i planning use service other sdk, don't know how create rest api without having connect datasource. currently, have create remote hook inside loopback database model not relevant each other. example, call text message service api twilio, have create remote hook in class model since it's connected database. can create api without creating model , connected datasource.
for using 3rd party rest apis can use loopback-connector-rest datasource. documentation connector can found here.
otherwise, can create model without connecting datasource setting in model-config.json follows:
"modelname": { "datasource": null } 