Statistics of the World
Economic data for 218 countries — GDP, population, inflation, and 440+ indicators from IMF and World Bank

Industry statistics, each traced to its primary source with a verbatim quote, CC BY 4.0.
StatOrigin 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.
REST API for 232938 sourced industry statistics from 171 primary sources. Free, CORS-open, 1,000 requests a day without a key, and every response carries…
Details from statorigin.org.

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Economic data for 218 countries — GDP, population, inflation, and 440+ indicators from IMF and World Bank
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The StatOrigin API is provided by StatOrigin (statorigin.org). REST API for 232938 sourced industry statistics from 171 primary sources. Free, CORS-open, 1,000 requests a day without a key, and every response carries…
Yes. The StatOrigin 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 StatOrigin API requires no authentication, so you can start making requests without signing up.
Yes. The StatOrigin API supports CORS, so front-end JavaScript can call it directly.
Yes. The StatOrigin API is served over HTTPS, so it's safe to use in production.