> ## Documentation Index > Fetch the complete documentation index at: https://praison.ai/docs/llms.txt > Use this file to discover all available pages before exploring further. # Middleware Registry • AI Agent SDK > Middleware Registry for managing runtime-scoped tool result middleware. # middleware\_registry AI Agent Middleware Registry for managing runtime-scoped tool result middleware. Provides a global registry where plugin harnesses can register their middleware implementations and the core tool execution system can look up the appropriate middleware for a given runtime. ## Import ```python theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}} from praisonaiagents.runtime import middleware_registry ``` ## Classes Registry for runtime-scoped tool result middleware. ## Functions Get the global default middleware registry. Register middleware in the global registry. Get middleware from the global registry. *** ## Related Documentation