Take a look here
for example on creating, updating, and deleting atlas entities.
To delete trait/tag in altas via rest you need the GUID. then issue this
curl -X DELETE -u admin:admin -H 'Content-Type: application/json; charset=UTF-8' 127.0.0.1:21000/api/atlas/entities?guid=c62bb1cd-069b-4176-ab7a-33e8a224bf53
Trait/Tag instances are not “Entities” and they do not have a uniquely identifiable GUID. We can only associate/disassociate trait instances to entities.
That is what I thought, but the original response is mentioning GUID. I want to delete standalone tags and the ones associated with an entity.
Yes, currently we do not support tag deletion, only association/disassociation with entities. This will be addressed in future release. Please check the community for updates.