This tool is still under development and might not always work properly.
Please be aware that this is a heavy operation that needs time to be processed and results quite a large output of several MB html source. The size of this operation depends on the number of articles selected by the catscan above. If the tool result cannot be processed within 300s or if it requests more than 256M of server memory, the script will terminate without results (error: “400 – Bad Request”) and you could try smaller selections.
This tool uses the replica databases available on Tool Labs for evaluation of the request. Edits in Wikipedia are typically available in the replicas after some seconds. Results are based on the current categorization, thus deleted articles and formerly categorized articles that are no longer part of the selected category tree are not included here.