Launching today
Second Brain for AI
Persistent memory for Claude, ChatGPT & Cursor. Free.
263 followers
Persistent memory for Claude, ChatGPT & Cursor. Free.
263 followers
Every AI conversation starts from zero. Your projects, decisions, and preferences disappear as soon as you close the chat. Second Brain fixes that. It is a self-hosted memory layer that works with Claude, ChatGPT, Cursor, and any MCP client. You can store context once and recall it by meaning instead of keywords. It includes duplicate detection, semantic search, and a web UI. Built on Cloudflare, it offers a free tier and your data remains yours. MIT licensed.
Clipboard Canvas v2.0
How does duplicate detection handle near-duplicates or nuanced variations in context? I've found that tricky in my own memory tools.
Second Brain for AI
Nice one @rahilpirani !
This can be run on-prem too?
Second Brain for AI
The product is good and very needed for those who want very personalised chats.
But even claude has a good context window not that big but decent
Second Brain for AI
@rahilpirani I might be wrong
Even ChatGPT has personalization
Second Brain for AI
@jay_gangwar It does, but only within ChatGPT. The moment you switch to Claude or Cursor, that memory is gone. Second Brain is the layer that works across all of them… one memory, every tool.
@rahilpirani yeah that is true.
Great solution. 😁👍
Second Brain for AI
Hey Product Hunt, I'm Rahil. I built Second Brain.
I got tired of explaining myself to every AI tool during each session. A new Claude window is a blank slate. A new Cursor project doesn’t know my stack. It adds up quickly.
Second Brain is a self-hosted memory layer that connects to Claude, ChatGPT, Cursor, and any MCP client. You store context once and recall it by meaning across any session. Everything lives in your own Cloudflare account, not on a third-party server. There's a free tier, and you don't need a subscription. You also get a web UI to browse and manage everything visually.
What makes it different:
It works with all your AI tools—not tied to one app.
It uses semantic recall, which finds memories by meaning instead of exact keywords.
It’s self-hosted, so your data stays in your own Cloudflare account.
There’s a free tier, so it costs nothing to run.
The web interface lets you browse, search, and manage memories visually.
II’m really curious: what context do you find yourself re-entering most? That has influenced my roadmap more than anything else.
Ask me anything. Big shout out to @fmerian for his support!
Does it work seamlessly with ChatGPT and Claude together?
Second Brain for AI
@nithin_raju1 Yes! Claude and ChatGPT both connect via MCP and pull from the same Second Brain memory layer. Store something in Claude, recall it in ChatGPT. Same context, same session history, across both.
That's actually one of the core reasons I built it... your memory shouldn't be locked to one tool.
Second Brain for AI
Quick update since launch. Here are a few things worth noting:
We shipped the Second Brain CLI today. If you use the terminal, you can now capture and recall memories without leaving it.
For those asking about integrations, Second Brain works with Claude, ChatGPT, Cursor, Windsurf, and any MCP-compatible client. There’s also an Obsidian plugin in the community directory, a Chrome extension, iOS Shortcuts in the repo, and a web UI if you prefer managing everything visually.
CLI, Obsidian, Chrome extension, iOS Shortcuts, MCP… same memory, every interface.
AISA AI Skills Test
the memory problem is so underrated in AI tooling right now. you spend 20 minutes setting up context in a conversation and then it just... vanishes. self-hosted is the right call too, especially for teams dealing with proprietary code. how does it handle conflicting memories across different tools?