difference between keystone cli and keystone api?

revision: 90068b0143af788869116d08533d5ebc99874a17

example for the output of the cli:

name = nova
type = compute
description = Nova Compute Service

stack@devstack001:~/devstack$ keystone --username admin --password testing service-list
+----------------------------------+----------+----------+---------------------------+
| id | name | type | description |
+----------------------------------+----------+----------+---------------------------+
| 2abe1de13127417ab2cbf4476763ef1c | glance | image | Glance Image Service |
| 63788dbd6c684eae8a852b822017bbc3 | keystone | identity | Keystone Identity Service |
| 81025434e8d545e293e710e5ed4879cc | nova | compute | Nova Compute Service |
| ddb7d116c12b455382891df983ac8540 | ec2 | ec2 | EC2 Compatibility Layer |
+----------------------------------+----------+----------+---------------------------+

example for the output of the api:

http://paste.openstack.org/show/4852/

name = Compute Service
type = compute

a field description is missing...