Agent Middleware in Microsoft Agent Framework 1.0

A familiar pipeline pattern applied to AI agents Covers all three middleware types, registration scopes, termination, result override, and when to use each Not a New Idea If you have used ASP.NET Core or Express.js, you already understand the core concept. Both frameworks let you register a chain of functions around every request. Each function receives a context and a next() delegate. Calling next() continues the chain. Not calling it short circuits it. That is the pipeline pattern a clean way to apply cross cutting concerns like logging, authentication, and error handling without touching any business logic. Microsoft’s Agent Framework applies this exact pattern to AI agents. The next() delegate becomes call_next(), the context object holds the agent’s conversation instead of an HTTP request, and the pipeline wraps an AI reasoning turn instead of a web request. If you know app.Use() or app.use(), you already know the shape of what follows. What is new, and worth understanding deeply,