Your AI tools forget.
Fix that.
Deploy a personal semantic knowledge base in 10 minutes. Every AI tool you use gets persistent, searchable memory.
$29 one-time · lifetime updates · MIT license
claude> Remember that we chose Postgres over Mongo for the joins
Captured as observation — database, architecture
$ # Search by meaning, not keywords
claude> What did I decide about the database?
Found 1 thought (94.2% match):
"We chose Postgres over Mongo for the joins"
Features
Everything your AI brain needs
Four MCP tools, five capture channels, zero infrastructure to manage.
Semantic Search
Find thoughts by meaning, not keywords. "What did I decide about the database?" works even if you never used the word "database." Powered by pgvector with 1536-dimensional embeddings.
Auto-Metadata
Every thought is automatically tagged with topics, people, action items, dates, and type.
5 Capture Channels
MCP, Slack, browser bookmarklet, iOS Shortcut, or any webhook.
Cross-Tool Memory
Thoughts captured in ChatGPT are searchable from Claude Code. Captured from your phone via iOS Shortcut? Searchable in Cursor. Your memory is completely tool-agnostic.
Setup
Live in 10 minutes
No Docker, no local servers, no infrastructure to manage.
Deploy to Supabase
Create a free project, fill in 4 env vars, run ./setup.sh
Connect AI tools
One-line setup for Claude Code, Claude Desktop, ChatGPT, and Cursor
Everything remembers
Memory persists across sessions, tools, and devices. Forever.
Compatibility
Works with your tools
Any MCP-compatible AI client.
Cost
Runs for pennies
Package
What's included
FAQ
Questions
Do I need to know Supabase?
No. Create a project, copy two keys, run the script. Every step is documented.
Is my data private?
Yes. Everything runs in your own Supabase instance. The only external calls are to OpenRouter for embeddings (zero data retention policy).
What if Supabase pauses my project?
Free tier pauses after 1 week inactive. Regular captures keep it alive. Or upgrade to Pro ($25/month) for guaranteed uptime.
Can I customize it?
It's ~400 lines of TypeScript with MIT license. Add tools, change models, extend the schema — it's your code.
How is this related to Open Brain?
Brain Kit is built on the Open Brain architecture popularized by Nate Jones. It's the polished, deploy-ready version — genericized, documented, with capture channel recipes and client guides included. If you watched the video and want the "just works" version, this is it.
Stop losing your
best thinking.
Deploy once. Remember everything.
Get Brain Kit — $29One-time purchase · Lifetime updates · MIT license