Cross-instance ServiceNow integrations with AI tools can devolve into a tangle of point-to-point connectors — one per AI vendor, per target instance. The Model Context Protocol (MCP) collapses that sprawl into a single governed contract. You'll see exactly how to publish a ServiceNow capability as an MCP Tool on Zurich+, invoke it cross-instance from an AI Agent, and prove vendor neutrality — validated end-to-end on real ServiceNow instances.