Brain2Brief

Brain-dump a topic → answer a few clarifying questions → get a 1–10 slide deck.
For engineers who get pulled into "can you demo this real quick" with no time to design slides.

100% local. No backend. Bring your own LLM API key.

Quick start

git clone https://github.com/fityanos/Brain2Brief.git
cd Brain2Brief
npm install
npm run dev

Open http://localhost:5173. Click the gear icon → choose a provider → paste your API key → save. Or start with Mock mode (no key required) to try the flow.

Providers

Pick one in Settings:

Provider	Base URL	Notes
Mock	(none)	No key needed. Scripted Q&A + a deck built from your brain-dump text. Great for trying it out.
Anthropic	https://api.anthropic.com/v1	Use a key from console.anthropic.com. Default model: claude-sonnet-4-6.
OpenAI-compatible	any /v1/chat/completions endpoint	Works with OpenAI, OpenRouter, Ollama (http://localhost:11434/v1), LM Studio (http://localhost:1234/v1).

Optional: copy .env.example to .env.local to pre-fill the Settings panel.

Important ⚠️

Brain2Brief is designed around your ideas. It doesn't search the web for answers or generate generic content. The slides are built from your thoughts, perspectives, and notes. If you want to incorporate external information, you can explicitly provide a URL and Brain2Brief will fetch and use that content.

How your key is handled

• Stored only in your browser's localStorage. Never written to disk by this app, never sent anywhere except the LLM endpoint you configured.
• No backend. The browser calls the LLM provider directly.
• No telemetry, no analytics. Search the repo for fetch( — the only outbound calls are to your configured LLM endpoint and (for the print popup) Google Fonts.
• CSP enforced in production builds. See below.

Content Security Policy

The production build (npm run build) injects a strict CSP into index.html:

• script-src 'self' — no inline scripts, no eval, no third-party JS
• style-src 'self' 'unsafe-inline' https://fonts.googleapis.com — inline styles allowed for React's style={{...}} props
• font-src 'self' data: https://fonts.gstatic.com — Inter + JetBrains Mono only
• img-src 'self' data: — only same-origin and bundled assets
• connect-src — same-origin, any localhost (for Ollama / LM Studio), and the three known remote providers (api.anthropic.com, api.openai.com, openrouter.ai)
• form-action 'none' — the app never submits a form
• frame-ancestors 'none' — cannot be embedded in an iframe
• object-src 'none', base-uri 'self'

If you point Settings at a provider not in the connect-src list above, the browser will block the request. Edit the CSP constant in vite.config.ts to add the host, then rebuild.

The dev server (npm run dev) runs without CSP — Vite's HMR needs inline scripts. For a hardened local run, use:

npm run build
npm run preview

How it works

License

MIT — do whatever you like.