AzureAICommunity.Agent.Middleware.PIIChatDetectionMiddleware

A plug-and-play security middleware for Microsoft.Extensions.AI chat pipelines. Detects personally identifiable information (PII) — emails, phone numbers, IP addresses, credit cards, dates and more — in every outgoing user message, then enforces a configurable policy: Allow (pass through), Mask (replace with tokens), or Block (reject the request before it reaches the LLM).