Home / bruc3van / agent-skills-guard · GitHub

xlsx SKILL.md skillA

This file is byte-identical to the first copy the registry indexed, one of 7 indexed copies. Same content hash, so the same checks give both the same grade.

xlsx from bruc3van/agent-skills-guard is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add bruc3van/agent-skills-guard/xlsx@git:20260608.9f59278

Pins git:20260608.9f59278 in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: bruc3van/agent-skills-guard
Path: test/test-skills/positive-real/agents-xlsx/SKILL.md
Versions recorded: 1
Latest version: git:20260608.9f59278, committed Jun 8, 2026
Size: 11,463 bytes
Repository stars: 392
License: MIT

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, .csv, or .tsv file (e.g., adding columns, computing formulas, formatting, charting, cleaning messy data); create a new spreadsheet from scratch or from other data sources; or convert between tabular file formats. Trigger especially when the user references a spreadsheet file by name or path — even casually (like…

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Requirements for Outputs

## All Excel files

### Professional Font
- Use a consistent, professional font (e.g., Arial, Times New Roman) for all deliverables unless otherwise instructed by the user

### Zero Formula Errors
- Every Excel model MUST be delivered with ZERO formula errors (#REF!, #DIV/0!, #VALUE!, #N/A, #NAME?)

### Preserve Existing Templates (when updating templates)
- Study and EXACTLY match existing format, style, and conventions when modifying files
- Never impose standardized formatting on files with established patterns
- Existing template conventions ALWAYS override these guidelines

## Financial models

### Color Coding Standards
Unless otherwise stated by the user or existing template

#### Industry-Standard Color Conventions
- **Blue text (RGB: 0,0,255)**: Hardcoded inputs, and numbers users will change for scenarios
- **Black text (RGB: 0,0,0)**: ALL formulas and calculations
- **Green text (RGB: 0,128,0)**: Links pulling from other worksheets within same workbook
- **Red text (RGB: 255,0,0)**: External links to other files
- **Yellow background (RGB: 255,255,0)**: Key assumptions needing attention or cells that need to be updated
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add bruc3van/agent-skills-guard/xlsx@sha256:dd316db7785a6be1

The line at the top of this page pins the label git:20260608.9f59278, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

[![mdr](https://markdownregistry.com/badge/art_2ebvuhwuy4pz2gar.svg)](https://markdownregistry.com/a/art_2ebvuhwuy4pz2gar)

3 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 1 version of this file, committed on Jun 8, 2026.

version	committed	commit	size	audit
git:20260608.9f59278 latest	2026-06-08	9f59278	11,463 B	A	view

Audit of the latest version

A 17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the 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 (11463 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

bruc3van/agent-skills-guard · 392 stars · license MIT · pushed 2026-09-26 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_2ebvuhwuy4pz2gar
GET https://markdownregistry.com/api/v1/resolve?ref=bruc3van/agent-skills-guard/xlsx
GET https://markdownregistry.com/api/v1/blob/dd316db7785a6be12966c2a2d848931fbf5f518b3cdb0a66fa62ee835ead1cfc

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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