You can use the Orchestrator REST API to retrieve a list of objects tagged with a specific tag and filter them by object type.

Procedure

Make a GET request at the URL of the object type:
GET http://{orchestrator_host}:{port}/vco/api/catalog/{namespace}/{objectType}/?tags=tag1&tags=:tag2=value

Results

If the GET request is successful, you receive the status code 200.