Metadata, dependencies and release history for open-source packages across 30+ managers.
Libraries.io API is a free Open Source Projects API that requires apiKey authentication, is served over HTTPS and supports CORS, so it can be called from the browser.
Discover open source libraries, modules and frameworks you can use in your code
Details from libraries.io.

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The Libraries.io API is provided by Libraries.io (libraries.io). Discover open source libraries, modules and frameworks you can use in your code
Yes. The Libraries.io API is listed in the Open Source Projects 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.
Yes. The Libraries.io API uses apiKey authentication, so you need to register for credentials before making requests.
Yes. The Libraries.io API supports CORS, so front-end JavaScript can call it directly.
Yes. The Libraries.io API is served over HTTPS, so it's safe to use in production.