Gavio: open-source interceptor pipeline for production LLM applications

Gavio is an open-source interceptor pipeline designed for production LLM applications, enabling developers to easily inject custom logic (like logging, guardrails, or caching) into the request-response flow without modifying the core application. It targets engineers building and deploying LLM-based services who need a modular, pluggable way to add observability, safety, and performance controls. Its interest lies in providing a standardized, open-source alternative to proprietary middleware, simplifying the management of complex LLM workflows in production environments.