Four Layers, Zero Hallucination: How Claude Code's Memory Actually Works

Claude Code's memory combines manual rules, automatic note-taking, and periodic consolidation across four layers—simple by design rather than sophisticated by nature. This approach prevents AI hallucinations not by eliminating them, but by keeping all memory local, verifiable, and bounded to prevent unreliable information from being acted upon. For developers building reliable AI agents, this reveals that practical constraints and verification mechanisms often outperform elaborate frameworks.