tinefold
Try the live demo → (demo mode, no key needed)
An AI brainstorming tool for software problems. You describe a problem; the AI proposes approaches; you choose
one; it breaks your choice into sub-problems; you keep choosing until everything is decided. Then it writes the
result up as the document you need: solution design, PRD, TRD, decision records or a one-page brief. Brainstorms
that belong together can be combined in a project for one high-level structure and documents written across all
of them.
Two kinds of card, so the tree reads at a glance: green, square-cornered cards are problems (solve all of
them), white, rounded cards are options (pick one). Blue is reserved for what you chose.
Why
AI chats are good at producing a plan, but they make every decision for you in one go, and a change of mind
means starting over. tinefold keeps you choosing at each step, remembers why each option was rejected,
marks decisions that may be out of date when the context changes, and only writes documents from what you
actually decided.
- No backend. It runs entirely in the browser. Brainstorms live in IndexedDB, and model calls go directly from
your browser to the provider you choose (Anthropic or any OpenAI-compatible endpoint) with your own key.
- Event-sourced. Every brainstorm is an append-only event log, so history, export/import and "earlier
versions of the problem" come for free.
- Demo mode. Without a key, a mock provider gives placeholder answers, so you can explore the whole flow.
- Built for a big screen. Deciding happens in the tree, on a desktop or tablet; focus mode strips away
everything else. Phones get a read-only companion: progress and comments, never the tree.
Repository layout
Run it locally
Requires Node 20+.
git clone https://github.com/ravingupta/tinefold && cd tinefold
cd tinefold-web && npm install && npm run dev # http://localhost:5173, engine from npm
cd ../tinefold-engine && npm install && npm test # only if you work on the engine
It starts in demo mode. Open Settings, pick a provider and paste a key for real answers. Keys are stored in
your browser's localStorage and sent only to that provider.
Deploying your own copy: npm run build in tinefold-web/, then host dist/ on any static host. Paths are
relative, so a subfolder works.
Contributing
Issues and pull requests are welcome! Start with CONTRIBUTING.md. Please follow the
Code of Conduct, and report security issues privately as described in
SECURITY.md.
License
MIT © Ravin Gupta
