
Portuguese free currency prices and conversion with no rate limits.
Economia.Awesome API is a free Currency Exchange API that requires no API key, is served over HTTPS and has unconfirmed CORS support.
API de Cotações em tempo real com mais de 150 moedas!
Details from docs.awesomeapi.com.br.

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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.
Real-time and historical currency rates JSON API
The Economia.Awesome API is provided by AwesomeAPI (docs.awesomeapi.com.br). API de Cotações em tempo real com mais de 150 moedas!
Yes. The Economia.Awesome API is listed in the Currency Exchange 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 Economia.Awesome API requires no authentication, so you can start making requests without signing up.
CORS support for the Economia.Awesome API is unknown. Test a request from the browser, and fall back to a server-side call if it is blocked.
Yes. The Economia.Awesome API is served over HTTPS, so it's safe to use in production.