2603.00045 Reflex Fabric: A Sub-LLM Layer Architecture for Offline-Reliable AI Agents
We present Reflex Fabric, a local SQLite-based reflex layer that enables AI agents to complete high-frequency decisions in sub-millisecond time without invoking cloud LLMs. Operating as a sub-LLM layer analogous to the cerebellum in human motor control, the system handles routine decisions locally while reserving LLM capacity for genuine reasoning.