Security: Ensure SSH connections are over secure networks

  • Access Control: Limit SSH user permissions on target hosts

  • Audit Logging: Monitor SSH access and command execution

  • TouchID Protection: macOS Keychain integration requires TouchID/password for access

  • Password Security: Sudo passwords are passed securely via stdin, not visible in process lists

Development

Running Tests

pytest

Code Formatting

black src/ tests/ isort src/ tests/

Type Checking

mypy src/

Coverage Report

pytest --cov=ssh_mcp_server --cov-report=html

Contributing

  1. Fork the repository

  2. Create a feature branch (git checkout -b feature/amazing-feature)

  3. Make your changes

  4. Add tests for new functionality

  5. Ensure all tests pass (pytest)

  6. Format code (black and isort)

  7. Commit changes (git commit -m 'Add amazing feature')

  8. Push to branch (git push origin feature/amazing-feature)

  9. Open a Pull Request

Roadmap

  • SSH key-based authentication

  • AWS Secrets Manager credential provider

  • HashiCorp Vault credential provider

  • Azure Key Vault credential provider

  • Connection pooling and reuse

  • File transfer operations (SCP/SFTP)

  • Interactive shell sessions

  • Connection health monitoring

  • Batch command execution

  • Custom SSH client configuration

  • Windows support (additional credential providers)

License

This project is licensed under the MIT License - see the LICENSE file for details.

Support

This server cannot be installed

-
security - not tested
A
license - permissive license
-
quality - not tested

How are these scores calculated?

remote-capable server

The server can be hosted and run remotely because it primarily relies on remote services or has no dependency on the local environment.

Enables AI assistants to execute commands an

  1. Why SSH MCP Server?
    1. Features
      1. Installation
        1. From PyPI (Recommended)
        2. From Source
      2. Installation
        1. From PyPI (when published)
        2. From Source
        3. Development Installation
      3. Configuration
        1. MCP Client Configuration
      4. Available Tools
        1. Core SSH Operations
        2. System Information Tools
      5. Usage Examples
        1. Basic Command Execution
        2. System Administration
        3. Error Handling
      6. Security Considerations
        1. Development
          1. Running Tests
          2. Code Formatting
          3. Type Checking
          4. Coverage Report
        2. Contributing
          1. Roadmap
            1. License
              1. Support

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