Juhus

Juhus (juhus.ee) is a real-money binary prediction market for Estonian and international users. People buy YES or NO shares on real-world questions at prices between 1 and 99 cents (the price is the implied probability) and receive €1 per share when their side resolves.

The goal is to make prediction markets legible to a mainstream audience without dumbing the mechanics down. A first-time user should be able to place a trade without ever opening an order book; an experienced trader should be able to amend a limit order without leaving the keyboard. It has to feel as trustworthy as a bank app unlike traditional sportsbooks, every cent that moves goes through an auditable ledger inside a single transaction.

How it uses AI:

• Multilingual content, automatically. Every market title, event, and category is machine-translated, backed by a translation-memory cache and an admin pin for terms the model gets wrong. The product is fully multilingual to cater to the European market.
• Autonomous market agents. External bots create and quote markets end-to-end through a creation-only, allowlisted ingress. The weather agent ingests hourly forecast distributions, derives calibrated thresholds from its own residual bias and error sigma, posts two-sided quotes with short TTLs, and withdraws before the observation window opens. These are statistical models, not generative ones, deliberately, because they hold real money.
• AI-assisted engineering. The codebase is built by a solo engineer using agentic coding
  tools.