Directory / document-skills
document-skills
ExcellentFour coordinated skills for reading, editing, and creating Excel, Word, PDF, and PowerPoint files — including financial modeling standards and tracked-change support.
Verdict
Document-skills is the most polished of the Anthropic example-skill bundles: four coordinated SKILL.md files and Python renderers covering the full Office document surface, with production-grade conventions baked in. The xlsx skill ships with professional financial modeling standards — industry color-coding, SEC citation templates, formula error prevention rules — that signal the target user is finance and consulting, not hobbyists. LibreOffice subprocess calls use list-form argument arrays throughout, preventing shell injection. No network calls at runtime; everything executes locally against the user's files.
Install
Source: github.com/anthropics/skills
Audit receipts
Every listing is verified against a specific commit. These are the receipts.
Installed via anthropics/skills GitHub marketplace (reserved name requires org source). All four sub-skills (xlsx, docx, pdf, pptx) resolved. No runtime deps beyond Python stdlib + python-docx/openpyxl.
subprocess used in recalc.py, soffice.py, accept_changes.py to invoke LibreOffice and pdftoppm — all use list-form args with no shell=True; user-supplied filenames are list elements, not interpolated into a shell string. HTTP strings in xlsx SKILL.md are XML namespace URIs (openxmlformats.org), not live endpoints.