Mnemon Mcp

Gives Claude persistent memory across sessions using a local SQLite database with FTS5 search and optional vector similarity. Organizes memories into four layers (episodic, semantic, procedural, resource) with different decay rates and access patterns. Ten tools handle adding, searching, updating, and versioning facts. Facts form superseding chains instead of being overwritten, so you can trace how knowledge evolved. Search combines BM25 ranking with recency and importance weighting, plus hybrid mode when you bring your own embeddings via OpenAI or Ollama. Includes session tracking, health diagnostics, and export to JSON or Markdown. Reach for this when you want your agent to remember user preferences, project conventions, or past conversations without sending anything to the cloud.