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 '%XXXX%'
ORDER BY
a.owner,
a.name;