Online Mendelian Inheritance in Man, "An Online Catalog of Human Genes and Genetic Disorders"
See: https://omim.org/help/api
The OMIM API URLs are organized in a very simple fashion: /api/[handler]?[parameters] /api/[handler]/[component]?[parameters] /api/[handler]/[action]?[parameters] The handler refers to the data object, such as an entry or a clinical synopsis.
Handlers: entry, clinicalSynopsis, geneMap, search, html, dump