A zero-friction estimation game for testing calibration.

Live at calibrated.live

How It Works

1. Create a question - Ask something with a numeric answer (e.g., "How many bones in the human body?")
2. Set the answer - Enter the true value
3. Set the range - Define min and max bounds for guesses
4. Share the link - Send it to friends
5. Collect guesses - Others click on the number line to guess
6. Reveal the answer - See how everyone did (optionally protect reveal with a PIN)

Discord Bot

Add to your server

Uses the /calibrate slash command.

Tech Stack

• Next.js 16 (App Router)
• Supabase (Postgres)
• Tailwind CSS + shadcn/ui
• Vercel

Local Development

Quick Start (using production Supabase)

pnpm install
cp .env.example .env.local  # Add your Supabase credentials
pnpm dev

Full Local Setup (with local Supabase)

1. Install Supabase CLI

2. Start local Supabase:

   supabase start

   This spins up a local Postgres database, Auth, and API. Note the anon key and API URL from the output.

3. Configure environment:

   cp .env.local.supabase-local .env.local

   Or manually set:

   NEXT_PUBLIC_SUPABASE_URL=http://127.0.0.1:54321
   NEXT_PUBLIC_SUPABASE_ANON_KEY=<anon key from supabase start>
   

4. Run migrations:

   supabase db reset

5. Start the dev server:

   pnpm dev

Useful Commands

pnpm dev              # Start dev server
pnpm build            # Build for production
supabase start        # Start local Supabase
supabase stop         # Stop local Supabase
supabase db reset     # Reset DB and run all migrations
supabase migration new <name>  # Create new migration

See CLAUDE.md for detailed project context and patterns.