[Wikidata-tech] BREAKING CHANGE: Wikidata API changing top upper-case IDs. - Wikidata-tech

Hi all.

With today's deployment, the Wikibase API modules used on wikidata.org will change from using lower-case IDs (q12345) to upper-case IDs (Q12345). This is done for consistency with the way IDs are shown in the UI and used in URLs.

The API will continue to accept entity IDs in lower-case as well as upper-case. Any bot or other client that has no property or item IDs hardcoded or configured in lower case should be fine.

If however your code looks for some specific item or property in the output returned from the API, and it's using a lower-case ID to do so, it may now fail to match the respective ID.

There is potential for similar problems with Lua code, depending on how the data structure is processed by Lua. We are working to minimize the impact there.

Sorry for the short notice.

Please test your code against test.wikidata.org and let us know if you find any issues.

Thanks, Daniel

PS: issue report on bugzilla: https://bugzilla.wikimedia.org/show_bug.cgi?id=53894