Felipe De Leon developed CLI plugin hooks for session lifecycle events in the NousResearch/hermes-agent repository, focusing on enabling plugins to respond to session creation, reset, and finalization. Using Python and leveraging event-driven architecture, Felipe implemented on_session_finalize and on_session_reset hooks, allowing automated cleanup, initialization, and state restoration at session boundaries. The work included comprehensive tests to verify hook registration, invocation order, and error handling, ensuring reliability and maintainability. By reducing manual boilerplate and laying the foundation for future plugin-driven features, Felipe’s contribution enhanced the extensibility of the CLI and improved the overall developer experience for plugin integration.