Sports prediction markets across Polymarket and Kalshi in...
Sports prediction markets across Polymarket and Kalshi in one call — game lines, futures, and props (NFL/NBA/MLB/NHL/soccer/tennis/etc). Optionally narrow with league (a tag/category keyword, e.g. nfl, soccer, world-cup) and cap with limit. Each hit is tagged with its venue and returns the question, live YES/NO price (implied probability), USD volume, close date, and the venue URL. Read-only, keyless.
Request
- Base URL: https://2s.io
- URL: https://2s.io/api/predict/sports
- Auth: API key in header PAYMENT-SIGNATURE
Query parameters
League/category keyword (e.g. nfl, nba, soccer, world-cup).
Max results per venue (default 20).
Try before you buy. Set to 1 for one free real call per endpoint per hour — no wallet or payment needed — to verify the endpoint before paying. Equivalent to sending the "X-2s-Trial: 1" request header. Listed only on operations that offer a trial; the others always answer 402.
Response
Changes
No recorded changes to this operation across all 1 revision of this API.