New York (US) City Open Data.
City, New York Open Data API is a free Government API that requires no API key, is served over HTTPS and has unconfirmed CORS support.
Open Data is free public data published by New York City agencies and other partners. Explore the data, attend a class or sign up for the NYC Open Data mailing list.
Details from opendata.cityofnewyork.us.

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Lviv(UA) City Open Data
The City, New York Open Data API is provided by NYC Open Data (opendata.cityofnewyork.us). Open Data is free public data published by New York City agencies and other partners. Explore the data, attend a class or sign up for the NYC Open Data mailing list.
Yes. The City, New York Open Data API is listed in the Government 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 City, New York Open Data API requires no authentication, so you can start making requests without signing up.
CORS support for the City, New York Open Data API is unknown. Test a request from the browser, and fall back to a server-side call if it is blocked.
Yes. The City, New York Open Data API is served over HTTPS, so it's safe to use in production.