University of Oslo
Courses, lecture videos, detailed information for courses etc. for the University of Oslo (Norway)

More than 1.5 million barcode numbers from all around the world.
UPC database API is a free Open Data API that requires apiKey authentication, is served over HTTPS and has unconfirmed CORS support.
Integrate your own applications using our new API.
Details from upcdatabase.org.

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Geocode an address, validate an email, track a flight or pull stock data with one account, one dashboard and one API key.
Courses, lecture videos, detailed information for courses etc. for the University of Oslo (Norway)
Official social media handles and identifiers of 155,000+ notable people and organisations
The UPC database API is provided by UPC Database (upcdatabase.org). Integrate your own applications using our new API.
Yes. The UPC database API is listed in the Open Data 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.
Yes. The UPC database API uses apiKey authentication, so you need to register for credentials before making requests.
CORS support for the UPC database API is unknown. Test a request from the browser, and fall back to a server-side call if it is blocked.
Yes. The UPC database API is served over HTTPS, so it's safe to use in production.