Xlsx

Handles Excel file generation and manipulation with a focus on producing polished, error-free spreadsheets. The skill enforces professional standards like zero formula errors, consistent fonts, and proper color coding for financial models. It's especially useful if you're building financial templates or data reports where presentation matters. One nice touch: it explicitly preserves existing template conventions when updating files rather than forcing its own formatting rules. Originally forked from Anthropic's official skills collection, so the core functionality has had some real-world testing. With 165 installs and a security warning from Gen Agent Trust Hub, you'll want to review what that audit flagged before adding it to production workflows.