xlsx
No security findings. Scanned 2 times, most recently 2026-02-01.
Second scanner: NVIDIA SkillSpector
Independent static run, no language model, over the same files as the Cisco scan above. How the two scanners compare across the whole corpus: Two scanners, one corpus.
What this skill does
Comprehensive spreadsheet creation, editing, and analysis with support for formulas, formatting, data analysis, and visualization. When Claude needs to work with spreadsheets (.xlsx, .xlsm, .csv, .tsv, etc) for: (1) Creating new spreadsheets with formulas and formatting, (2) Reading or analyzing data, (3) Modify existing spreadsheets while preserving formulas, (4) Data analysis and visualization in spreadsheets, or (5) Recalculating formulas
- Package
- 3 files, 18 KB
- SKILL.md
- 1411 words, 12+ sections
- Code
- Python (1)
- License
- Proprietary. LICENSE.txt has complete terms
SKILL.md covers: Requirements for Outputs · All Excel files · Zero Formula Errors · Preserve Existing Templates (when updating templates) · Financial models · Color Coding Standards · Number Formatting Standards · Formula Construction Rules · XLSX creation, editing, and analysis · Overview · Important Requirements · Reading and analyzing data
Findings
No findings. SAFE
What is in the package
| File | Kind | Size |
|---|---|---|
LICENSE.txt | doc | 1.4 KB |
SKILL.md | doc | 10 KB |
recalc.py | script | 6.3 KB |
External hosts referenced
www.anthropic.com openoffice.org
Hostnames that appear in the skill's files. Referencing a host is not a finding; compare against the findings above and the skill's stated purpose.
Package contents recorded 2026-10-22 at commit 69c0b1a06741. The scan above ran against the version current at scan time; the two can differ if the skill has since been updated.
What we checked
- Static analyzer. Pattern rules over SKILL.md and bundled files: known-bad commands, exfiltration URLs, secrets, obfuscation.
- Behavioral analyzer. Checks what the skill asks the agent to do against what its description claims it does.
- Llm analyzer. A language model reads the skill and reports intent-level issues the rules cannot express.
- Trigger analyzer. Looks for instructions that fire on conditions the user did not ask for.
What we did not check
- Runtime behaviour. The skill was not executed; findings come from reading its files.
- Anything fetched at install or run time, including remote scripts, package dependencies, and URLs the skill tells the agent to open.
- Content the analyzers cannot read: images, binaries, and some non-English text.
- Known scanner bypass classes. See the methodology and limitations page.
Scan history
| Date | Verdict | Findings | Change | Analyzers | Raw |
|---|---|---|---|---|---|
| SAFE | 0 | = | static behavioral llm trigger | JSON | |
| SAFE | 0 | first scan | static behavioral llm trigger | JSON |
Sources
- Repository: https://github.com/anthropics/skills/tree/main/skills/xlsx
- Raw scan result: skills-xlsx-scan.json
- Badge for your README:
- Request a re-scan