Prediction market legality tracker for traders

What to build

A state-by-state legality tracker web app for prediction markets (Kalshi, Polymarket, Robinhood Predictions) that shows retail traders whether their state currently treats these platforms as legal, contested, or banned, pulling from cease-and-desist orders, state gaming commission rulings, and CFTC statements.

Utah's charges against Kalshi add another state to a growing, confusing patchwork of conflicting state-vs-federal rulings on prediction markets, creating a clear niche for a single source of truth retail traders can check before depositing money in a given state.

Demand

Active prediction market traders and the platforms' own support/community channels need a fast answer to 'is this legal where I live right now' as enforcement actions multiply state by state; the Utah news itself drew strong engagement, showing people are actively following this story.

• Hacker News / The VergeEngagement

  Utah charges Kalshi and its CEO with illegally promoting online gambling — 75 points, 16 comments on Hacker News, indicating high engagement with this specific regulatory conflict.

• Prior state cease-and-desist patternContext

  Nevada, New Jersey, Montana, Arizona, and Ohio have each separately issued cease-and-desist orders or warnings against Kalshi before Utah's charges, showing a recurring multi-state enforcement pattern that traders have had to track one news cycle at a time.

• CFTC federal oversight frameworkContext

  Kalshi's CFTC-regulated status directly conflicts with state gambling classifications, meaning the legal answer differs by state and changes over time rather than being settled nationally.

Stack

• Next.js
• Supabase
• Vercel
• Resend (email alerts)
• Stripe (alert subscriptions)
• RSS/news monitoring (Google Alerts or NewsAPI) for new state actions

Solo + AI difficulty

The app itself (state map UI, status database, email alerts, subscription paywall) is straightforward and very AI-codeable, buildable in about a week; the hard, ongoing part is manually researching and verifying each state's legal status since there's no API for this and getting it wrong is a real liability, especially given affiliate links to the same contested platforms.

Entry threshold

Low barrier: scraping state AG and gaming commission announcements plus a simple lookup database and alert system is buildable solo with AI in one to two weeks; main challenge is sustaining content accuracy as the legal patchwork keeps shifting.

Window

3-6 months

Where to find first users

• Prediction market communities on Reddit and Discord (Kalshi/Polymarket trader groups)
• Twitter/X accounts following prediction market regulatory news
• Indie hacker / Product Hunt launch
• Direct outreach to prediction market newsletters and podcasts covering the space

Competitors

• Legal Sports Report
• Action Network

Counter-signals & risks

• Kalshi may successfully argue federal preemption under CFTC authority, which could render state-by-state enforcement actions legally moot and reduce the long-term value of a state tracker product.

• The regulatory landscape could consolidate quickly via federal court rulings or legislation, shrinking the addressable 'patchwork confusion' problem the tracker is built to solve.

• Monetizing via affiliate links to 'compliant platforms' is legally sensitive given the same ambiguous regulatory status, risking the tracker itself becoming a target of scrutiny for facilitating access to contested platforms.