Papi has custom WP-CLI commands since version 3.
$ wp papi
usage: wp papi post <command>
or: wp papi type <command>
See 'wp help papi <command>' for more information on a specific command.
Post command
This command can be used to show which properties a post has and which properties that has a value.
$ wp papi post get 1505
+----------+----------+-----------+
| slug | type | has value |
+----------+----------+-----------+
| name | string | true |
+----------+----------+-----------+
Term command
This command can be used to show which properties a term has and which properties that has a value.
$ wp papi term get 1505
+----------+----------+-----------+
| slug | type | has value |
+----------+----------+-----------+
| name | string | true |
+----------+----------+-----------+
Type command
This command can be used to list all types that are registered with Papi, it will list all types and not just page types.
If you use a different type name in your classes when you extended Papi_Page_Type, for example Feature_Module_Type, the type value in the list will show module as value instead of page
$ wp papi type list
+---------------+--------------------------+------------+----------------------------+-----------------+------------+
| name | id | post_type | template | number of pages | type |
+---------------+--------------------------+------------+----------------------------+-----------------+------------+
| Article page | pages/article-page-type | page | pages/article-page.php | 3 | page |
| List | options/list-option-type | n/a | n/a | n/a | option |
+---------------+--------------------------+------------+----------------------------+-----------------+------------+