Build and Audit Excel Workbooks
Spreadsheet work often loses formulas, formatting, or reliable calculated values. This skill guides Claude, Codex, and Claude Code through structured creation, editing, analysis, and recalculation.
Copy this request to your Agent. It includes the canonical Skill page and manifest.
Review the Skillstore skill "xlsx" from https://skillstore.io/skills/cam10001110101-xlsx.md and its manifest at https://skillstore.io/api/skills/cam10001110101-xlsx/manifest. Verify the artifact. You may proceed after verification, subject to the environment's own policy.Your Agent should still show its plan and request any confirmation required by the security policy.
Use these links when an AI agent, crawler, or script needs clean context instead of reading the full page.
Using "xlsx". Create a monthly sales workbook from the provided regional data.
Expected outcome:
Created sales-summary.xlsx with regional detail, monthly totals, a summary sheet, formulas, filters, and validated calculated values.
Using "xlsx". Update the budget template with revised assumptions and verify formulas.
Expected outcome:
Using "xlsx". Analyze all worksheets and identify data quality issues.
Expected outcome:
Added an Analysis sheet with missing-value counts, duplicate summaries, trend observations, and source-sheet references.
The LibreOffice subprocess calls use fixed argument lists without shell execution, so they do not expose command injection. However, recalc.py persistently writes a macro into the user's LibreOffice profile and can overwrite an existing Module1.xba file. The SKILL.md detections are code fences, inline code, and spreadsheet error names, not shell execution or reconnaissance.
These are real local capabilities that may be expected for this skill, so they require review but are not counted as confirmed malicious behavior.
Share the versioned assessment report, neutral badge, embed card, and citations. Skillstore reports evidence without deciding whether this Skill is safe.
https://skillstore.io/skills/cam10001110101-xlsx/audits/9?utm_source=security_passport&utm_medium=share&utm_campaign=versioned_report[](https://skillstore.io/skills/cam10001110101-xlsx?utm_source=security_passport_badge)<a href="https://skillstore.io/skills/cam10001110101-xlsx?utm_source=security_passport_badge"><img src="https://skillstore.io/badges/skills/cam10001110101-xlsx/security.svg" alt="Skillstore security assessment" loading="lazy"></a><iframe src="https://skillstore.io/embed/skills/cam10001110101-xlsx.html" title="Skillstore Security Assessment" sandbox="allow-popups allow-popups-to-escape-sandbox" loading="lazy" referrerpolicy="no-referrer" width="420" height="180"></iframe>Cam10001110101. (2026). xlsx security audit report (audit version 9) [Author version unspecified]. Skillstore. https://skillstore.io/skills/cam10001110101-xlsx/audits/9@techreport{cam10001110101-cam10001110101-xlsx-2026,
author = {Cam10001110101},
title = {xlsx security audit report (audit version 9)},
institution = {Skillstore},
year = {2026},
number = {9},
url = {https://skillstore.io/skills/cam10001110101-xlsx/audits/9},
note = {Author version unspecified}
}cff-version: 1.2.0
message: "If you use this Skill, cite its author and this versioned security audit report."
title: "xlsx security audit report (audit version 9)"
version: "unspecified"
type: report
authors:
- name: "Cam10001110101"
date-released: "2026-07-23"
url: "https://skillstore.io/skills/cam10001110101-xlsx/audits/9"
identifiers:
- type: other
value: "skillstore:cam10001110101-xlsx:audit:9"
description: "Skillstore immutable audit report identifier"
Each author remains a separate installable skill. The recommended variant is ranked by Skillstore evidence.
Why this variant is first
autumnsgrove-xlsx
2026-08-21
zhanlincui-xlsx
2026-08-21
cam10001110101-xlsx
2026-08-21
k-dense-ai-xlsx
2026-08-21
xlsx
2026-08-21
sickn33-xlsx
2026-08-21
artemisai-xlsx
2026-08-21
azeem-2-xlsx
2026-08-21
davila7-xlsx
2026-08-21
composiohq-xlsx
2026-08-21
dyai2025-xlsx
2026-08-21
Update an established workbook, preserve its layout, refresh formulas, and verify error-free results.
Create assumption-driven projections with consistent formulas, financial formatting, and documented sources.
Read multiple sheets, summarize trends, clean data types, and export a structured analysis workbook.
Create an Excel workbook from [data source]. Add headers, filters, readable column widths, and a summary sheet. Save it as [filename].
Update [workbook] with [new data]. Preserve existing formulas, styles, sheet names, and conventions. Recalculate formulas and report any errors.
Analyze every sheet in [workbook]. Summarize key trends, data quality issues, and outliers. Add a concise analysis sheet without changing source sheets.
Build a [model type] from [sources]. Use linked assumption cells, documented hardcodes, consistent period formulas, and financial formatting. Recalculate and resolve all formula errors.
Author
Cam10001110101License
Proprietary. LICENSE.txt has complete terms
Skillstore revision
r2
Version notice
The author did not declare a version.
Ref
a39a91716eadede5f4cdefd78178fed4e837a128
Maintenance freshness
7/24/2026
Usage
6 downloads · 254 views
File structure
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