agent orchestration

MCP servers standardize how AI clients safely use real tools on Linux, enforcing permissions, isolation, and observability. This guide covers MCP basics, transports (stdio vs network), and distro-specific steps to install, run as dedicated users, harden with systemd/firewalls, wire into clients, test, and apply patterns (log triage, safe shell, repo review, DB queries, CI), plus troubleshooting and security tips.