Start with the evidence
Name the documents and the fields to compare, such as reference, date, currency and total. Keep the request separate from instructions to alter either source.
Work through the example
Draft A says USD420 and draft B says USD450. A useful comparison highlights the USD30 change and asks for its source; it does not choose the larger amount as the correct one.
Make the next step clear
Verify the reported differences yourself and send unresolved changes to the responsible reviewer. Retain the original versions so the comparison can be reproduced.
Keep the source context
Eftheia’s unnamed AI agent helps with accounting work, document drafts and finding information. The examples are ways to frame and review a task, not a list of guaranteed tools, autonomous actions or supported external systems.