{"slug": "show-hn-shared-memory-graph-for-claude-and-chatgpt-over-mcp", "title": "Show HN: Shared memory graph for Claude and ChatGPT, over MCP", "summary": "UML, a shared memory graph for AI assistants such as Claude and ChatGPT, launched with free early access, allowing users to store structured memories via MCP or API. The open-source (Apache 2.0) engine verifies AI-extracted facts and provides a visual dashboard with timelines and receipts, with founding users receiving free Pro tier when paid plans launch.", "body_md": "UML is one private memory graph shared by Claude, your agents, and your apps — you can see it, edit it, and own it.\n\nTell your AI: *\"save this to uml — I finished Unit 3.\"* Or let your app send it automatically.\n\nAI extracts the durable facts. The backend verifies them and writes real structure — never a raw chat dump.\n\nOpen the dashboard: a living graph, timelines, organized pages — and a receipt for every single save.\n\nClaude, Cursor, your own agent — all connect to the same private memory. Save once, recall everywhere.\n\nSign up, create your private memory link in the Connect tab, then paste it into any MCP-capable client — or call the API from your own app.\n\nWhen UML is connected through an MCP-capable AI client, UML provides memory tools. The client or host model decides when to call them. If you need guaranteed per-turn capture or recall, use the UML API or SDK inside your app or agent runtime.\n\nUML turns useful context from chats, events, documents, tools, and workflows into structured memory objects — entities, facts, events, relationships, pages, and receipts.\n\nMessages are source material. UML keeps the durable meaning that should survive beyond a single exchange.\n\nUML stores verified entities, facts, events, relationships, rollups, and receipts so systems can reason over them later.\n\nThe LLM proposes; UML verifies; UML writes. Recall and extraction stay separate.\n\nNew evidence can create, update, promote, invalidate, or supersede memory. UML is not an append-only chat log.\n\nYour facts live in a visual graph with clusters you can open, search, drag, and edit — not a hidden blob.\n\nSay \"actually, that changed\" — the old fact is superseded and kept as visible history on a timeline, not deleted, not duplicated.\n\nEach write returns proof: what was saved, updated, or refused — with source and timestamp. No silent writes, ever.\n\nDecide what gets collected and what must never be saved — plain-language rules the backend actually enforces.\n\nUML can ingest useful context from tools, apps, agents, docs, events, workflows, and custom schemas.\n\nNo ads. No trackers. No selling data. No training on your memory. Export everything as JSON or delete it all — any time, one click.\n\nUML does not sell user data or use user memory for unrelated purposes. User memory belongs to the account that created it. Connected tools are third-party services and access UML only through private links or tokens you create.\n\nUML is an early product and may change. Use it responsibly. You are responsible for tokens and private links, and you can revoke them from Connect. Avoid sensitive or regulated data unless UML is appropriate for that use.\n\nFree early access — founding users keep the Pro tier free when paid plans launch.\n\nNeed help connecting UML or shaping an integration?\n\nUML's engine is open source under Apache 2.0 — read the code, open issues, or star the repo on [GitHub](https://github.com/12ziyad/universal-memory-engine).", "url": "https://wpnews.pro/news/show-hn-shared-memory-graph-for-claude-and-chatgpt-over-mcp", "canonical_source": "https://uml.gpmai.workers.dev", "published_at": "2026-07-31 15:58:01+00:00", "updated_at": "2026-07-31 16:38:34.699402+00:00", "lang": "en", "topics": ["ai-tools", "ai-infrastructure", "ai-products", "ai-agents"], "entities": ["UML", "Claude", "ChatGPT", "Cursor", "GitHub"], "alternates": {"html": "https://wpnews.pro/news/show-hn-shared-memory-graph-for-claude-and-chatgpt-over-mcp", "markdown": "https://wpnews.pro/news/show-hn-shared-memory-graph-for-claude-and-chatgpt-over-mcp.md", "text": "https://wpnews.pro/news/show-hn-shared-memory-graph-for-claude-and-chatgpt-over-mcp.txt", "jsonld": "https://wpnews.pro/news/show-hn-shared-memory-graph-for-claude-and-chatgpt-over-mcp.jsonld"}}