Application Program Interface (API) Access to OMIM

In addition to searching OMIM through the website, OMIM offers a programmatic interface in the form of a REST-based API against which requests can be made over HTTP. The OMIM website is built on this API so any data and functionality available in the website is also available from the API. The data are updated nightly, and the response can be formatted in XML, JSON, JSONP, Python, or Ruby.

For-profit companies or anyone planning to redisplay or incorporate OMIM data into software MUST secure a license to obtain access to these files. Registering below will initiate this process, and you can expect to hear from the JHU licensing office within 2 business days.

Please ensure that you describe accurately how you plan to use OMIM so that we can process your registration quickly. Once your registration is approved you will receive an email containing an API key which will allow you access the data. Non-compliant registrations will be automatically rejected.

Johns Hopkins University holds the copyright to OMIM including the collective data therein. I hereby declare that I will not use or share the data contained in OMIM for any commercial purposes, will not develop a derivative database, nor distribute the data to a third party without first obtaining a license from Johns Hopkins University to do so. I have included a brief description of how I will use OMIM in my registration. If OMIM data are used in research, I will notify OMIM and send a copy of the reference.


Please enter your institutional email address (By entering *.com address, you give a permission for a JHU Tech licensing representative to contact you). Email addresses from generic email providers such as Gmail, Yahoo, Hotmail, Live, MSN, iCloud,, or will be automatically rejected.

Note: OMIM contains data for research and educational use only. Users seeking information about a personal medical or genetic condition are urged to consult with a qualified physician for diagnosis and for answers to personal questions.