Most AI Agent Memory Systems Are Broken, Here's Why

Most AI Agent Memory Systems Are Broken, Here’s Why A concise tour of Hermes Agent memory - MEMORY.md, USER.md, prefetch/sync, and when session search is not memory. You’ve probably experienced it: an AI agent that feels brilliant for 20 minutes, then completely forgets everything the moment you close the tab. You come back the next day and it’s like talking to a stranger. The industry’s response has been to build bigger and bigger memory systems - vector databases, knowledge graphs, retrieval pipelines. The problem isn’t that memory systems are too small.