You are looking at the HTML representation of the XML format.
HTML is good for debugging, but probably is not suitable for your application.
See complete documentation, or
API help for more information.
<?xml version="1.0"?>
<api>
<help>
<module>* list=categorymembers (cm) *
List all pages in a given category
This module requires read rights
Parameters:
cmtitle - Which category to enumerate (required). Must include Category: prefix. Cannot be used together with cmpageid
cmpageid - Page ID of the category to enumerate. Cannot be used together with cmtitle
cmprop - What pieces of information to include
ids - Adds the page ID
title - Adds the title and namespace ID of the page
sortkey - Adds the sortkey used for sorting in the category (hexadecimal string)
sortkeyprefix - Adds the sortkey prefix used for sorting in the category (human-readable part of the sortkey)
type - Adds the type that the page has been categorised as (page, subcat or file)
timestamp - Adds the timestamp of when the page was included
Values (separate with '|'): ids, title, sortkey, sortkeyprefix, type, timestamp
Default: ids|title
cmnamespace - Only include pages in these namespaces
Values (separate with '|'): 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 110, 111, 310, 311, 274, 275, 102, 103, 108,
109, 170, 171, 202, 200, 100, 101, 106, 107, 420, 421, 201, 203
Maximum number of values 50 (500 for bots)
cmtype - What type of category members to include. Ignored when cmsort=timestamp is set
Values (separate with '|'): page, subcat, file
Default: page|subcat|file
cmcontinue - For large categories, give the value retured from previous query
cmlimit - The maximum number of pages to return.
No more than 500 (5000 for bots) allowed
Default: 10
cmsort - Property to sort by
One value: sortkey, timestamp
Default: sortkey
cmdir - In which direction to sort
One value: asc, desc
Default: asc
cmstart - Timestamp to start listing from. Can only be used with cmsort=timestamp
cmend - Timestamp to end listing at. Can only be used with cmsort=timestamp
cmstartsortkey - Sortkey to start listing from. Must be given in binary format. Can only be used with cmsort=sortkey
cmendsortkey - Sortkey to end listing at. Must be given in binary format. Can only be used with cmsort=sortkey
cmstartsortkeyprefix - Sortkey prefix to start listing from. Can only be used with cmsort=sortkey. Overrides cmstartsortkey
cmendsortkeyprefix - Sortkey prefix to end listing BEFORE (not at, if this value occurs it will not be included!). Can only be used with cmsort=sortkey. Overrides cmendsortkey
Examples:
Get first 10 pages in [[Category:Physics]]:
api.php?action=query&list=categorymembers&cmtitle=Category:Physics
Get page info about first 10 pages in [[Category:Physics]]:
api.php?action=query&generator=categorymembers&gcmtitle=Category:Physics&prop=info
Help page:
https://www.mediawiki.org/wiki/API:Categorymembers
</module>
</help>
</api>