The GO ontology and annotations can be queried through the GO REST API (http://api.geneontology.org/api). This API follows the BioLink model (https://biolink.github.io/biolink-model/) whose purpose is to provide a common set of vocabulary and relationships to query biological data over multiple databases and fields in a consistent manner. A common interactive user interface, powered by swagger, is provided to help users design their queries. The GO API is hosted on the AWS cloud to ensure high availability and to provide a simple way to increase scalability on demand. It is currently used by the GO ribbon.
