w14n
Brazilian company profiles by CNPJ, CNAE establishment counts and municipality coordinates
Composite travel-safety scores for 180 countries (FCDO + US State + GPI + WGI + live incident wire), OpenAPI 3.1 spec, CC BY 4.0.
Warnely API is a free Open Data API that requires no API key, is served over HTTPS and supports CORS, so it can be called from the browser.

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Brazilian company profiles by CNPJ, CNAE establishment counts and municipality coordinates
Yes. The Warnely 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.
No. The Warnely API requires no authentication, so you can start making requests without signing up.
Yes. The Warnely API supports CORS, so front-end JavaScript can call it directly.
Yes. The Warnely API is served over HTTPS, so it's safe to use in production.