Unified API for Sports Prediction Markets

This shows prediction markets are moving from one off political spectacles into a repeat use consumer product anchored by sports. Election trading brought attention, but NFL weekends keep money moving every few hours, which means traders can reuse the same bankroll across many games and platforms can hold onto users week after week instead of waiting for the next national vote.

• The demand shift is visible in market mix. Polymarket grew from $73M of volume in 2023 to about $9B in 2024 on the back of the U.S. election, but by late 2025 sports had become the main growth driver, with Kalshi doing $1.1B in monthly sports volume and Polymarket about $350M.
  1 sacra 2 sacra 3 sacra
• Sports works better as a liquidity engine than politics because contracts settle fast and the calendar never really stops. A presidential market can tie up capital for months. NFL, NBA, and MLB markets resolve in hours or days, so the same dollars can be traded again and again across a season.
  1 sacra 2 sacra
• That is exactly why an aggregation layer matters. As volume spreads from a few huge election markets into thousands of sports and niche event markets across Kalshi, Polymarket, and newer venues, developers need one API for prices, order books, and execution instead of stitching together separate exchange integrations.
  4 sacra 5 sacra

The next phase is a market structure story, not a novelty story. If sports remains the daily habit that keeps prediction market volume above election peaks, the winners will be the exchanges and data layers that become default plumbing for brokers, media apps, sportsbooks, and trading products built on top of event contracts.