Script to find Oracle API's for any module?

Script to find Oracle API's for any module:

select substr(a.OWNER,1,20)

, substr(a.NAME,1,30)

, substr(a.TYPE,1,20)

, substr(u.status,1,10) Stat

, u.last_ddl_time

, substr(text,1,80) Description

from dba_source a, dba_objects u

WHERE 2=2

and u.object_name = a.name 

and a.text like '%Header%'

and a.type = u.object_type

and a.name like 'AP_%API%' –- Checking for AP Related APIs

order by

a.owner, a.name