If you request /v1/resource/generic/<id> you will get the resource for that id for the project your are authed for.
When you do a request a token is always scoped to user/project/domain with Keystone. So if you want to do the same request for a different project you need a different token.
If you request /v1/resource/ generic/ <id> you will get the resource for that id for the project your are authed for.
When you do a request a token is always scoped to user/project/domain with Keystone. So if you want to do the same request for a different project you need a different token.