Here's every step stoa runs for you, start to finish.
Everything that makes a “second brain” a chore — cleaning, tagging, linking, keeping it current — stoa does automatically. Nothing is saved until you approve it.
A PDF, a messy transcript, a forwarded email, a web link. stoa reads it, strips the boilerplate, and figures out what it actually says.
No tagging, no folders, no templates. stoa infers the document's type, cleans it into readable text, and writes its own summary — the work you'd normally do by hand, done for you.
Headers, footers, page numbers, email quoting, navigation cruft — the boilerplate that pollutes retrieval is removed first, leaving clean, readable text.
You get back a tidy markdown version of every source, so the reading surface is yours too — not just an index you can never look at.
People, projects, decisions, dates — the discrete facts inside the prose, pulled out and made queryable.
Instead of storing a wall of text, stoa extracts the individual claims and the entities they're about — so you can ask precise questions and get precise, sourced answers back.
stoa does the synthesis you'd otherwise do by hand: it recognizes “Bob” and “Robert” are one person, retires outdated facts (with history), and cross-links everything — once, then keeps it current. That maintained depth, not just search, is the product.
This is the hard part everyone else skips. stoa recognizes when two sources mean the same thing, merges them, and when a new claim clashes with a settled one, it flags the disagreement rather than silently stacking both.
Entities link to entities. Pages rewrite themselves as you add more. The picture stays current without you curating it.
Every source you add updates the graph and the cited wiki pages built on top of it. Nothing goes stale in a drawer — the whole picture re-coheres each time you feed it something new.
stoa does not replace the AI assistants, clients, and front-ends you already work in. It's the knowledge layer underneath them — reachable in whichever place you already do your best work: your terminal, your AI chatbot, your editor, all over MCP.
Browser sign-in for connector clients (opt-in on your instance).
Curious how a question becomes a cited answer? Step through it at your own pace — each move explained in plain language, no algorithm background needed.
Every source you add re-coheres the graph and the wiki pages built on top of it — linked, cited, and current, with nothing to curate. It's a folder of plain files you own: open it, move it, or delete it, no lock-in.
The wiki pages are stored in the — an open standard for knowledge that AI agents can read directly, so your whole brain can be used as-is by other tools, with no custom integration.
The logic your computer runs on — invented 2,000 years early. Propositional logic treats whole statements as single true/false values joined by operators like "if… then", "and", "or".
This is exactly how a computer thinks: every if/else a program runs is propositional logic in action. It became Boolean algebra and the switching circuits inside every chip.
The Stoics — systematized by (3rd c. BCE), over two millennia before the transistor. (Aristotle founded the other branch, term logic.)
Free, open source, and running on your machine in one command.