Never copy-paste your tech stack again. Never re-explain last week's decisions. Second Brain gives Claude, ChatGPT, and Cursor permanent memory that works across every session, every device.
Every new conversation, you re-paste context. Your tech stack. Your architecture decisions. What you agreed on last Thursday. The file structure. The naming conventions. Again. And again. And again.
The AI is brilliant in the moment and completely blank at the start of the next session. You're burning 10 minutes per conversation just re-establishing context that should already exist.
Built-in memory features are black boxes. You can't search them. Can't audit what's stored. Can't export them. Can't control when they trigger. They occasionally remember something useful—mostly they don't.
Second Brain is different. It's a memory layer you actually control.
Click the deploy button. Cloudflare automatically provisions your D1 database, Vectorize index, and Worker. Schema auto-creates on first request. Zero manual configuration.
Add your Worker URL to Claude Desktop, Claude Code, claude.ai, Cursor, or any MCP-compatible client. One URL connects every tool.
Your AI stores context automatically during conversations. At the start of every new session, it recalls what's relevant. You stop re-explaining. Forever.
Recent memories automatically rank higher. When you update a decision or change direction, the latest version surfaces first—not outdated context.
Browse, search, and manage your memories from a clean UI at your Worker URL. No API knowledge or command-line required.
Official verified plugin syncs your Obsidian vault directly. Your entire personal knowledge base becomes AI-readable context.
Finds memories by meaning, not exact keywords. "Users drop off at checkout" surfaces when you search "conversion problems."
Everything lives in your own Cloudflare account. No third party ever touches your memories. Export anytime.
Claude Desktop, Claude Code, claude.ai, Cursor, Windsurf—any MCP-compatible client. One memory layer, every tool.
Long notes split into overlapping segments. Each section gets its own vector so specific parts surface precisely.
Near-exact matches blocked before storing. Your memory stays clean without accumulating repeated context.
Capture thoughts the moment they happen. Voice memo while walking, quick text note, or save from any app's share sheet—all go straight to your AI's memory.
YOUR_WORKER_URL and YOUR_TOKEN with your values
Turn your entire Obsidian vault into AI context. Sync all notes or just tagged ones, auto-sync on save, search from the sidebar. Your personal knowledge base becomes Claude's memory.
"This is one of the easiest ways to deploy a separate shared vectorized memory layer. It took me Uber two minutes to setup. One click deploy to cloudflare > database schema > add auth token."
— Impressive-Sir9633, r/Cloudflare"Damn, I appreciate how no fluff this is. I'd hop on the discord and pitch it to the CF docs folks for the examples section for Workers AI or something. Exactly the sort of thing they like to highlight as an example of the promise of the platform."
— tumes, r/Cloudflare"The 85-95 flagged tier is the clever bit. Most setups just hard dedupe at one threshold and lose the partial overlaps that actually carry new context. Curious how often the append path beats a fresh write in practice."
— NeedleworkerSmart486, r/Cloudflare"This is awesome. I've been building on cloudflare and was thinking something similar Claude-mem but in the cloud. Excited to check it out."
— bpGodspeed, r/Cloudflare"Love the included iOS shortcuts + bookmarklet. I've built so many of those for personal purposes (in the past connecting them to an Airtable). This brings it to another level, I'll try it out."
— GludiusMaximus, r/Cloudflare"This is a clever setup, especially running entirely on the free tier. I'm thinking about how memory is the new moat for agents."
— nicoloboschi, r/Cloudflare"This is one of those boring-in-a-good-way infrastructure ideas. Built-in memory tends to feel magical until it remembers the wrong thing confidently. Having explicit control over what gets stored is the less shiny, much saner version."
— rupert_at_work, r/SideProjectNo credit card required for personal use.
Deploy your Second Brain in 3 minutes. Free forever, open source, self-hosted. Your memories stay in your own Cloudflare account—no credit card required.