Is xlsx safe to install?

No critical findings, some security notes. The scan covers prompt injection, hidden Unicode, remote code execution and credential access in every text file of the skill. It cannot judge intent, so read any flagged line in context before installing.

How was this score calculated?

Four checks of 25 points each: spec, efficiency, clarity and security. Findings take points off the check they belong to, and any critical finding caps the grade at F. The same scanner runs in your browser at proskills.dev/scan.

Is this report current?

It was made from commit dbd4588 on 2026-10-16. If the skill has changed since, paste the new version into the scanner for a fresh score.

I wrote this skill. Can I fix the score or have the page removed?

Fix the findings and push. The reports are rebuilt from GitHub on a schedule, so the next run picks the change up. To have the page removed, open an issue on the ProSkills GitHub repo.

Scan reports · anthropics/skills

xlsx: scan report

Use this skill any time a spreadsheet file is the primary input or output. This means any task where the user wants to: open, read, edit, or fix an existing .xlsx, .xlsm, .xltx, .csv, or .tsv file (e.g., adding… An automated scan of this public skill from anthropics/skills: security, token cost, spec and clarity, with every finding and its fix.

Result

Verdict

xlsx

94/100 · grade A

anthropics/skills/skills/xlsx at dbd4588

Spec 21 · Efficiency 25 · Clarity 25 · Security 23 (each out of 25)

Always loaded 239 tokens · on trigger 1,876 · on demand 29,347

spec/broken-ref warn · SKILL.md:23References recalc.py, which isn't in the skill folder.
sec/plain-http info · SKILL.mdLinks over plain http.

Where it comes from

Source

Fact	Value
Repository	anthropics/skills
Skill folder	skills/xlsx
Stars	181,568
License	None stated
Commit scanned	dbd4588
Scanned	2026-10-16
Files	14

ProSkills doesn't host or redistribute this skill. Get it from its repository, and check the license before reusing it. Something wrong here? Open an issue for a rescan or removal.

For maintainers

Badge for the README

If you maintain this skill, this badge shows its score and links to this report. Fix findings and the score moves with the next scan.

[![ProSkills scan 94/100](https://proskills.dev/badge?score=94)](https://proskills.dev/reports/anthropics-xlsx)

Alternatives

Scanned alternatives on ProSkills

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Same repository

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FAQ

Questions

Is xlsx safe to install?: No critical findings, some security notes. The scan covers prompt injection, hidden Unicode, remote code execution and credential access in every text file of the skill. It cannot judge intent, so read any flagged line in context before installing.
How was this score calculated?: Four checks of 25 points each: spec, efficiency, clarity and security. Findings take points off the check they belong to, and any critical finding caps the grade at F. The same scanner runs in your browser at proskills.dev/scan.
Is this report current?: It was made from commit dbd4588 on 2026-10-16. If the skill has changed since, paste the new version into the scanner for a fresh score.
I wrote this skill. Can I fix the score or have the page removed?: Fix the findings and push. The reports are rebuilt from GitHub on a schedule, so the next run picks the change up. To have the page removed, open an issue on the ProSkills GitHub repo.

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