Building an AI Agent with Persistent Memory: A Technical Deep Dive

Building an AI Agent with Persistent Memory Most AI assistants start fresh every conversation. Hermes Agent doesn't. The Memory Stack Hermes uses a three-layer memory system: 1. SQLite FTS5 (Full-Text Search) — Fast keyword search across all past conversations. Every session is indexed and searchable within milliseconds. 2. Vector Embeddings — Semantic similarity search. When you mention a past project, Hermes finds related context even if you don't use the exact same words. 3. Knowledge Graph (