
Sealed trading-card product prices and expected value across 10 TCGs, refreshed every 2 hours.
Worth the Rip API is a free Games & Comics API that requires no API key, is served over HTTPS and supports CORS, so it can be called from the browser.
JSON endpoints and an embeddable leaderboard widget: sealed prices, EV and margins across 10 TCGs, refreshed every 2 hours. No key required.
Details from worththerip.com.

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The Worth the Rip API is provided by Worth the Rip (worththerip.com). JSON endpoints and an embeddable leaderboard widget: sealed prices, EV and margins across 10 TCGs, refreshed every 2 hours. No key required.
Yes. The Worth the Rip API is listed in the Games & Comics category of the public-apis directory, which only includes APIs that are free or have a free tier. Check its documentation for rate limits and paid plans.
No. The Worth the Rip API requires no authentication, so you can start making requests without signing up.
Yes. The Worth the Rip API supports CORS, so front-end JavaScript can call it directly.
Yes. The Worth the Rip API is served over HTTPS, so it's safe to use in production.