Agent skill

XLSX Official

by aiskillstore in aiskillstore/marketplace

Unless otherwise stated by the user or existing template. An agent skill from aiskillstore/marketplace.

ProprietaryAuto-check passedDocuments & Office

Install XLSX Official

skills CLI

$ npx skills add aiskillstore/marketplace --skill xlsx-official -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install aiskillstore/marketplace xlsx-official --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/sickn33/xlsx-official .claude/skills/xlsx-official && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "xlsx-official" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/sickn33/xlsx-official into .claude/skills/xlsx-official/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "xlsx-official", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/aiskillstore/marketplace/tree/main/skills/sickn33/xlsx-official

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add aiskillstore/marketplace --skill xlsx-official -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install aiskillstore/marketplace xlsx-official --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/sickn33/xlsx-official .agents/skills/xlsx-official && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "xlsx-official" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/sickn33/xlsx-official into .agents/skills/xlsx-official/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "xlsx-official", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add aiskillstore/marketplace --skill xlsx-official -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install aiskillstore/marketplace xlsx-official --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/sickn33/xlsx-official .cursor/skills/xlsx-official && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "xlsx-official" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/sickn33/xlsx-official into .cursor/skills/xlsx-official/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "xlsx-official", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/aiskillstore/marketplace.git --path skills/sickn33/xlsx-official

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add aiskillstore/marketplace --skill xlsx-official -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install aiskillstore/marketplace xlsx-official --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/sickn33/xlsx-official .gemini/skills/xlsx-official && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "xlsx-official" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/sickn33/xlsx-official into .gemini/skills/xlsx-official/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "xlsx-official", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install aiskillstore/marketplace xlsx-official

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add aiskillstore/marketplace --skill xlsx-official -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/sickn33/xlsx-official .github/skills/xlsx-official && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "xlsx-official" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/sickn33/xlsx-official into .github/skills/xlsx-official/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "xlsx-official", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add aiskillstore/marketplace --skill xlsx-official -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install aiskillstore/marketplace xlsx-official --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/sickn33/xlsx-official .opencode/skills/xlsx-official && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "xlsx-official" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/sickn33/xlsx-official into .opencode/skills/xlsx-official/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "xlsx-official", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: xlsx-official
GitHub stars: 433
Used in: 4 other repos
Token cost: ~2.7k tokens
SKILL.md length: 1,009 words
Files: 4
Skills in repo: 1,044
Repo updated: Oct 10, 2026
First seen: Oct 7, 2026
Licence: Proprietary

At a glance

Unless otherwise stated by the user or existing template. An agent skill from aiskillstore/marketplace.

Works in 6 steps: Choose tool: pandas for data, openpyxl… → Create/Load: Create new workbook or load… → Modify: Add/edit data, formulas, and… → …
Tasks that involve Excel spreadsheets
SKILL.md covers All Excel files, Financial models, Overview and Important Requirements, plus 7 more sections
Runs Python scripts from its folder; calls python

What it does

XLSX Official is an agent skill from aiskillstore/marketplace. Unless otherwise stated by the user or existing template

Its SKILL.md is about 2.7k tokens, which your agent loads only when the skill is triggered. The skill folder holds 3 other files (for example `recalc.py` and `skill-report.json`).

It sits in Documents & Office, covering Excel spreadsheets. It works with Microsoft Excel. The repository describes itself as: Security-audited skills for Claude, Codex & Claude Code. One-click install, quality verified.

When your agent uses it

Tasks that involve Excel spreadsheets

Example prompts

“/xlsx-official”

Requirements

Python 3

Workflow steps

6 steps, taken from the first numbered list in SKILL.md.

Choose tool: pandas for data, openpyxl for formulas/formatting
Create/Load: Create new workbook or load existing file
Modify: Add/edit data, formulas, and formatting
Save: Write to file
Recalculate formulas (MANDATORY IF USING FORMULAS): Use the recalc.py script
Verify and fix any errors

What it can do on your machine

Read from SKILL.md and the folder at commit 44923f3. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Ships script files (Python), which the agent can run.
Shell commands in SKILL.md call:
- python
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

XLSX Official loads about 2.7k tokens when it runs. Until then it costs about 18 tokens; SKILL.md has 1,009 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~18
When it runs · the whole SKILL.md, loaded when a task matches: ~2.7k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

Its licence (Proprietary) doesn't allow us to republish the file, so here is its outline and opening line. It has 1,009 words (~2,669 tokens).

“Unless otherwise stated by the user or existing template”

— opening of SKILL.md by aiskillstore, Proprietary

name: xlsx-official
risk: critical
source: community
date_added: 2026-02-27

Outline of SKILL.md

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
Data analysis with pandas
Excel File Workflows
CRITICAL: Use Formulas, Not Hardcoded Values
❌ WRONG - Hardcoding Calculated Values
✅ CORRECT - Using Excel Formulas
Common Workflow
Creating new Excel files
Editing existing Excel files
Recalculating formulas
Formula Verification Checklist
Essential Verification
Common Pitfalls
Formula Testing Strategy
Interpreting recalc.py Output
Best Practices
Library Selection
Working with openpyxl
Working with pandas

Read the full SKILL.md on GitHub

Files

SKILL.md and 3 other files in skills/sickn33/xlsx-official of aiskillstore/marketplace.

SKILL.md
LICENSE.txt
recalc.py
skill-report.json

Open the folder on GitHubat commit 44923f3

Used in 4 other repositories

We found 19 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 4 other GitHub owners. This page covers the copy in aiskillstore/marketplace, which our catalogue first saw on October 7, 2026.

Compare with similar skills

XLSX Official next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

XLSX Official compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
XLSX Official this skillaiskillstore/marketplace	433	4 repos	~2.7k	Automated safety check: Pass	Proprietary	yesterday
MarkitdownImCa0/just-laws	781	14 repos	~3.2k	Automated safety check: Notes	MIT	3 days ago
Data Table Managern8n-io/n8n	207k	—	~2.3k	Automated safety check: Pass	Custom licence	today
Docx4jplutext/docx4j	2.4k	—	~2.5k	Automated safety check: Pass	None	yesterday
Instrument Data To Allotropeaws-samples/amazon-bedrock-agents-healthcare-lifesciences	274	2 repos	~2.7k	Automated safety check: Pass	Apache-2.0	9 days ago
Cyber Pptcrazyykhllc-bit/CyberPPT	1.8k	—	~10k	Automated safety check: Pass	MIT	2 mo ago

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Questions about XLSX Official

What does XLSX Official do?

Unless otherwise stated by the user or existing template. An agent skill from aiskillstore/marketplace. XLSX Official is an agent skill from aiskillstore/marketplace.

When should I use XLSX Official?

XLSX Official fits situations like: tasks that involve Excel spreadsheets.

How do I install XLSX Official in Claude Code?

Run `npx skills add aiskillstore/marketplace --skill xlsx-official -a claude-code`. Or copy the skill folder (skills/sickn33/xlsx-official in aiskillstore/marketplace) into .claude/skills/xlsx-official in your project. Claude Code loads it when a task matches its description.

How do I install XLSX Official in Codex?

Run `npx skills add aiskillstore/marketplace --skill xlsx-official -a codex`. Or copy the skill folder (skills/sickn33/xlsx-official in aiskillstore/marketplace) into .agents/skills/xlsx-official in your project. Codex loads it when a task matches its description.

Can I use XLSX Official in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add aiskillstore/marketplace --skill xlsx-official -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/xlsx-official, .gemini/skills/xlsx-official, .github/skills/xlsx-official and .opencode/skills/xlsx-official in your project.

What does XLSX Official need to run?

Going by SKILL.md and its folder, XLSX Official needs Python for the scripts in its folder and the command-line tools its instructions call (python). Our summary lists: Python 3.

Does XLSX Official access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is XLSX Official safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does XLSX Official use?

XLSX Official carries a proprietary licence (from the LICENSE file in the skill folder). It is published on GitHub, but it is not open source: read the licence file before using or sharing it.

How many tokens does XLSX Official use?

About 2.7k tokens (SKILL.md is roughly 11k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to XLSX Official?

Skills that share tags, products or a category with XLSX Official: Markitdown (ImCa0/just-laws, 781 stars), Data Table Manager (n8n-io/n8n, 207k stars), Docx4j (plutext/docx4j, 2.4k stars) and Instrument Data To Allotrope (aws-samples/amazon-bedrock-agents-healthcare-lifesciences, 274 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains XLSX Official?

aiskillstore (a GitHub organization) maintains it in aiskillstore/marketplace, which has 433 GitHub stars. The repository holds 1,044 skills in this directory. The repository was last updated on October 10, 2026.

Source: aiskillstore/marketplace on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

XLSX Official

Install XLSX Official

Facts

At a glance

What it does

When your agent uses it

Example prompts

Requirements

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Files

Used in 4 other repositories

Compare with similar skills

Similar skills

Markitdown

Data Table Manager

Docx4j

Instrument Data To Allotrope

Cyber Ppt

Jev SEO

More from aiskillstore/marketplace

Code Stats

Data Processing

Doc Scanner

File Search

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Project Planner

Questions about XLSX Official

Install XLSX Official

Facts

At a glance

What it does

When your agent uses it

Example prompts

Requirements

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Files

Used in 4 other repositories

Compare with similar skills

Similar skills

More from aiskillstore/marketplace

Related

Questions about XLSX Official