Official company data from 56 European business registers as normalized JSON.
GlobalEntity API is a free Business API that requires apiKey authentication, is served over HTTPS and supports CORS, so it can be called from the browser.
GlobalEntity API developer documentation — authenticate with an API key and fetch official, real-time company data from 66 business registries as clean JSON.
Details from globalentityapi.com.

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The GlobalEntity API is provided by GlobalEntity API (globalentityapi.com). GlobalEntity API developer documentation — authenticate with an API key and fetch official, real-time company data from 66 business registries as clean JSON.
Yes. The GlobalEntity API is listed in the Business 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 GlobalEntity API uses apiKey authentication, so you need to register for credentials before making requests.
Yes. The GlobalEntity API supports CORS, so front-end JavaScript can call it directly.
Yes. The GlobalEntity API is served over HTTPS, so it's safe to use in production.