US Patent 11425221 Runtime extensible application programming interface server

A device comprising a memory and a processor may be configured to perform techniques by which to provide a runtime extensible application programming (API) server. The memory may store a datastore that includes a data model. The processor may execute the API server by which to access the data model stored to the datastore. The API server may receive, from a controller, a registration request (providing a resource definition specifying a semantic validation rule) to register a new data model to the datastore, and register the new data model to the datastore. The API server may next receive, from a client, a create request to create a resource for the new data model having initial data that conforms to the resource definition, apply the semantic validation rule to the initial data, and create, responsive to validating the create request, the resource for the new data model in the datastore.