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UMLS API Interactive Interface

This interface is designed to help you learn to use the UMLS API.

Enter your API key and try a few searches.

Click "Raw Data" to see the raw json data returned by the API.

Check "Request URL" to see the exact URL pattern for any given request.

Click the links in results to explore the different endpoints included in the UMLS API.

We welcome your feedback on our customer service form. Please use "UMLS REST API feedback" in your subject line.

Check out the Postman sample collection to help you get started using the UMLS REST API.

API Terms of Service