The biggest research repository

Free real-time machine access to the world's largest collection of open access papers.

Unlimited access

Harmonised access to data from across the network of CORE providers.

Machine-readable access

Direct machine access to full texts of research papers.

Detailed documentation

Accessible and easy to understand description of using CORE API.

How it works

How it works

CORE collects, harmonises and enriches large quantities of both metadata and full text research articles from thousands of data providers. On top of this continuously growing corpus, we provide a truly unique API providing real-time machine access to both the metadata and full texts of research papers, enabling developers to build and run innovative applications on top of CORE's content.

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Viktor Botev

Viktor Botev


“We are integrating the CORE API into our product, IRIS, because so far it is the open access portal that covers almost all open access content, provides easy to integrate API and has a powerful search querying engine. We want to make open access articles more easily accessible and more useful to researchers and the open public and we see the CORE API as a way to speed that up.”

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Please register to receive an API key and start testing the live examples.

A good starting point to start coding with our API is to follow the examples gallery available in the documentation. In collaboration with rOpenSci you can find an R client for the CORE API in the GitHub repository. All our SDKs are available from our GitHub organisation.

Yes, you can use the CORE API for commercial purposes, (Terms & Conditions) apply. We provide 30 Day Free Trial for Institution and Enterprise. We will ask you for your circumstances during the registration process and we might contact you afterwards to clarify any points and assess your eligibility for a free licence. If your circumstances change, you need to let us know about it.

If you use CORE in your work, we kindly request you to cite one of our publications.

cite publication

What’s included

The API provides you with:

  • Real-time machine access to the world's largest corpus of open access research papers, containing both metadata and full texts.
  • Harmonised access to data accross CORE’s provider network
  • Detailed documentation on how to use the CORE API with live examples and wrappers to common programming languages.
  • One batch request or five single requests per 10 seconds. Need a faster rate? Contact us.
  • Scalable API rates:
    1. Free API access without registration (subject to our T&Cs)
    2. Better performance for registered users
    3. Need an even faster rate? Contact us for a VIP rate quote.

If you use CORE in your work, we kindly request you to cite one of our publications.

What’s included

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full texts

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searchable research papers

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see data statistics

Register for an API key

Enter your email address to register for a new API key, or restore a previous API key. If you are registering in an institutional capacity, please enter your institutional email.

We will send the key and instructions to this address

Check our Terms & Conditions to see if you are elegible for a free license.