Nexsus - Give your AI a memory that outlives the chat

Hey Product Hunt 👋 I built Nexsus to kill a problem every AI power-user knows: the growing pile of .md files. You end up keeping scratch notes, context docs, and copy-pasted history that you re-paste into every new chat, just so your assistant remembers who you are and what you're working on. That's not memory — it's a filing cabinet you have to carry yourself. Nexsus is institutional memory for your AI. Connect it to Claude, ChatGPT, or Gemini over MCP and your assistant gets a private, structured workspace it reads and writes to itself. It creates its own data models, stores and updates records (with full version history — nothing's ever silently lost), links related things, and recalls anything later by meaning — not a keyword search through a folder. Ask it "what did we agree with that client in March?" in a fresh conversation months later, and it just knows. Why I call it a substrate, not a feature: most AI memory today is a thin layer on top of the chat window — gone the moment you switch tools or start a new session. Nexsus sits underneath, like a database sits under an app. It becomes part of what your assistant is, for your work, permanently. A few things I care about: • One-minute setup — OAuth sign-in, no API keys to paste • You watch it build its own structure live, in plain conversation — no schema, no code • Your data is yours — isolated workspace, export any time, never used to train models • Free to start — no card, no time limit It works with Claude and ChatGPT today (Gemini too). Would genuinely love your feedback, feature requests, and hard questions — I'm here all day. 🙏 — Kasun