
Puyo Puyo information from Puyo Nexus Wiki.
Puyo Nexus 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.
Puyo Nexus (unofficial) database scraper API.
Details from github.com.

Unified API suite · now live
Geocode an address, validate an email, track a flight or pull stock data with one account, one dashboard and one API key.
Provides detailed character and guild rankings for Raiding and Mythic+ content in World of Warcraft
The Puyo Nexus API is provided by deltadex7 (github.com). Puyo Nexus (unofficial) database scraper API.
Yes. The Puyo Nexus 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 Puyo Nexus API requires no authentication, so you can start making requests without signing up.
Yes. The Puyo Nexus API supports CORS, so front-end JavaScript can call it directly.
Yes. The Puyo Nexus API is served over HTTPS, so it's safe to use in production.