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APIs for Scholarly Resources

A list of commonly-used APIs for scholarly resources

OpenAlex API

OpenAlex is “an index of hundreds of millions of interconnected entities across the global research system”. It aggregates and standardizes data from primarily Microsoft Academic Graph (MAG) and Crossref, as well as ORCID, Unpaywall, institutional repositories, etc. The API provides free access to OpenAlex data.


To be included in the "polite pool" (much faster and more consistent response times), requests must include your email as a parameter at the end of the URL, like this:

Return Format

The API return results in JSON format. The data schema is available here.

There is also a web interface to the API available at


  • There's no limit imposed, but OpenAlex encourages you to limit the number of calls made to 100,000 calls per day.

Useful Links