WolfXL blog
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Measured write-ups on what happens to Office files when Python code and AI agents edit them.
Agents that save a spreadsheet quietly rewrite it
On 4 of 8 workbooks, a one-cell agent edit through openpyxl and LibreOffice removed slicers, timelines, sparklines, or a Power Pivot data model, and the recalculation reported success every time. WolfXL modify mode with native calculation kept every part.
Teaching agents to update the Office files a business already uses
How the Wolf reporting engines apply one approved dataset to an existing spreadsheet, presentation, and memo, with editable outputs, refusals before partial publication, and recovery after a process kill at the boundaries the qualification exercises.
What happens when an AI agent edits a spreadsheet? Inside headless LibreOffice's silent OOXML rewrites
We diffed raw OOXML packages and benchmarked performance when AI agents use headless LibreOffice versus a dedicated spreadsheet engine.