UML - Shared memory graph for Claude, ChatGPT, and agents via MCP

Show HN: Shared memory graph for Claude and ChatGPT, over MCP

UML (Universal Memory Layer) is a private, structured memory graph that allows users to tell an AI once and have Claude, ChatGPT, and custom agents remember it everywhere. Unlike simple chat history, UML extracts durable facts into a visual, editable graph where the backend verifies data before storage. Users can connect via MCP, API, or SDK to save context, set rules, and see a living timeline of their knowledge. With full data ownership, no ads, and receipts for every save, UML ensures your personal memory remains private, accurate, and universally accessible across all your tools.