
Spanish company public data and BORME event timelines.
OpenMercantil API is a free Government API that requires no API key, is served over HTTPS and supports CORS, so it can be called from the browser.
Documentación de la API OpenMercantil: endpoints /empresa, /search, /eventos, /sources/freshness, /export con ejemplos en curl, Python y JavaScript.
Details from openmercantil.es.

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.
Unofficial Philippine Professional Regulation Commission's examination schedule
The OpenMercantil API is provided by OpenMercantil (openmercantil.es). Documentación de la API OpenMercantil: endpoints /empresa, /search, /eventos, /sources/freshness, /export con ejemplos en curl, Python y JavaScript.
Yes. The OpenMercantil 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 OpenMercantil API requires no authentication, so you can start making requests without signing up.
Yes. The OpenMercantil API supports CORS, so front-end JavaScript can call it directly.
Yes. The OpenMercantil API is served over HTTPS, so it's safe to use in production.