📈 Prediction Market Intelligence — Architecture

Prediction market aggregator and tracker. SvelteKit + Deno + Supabase + market APIs.

🛠️ Tech Stack

Component	Technology	Why
Frontend	SvelteKit	Dashboard, forecast charts, alert management
Backend	Deno 2	Market data aggregation, alert engine, weekly digest
Database	Supabase (PostgreSQL)	Users, tracked questions, alert configs, forecast history
Scheduling	QStash	Hourly market data refresh, weekly digest delivery
Notifications	Telegram Bot + Resend	Alert delivery
Charts	Chart.js or Recharts	Forecast trend visualization

Metaculus API

Public API for questions, probabilities, historical data. Rate limited to ~60 req/min. Cache aggressively.

Polymarket API (CLOB)

GraphQL API for markets, prices, volume. CLOB data is real-time. Requires auth for some endpoints.

Kalshi API

Official API for Kalshi markets. Need API key. Covers economic/experimental markets.

Historical Tracking

Hourly snapshots of probabilities stored. Allows trend charts. Data grows ~720 rows/question/month — acceptable for tracked questions.

tracked_questions
id	uuid
user_id	uuid (FK)
market	enum	metaculus, polymarket, kalshi
external_id	varchar(255)	Platform's question ID
question_text	varchar(500)