A crowdsourced map of public pinball machines.
Pinball Map API is a free Geocoding 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 postal codes (CEP) with IBGE coordinates, addresses and the companies registered there
Yes. The Pinball Map API is listed in the Geocoding 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 Pinball Map API requires no authentication, so you can start making requests without signing up.
Yes. The Pinball Map API supports CORS, so front-end JavaScript can call it directly.
Yes. The Pinball Map API is served over HTTPS, so it's safe to use in production.