For a few releases now we have iwbacklinks. However, while it is exposed in the API, there is no special page for it.

If someone added more information to the description, like 'which API', it would be easy for a potential contributor to fix this. Its tagged with good first task tag though.

In T68293#1120669, @01tonythomas wrote:

For a few releases now we have iwbacklinks. However, while it is exposed in the API, there is no special page for it.

If someone added more information to the description, like 'which API', it would be easy for a potential contributor to fix this. Its tagged with good first task tag though.

I presume it's https://en.wikipedia.org/w/api.php?action=help&modules=query%2Biwbacklinks

Is this feature currently working?
The example link given at: https://en.wikipedia.org/w/api.php?action=help&modules=query%2Biwbacklinks
doesn't work: https://en.wikipedia.org/wiki/Special:ApiSandbox#action=query&list=iwbacklinks&iwbltitle=Test&iwblprefix=wikibooks
plus iwbacklinks doesn't appear in the dropdown menu at https://www.mediawiki.org/wiki/Special:ApiSandbox

If so, something needs to be fixed there.
If not, the manual page needs to be updated: https://www.mediawiki.org/wiki/API:Iwbacklinks

In T68293#2781565, @Quiddity wrote:

Is this feature currently working?
The example link given at: https://en.wikipedia.org/w/api.php?action=help&modules=query%2Biwbacklinks
doesn't work: https://en.wikipedia.org/wiki/Special:ApiSandbox#action=query&list=iwbacklinks&iwbltitle=Test&iwblprefix=wikibooks
plus iwbacklinks doesn't appear in the dropdown menu at https://www.mediawiki.org/wiki/Special:ApiSandbox

If so, something needs to be fixed there.
If not, the manual page needs to be updated: https://www.mediawiki.org/wiki/API:Iwbacklinks

Wikidata?

In T68293#2781565, @Quiddity wrote:

Is this feature currently working?
The example link given at: https://en.wikipedia.org/w/api.php?action=help&modules=query%2Biwbacklinks
doesn't work: https://en.wikipedia.org/wiki/Special:ApiSandbox#action=query&list=iwbacklinks&iwbltitle=Test&iwblprefix=wikibooks

That's because nothing on enwiki links to wikibooks:Test. It's not possible for API examples to give examples that will always give results every single time, many simply include a valid query that might need tweaking for the particular wiki you're on.

If you try it with no title, or with a title that is linked from enwiki, it works fine.

https://en.wikipedia.org/wiki/Special:ApiSandbox#action=query&list=iwbacklinks&iwblprefix=wikibooks
https://en.wikipedia.org/wiki/Special:ApiSandbox#action=query&list=iwbacklinks&iwbltitle=0.999...&iwblprefix=wikibooks

plus iwbacklinks doesn't appear in the dropdown menu at https://www.mediawiki.org/wiki/Special:ApiSandbox

Yes it does.