Build your
Open Brain.
Your knowledge should not live inside chat windows.
Sentiuma turns your markdown notes into a system every AI can query. Claude. ChatGPT. Cursor. Any model. One brain.
No product to buy yet. Be first to know when it's ready.
The problem
Every AI you use
builds its own memory.
Claude remembers what you told Claude. ChatGPT remembers what you told ChatGPT. Those memories never connect. Over time, your knowledge spreads across models and none of them know the whole picture.
You repeat yourself
Every new tool, every new session — you re-explain projects, people, and past decisions. The real bottleneck in AI workflows is not prompts. It is memory.
Context resets constantly
Every chat window starts from zero. Ideas you already explored get re-asked. Nothing compounds. Each session is an island.
Your notes sit idle
You already have the knowledge. It lives in markdown files, in iCloud, in Obsidian. AI tools just cannot reach it.
Switching has a cost
Moving from Claude to ChatGPT to Cursor means losing context each time. The best model for the job should not require starting over.
The shift
Move memory
outside the models.
Instead of every AI building its own memory of you, create a brain they all read from. Your knowledge becomes infrastructure.
Before
- Claude has its memory
- ChatGPT has its memory
- Cursor has its memory
- They never connect
- You repeat yourself
With Sentiuma
- One brain, every AI
- Write once, query anywhere
- Knowledge compounds
- Switch models freely
- Your data stays yours
How it works
Simple infrastructure.
Serious leverage.
Write notes normally
Use Ulysses, Obsidian, VS Code — any markdown editor you already use. Your files remain the source of truth. Nothing changes about how you write.
audio digest format for Speasy.
The indexer watches your folder
A lightweight macOS app monitors your iCloud markdown folder. When a file changes, it hashes the content, detects what is new, and sends updates automatically. Set and forget.
Notes become structured knowledge
The backend parses your content — chunking documents, generating embeddings, and extracting entities like people, projects, and ideas. Your notes become machine-readable without any extra work from you.
Every AI can query your brain
AI tools connect through an MCP server. They can search your notes by meaning, retrieve relevant documents, and explore relationships. Claude, ChatGPT, Cursor — they all read the same brain.
Who it's for
Built for people who
work with ideas over time.
Sentiuma is not a note-taking app. It is the layer that makes your existing notes useful to AI. If you already keep knowledge in markdown and want AI to reason with it — this is for you.
Early access
One brain.
Every AI.
Sentiuma is in development. Leave your email to be first to know when it's ready. No noise. No spam. Just a note when the time comes.
No product to buy yet. Be first to know when it's ready.