System Setup for MCP Servers

Automated installation and verification of MCP runtime dependencies.

When to Use

• •User reports MCP server failures due to missing runtimes
• •Setting up LibrAgent on a new machine
• •Troubleshooting "command not found" or "python/node not installed" errors
• •Verifying system readiness for MCP operations

Quick Start

Check Current Installation

Use platform detection and verification commands:

Windows (PowerShell):

Get-Command python -ErrorAction SilentlyContinue
Get-Command node -ErrorAction SilentlyContinue
Get-Command uv -ErrorAction SilentlyContinue

Linux/macOS (Bash):

which python3 && python3 --version
which node && node --version
which uv && uv --version

Installation Strategy

1. •Detect OS - Use run_in_terminal to identify platform
2. •Check existing installations - Verify versions and PATH configuration
3. •Install missing components - Follow OS-specific installation guides
4. •Verify installation - Confirm executables are accessible

Installation Guides

Python Installation

Windows:

• •Use Microsoft Store: winget install Python.Python.3.12
• •Or download from python.org (ensure "Add to PATH" is checked)
• •Verify: python --version

Linux:

# Ubuntu/Debian
sudo apt update && sudo apt install python3 python3-pip python3-venv

# Fedora/RHEL
sudo dnf install python3 python3-pip

# Arch Linux
sudo pacman -S python python-pip

macOS:

# Using Homebrew (recommended)
brew install python3

# Or use system Python (macOS 12.3+)
python3 --version

Node.js Installation

Windows:

# Using winget
winget install OpenJS.NodeJS.LTS

# Or download from nodejs.org

Linux:

# Ubuntu/Debian (NodeSource)
curl -fsSL https://deb.nodesource.com/setup_lts.x | sudo -E bash -
sudo apt-get install -y nodejs

# Fedora/RHEL
sudo dnf install nodejs npm

# Arch Linux
sudo pacman -S nodejs npm

macOS:

# Using Homebrew
brew install node

uv Installation

All Platforms:

# Using pip (after Python is installed)
pip install uv

# Or using pipx (recommended for isolated installation)
pip install pipx
pipx install uv

Windows PowerShell (standalone):

irm https://astral.sh/uv/install.ps1 | iex

Linux/macOS (standalone):

curl -LsSf https://astral.sh/uv/install.sh | sh

Verification

After installation, verify all components:

# Python
python --version  # or python3 --version
pip --version

# Node.js
node --version
npm --version

# uv
uv --version

Expected output format:

• •Python: Python 3.11+
• •Node: v18.0.0+
• •uv: 0.1.0+

Common Issues

PATH Not Updated

Symptoms: command not found after installation

Solutions:

• •Windows: Restart terminal or reboot system
• •Linux/macOS: Run source ~/.bashrc or source ~/.zshrc
• •Manually add to PATH if needed (see PATH_CONFIG.md)

Python vs Python3

Linux/macOS: Use python3 and pip3 explicitly Windows: Usually aliased to python and pip

Permission Issues

Linux/macOS: Use sudo for system-wide installation or pipx/venv for user-local Windows: Run terminal as Administrator if needed

Multiple Python Versions

Use virtual environments to isolate dependencies:

python -m venv mcp_env
source mcp_env/bin/activate  # Linux/macOS
.\mcp_env\Scripts\activate   # Windows

Advanced Topics

• •PATH Configuration: PATH_CONFIG.md
• •Virtual Environments: VENV_GUIDE.md
• •Offline Installation: OFFLINE_INSTALL.md

Scripts

Automated installation scripts are available in scripts/:

• •install_python.ps1 / install_python.sh - Python installation
• •install_node.ps1 / install_node.sh - Node.js installation
• •install_uv.ps1 / install_uv.sh - uv installation
• •verify_setup.ps1 / verify_setup.sh - Comprehensive verification

Execute scripts based on user's platform and permission level.

Integration with LibrAgent

LibrAgent MCP servers require:

• •Python 3.11+ for Python-based MCP servers
• •Node.js 18+ for TypeScript-based MCP servers
• •uv for fast Python dependency management

Check src-tauri/src/mcp/server_manager.rs for runtime detection logic.