That's starting to cross over into SCIM - http://www.simplecloud.info/ http://www.simplecloud.info/ It's a pretty cool spec and we use it in my day job (Okta)

That's starting to cross over into SCIM - http://www.simplecloud.info/ http://www.simplecloud.info/ It's a pretty cool spec and we use it in my day job (Okta) but it's not widely implemented. If a few major providers - like Google, Microsoft, Github, Wordpress, etc - implemented it, I think it'd explode.