borghei/claude-skills · documents/xlsx-toolkit/SKILL.md

xlsx-toolkit skillA

xlsx-toolkit is agent-read markdown (skill) from borghei/claude-skills: Audit Microsoft Excel (.xlsx) workbooks for formula density, external references, named ranges, hidden sheets, and data validation. Use when reviewing a financial model, sharing a workbook externally, or checking for data leakage..

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add borghei/claude-skills/xlsx-toolkit@v1.0.0
Exact content
mdr add borghei/claude-skills/xlsx-toolkit@sha256:427b39b91ee74ffd

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_fcw6ddequ6hkleyr.svg)](https://markdownregistry.com/a/art_fcw6ddequ6hkleyr)

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Versions

versioncommittedcommitsizeaudit
v1.0.0 latest2026-06-22 65b93aa 5,507 BA view · diff
v1.0.02026-06-17 0c19211 4,836 BA view · diff
v1.0.02026-05-04 c8a4c1c 4,939 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (5507 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

borghei/claude-skills · 778 stars · license NOASSERTION · pushed 2026-08-12 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_fcw6ddequ6hkleyr
GET https://markdownregistry.com/api/v1/resolve?ref=borghei/claude-skills/xlsx-toolkit
GET https://markdownregistry.com/api/v1/blob/427b39b91ee74ffd42edaa69b82a9ed8c160662dd4192efc6abde61d9bffee5d

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.