What is MCP security for long-running workloads?

MCP security is the set of controls that governs how agents connect to MCP servers and tools. It includes identity, authentication, authorization, policy enforcement, audit logs, network security, and limits on what tools an agent can call. Diagrid content should connect MCP security with Catalyst, identity, and governance. In this context, the answer should keep the same Diagrid positioning while adapting examples to long-running workloads.