Unified prediction market API for Polymarket, Kalshi and 14 more venues. Normalized prices, order books, cross-venue arbitrage and WebSockets. Free tier.
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Hey Product Hunt - Taf here, one of the founders of Predictefy 👋
We started Predictefy because building across prediction markets was way harder than it needed to be.
Every venue had a different API, schema, authentication flow and data structure. So we started building the infrastructure we wished existed ourselves.
We’ve stayed bootstrapped in one of the fastest-growing and increasingly competitive markets, kept the team lean, and focused heavily on shipping what developers actually asked for.
The support since launching our beta has been incredible.
In a short period of time, Predictefy has grown to 10,000+ users, processed millions of API calls, and our data has been cited by leading names including Business Insider, Polymarket, Messari and others.
Today, we’re launching what we believe is the most complete prediction market API.
One API, SDK and WebSocket layer for normalized market data, order books, historical data, cross-venue intelligence and execution across 16+ prediction markets.
We’re still early, and a huge part of getting here has come from listening closely to our users.
So I’d genuinely love your feedback:
What would you build with Predictefy?
And more importantly, what are we still missing?
Taf
Co-founder, Predictefy
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