think2 is a small web app for stress-tested recommendations: you describe your situation once; two AI models plan and challenge; a third resolves the exchange into a clear verdict, next steps, and risks.

The exchange streams step by step. At the end you get a structured answer (verdict, actions, risks).

1. Open the live app (/ or index.html) or the demo (/demo.html) for a scripted walkthrough (one sample situation, no OpenRouter calls). The header on each page links to the other.
2. Paste your OpenRouter API key. It is only used in your browser to call OpenRouter. It is not saved and disappears when you reload the page.
3. Choose Planner, Challenger, and Resolver models (defaults are sensible; your choices are remembered in the browser).
4. Write your situation — what is going on, what you have tried, what you want decided. Use Next sample or Clear if you want quick examples or a blank field.
5. Click Get my recommendation and read how we got there as it streams.

New session clears the run and your situation text; your key field is not stored anyway.

• For the live app: an OpenRouter account and API key (OpenRouter docs).
• For the demo: nothing except a modern browser (no key, no network to OpenRouter).
• A browser with JavaScript enabled.

There is no backend — the shipped site is static HTML, CSS, and bundled JavaScript. Source lives in TypeScript under src/ and is built with Vite.

• Build: Vite 6, TypeScript (strict), multi-page entries index.html and demo.html.
• Source: src/lib/shared.ts (UI helpers), src/lib/app.ts (OpenRouter), src/lib/demo.ts (offline demo); shared styles css/styles.css.
• API: The live app uses direct fetch to OpenRouter (/api/v1/chat/completions with streaming, and /api/v1/models to validate model IDs). The demo page does not call OpenRouter.
• Themes: Respects light / dark using your system preference (prefers-color-scheme).

• Your API key and situation text stay in the page session. Nothing is sent to a think2 server — there isn’t one.
• Only OpenRouter receives the key and the prompts you send when you run a session from the live app.
• The demo does not send your situation or any key to OpenRouter (canned text only, in the browser).

Source and issues: github.com/bertdida/think2

The same link appears in the site header on think2.xyz.

npm install
npm run dev      # Vite dev server (http://localhost:5173)
npm run build    # Typecheck + production bundle to dist/
npm run preview  # Serve dist/ locally
npm test         # Vitest
npm run lint     # ESLint
npm run format   # Prettier

1. In the repo on GitHub: Settings → Pages → Build and deployment → Source: GitHub Actions.
2. Pushes to main run .github/workflows/pages.yml: npm ci, npm run build, then upload dist/ to Pages.

The site uses the apex domain think2.xyz; Vite base is /.

• App name: think2 (lowercase in the UI).
• Domain: think2.xyz — used in OpenRouter attribution headers when calling the API.