A skill your agent uses whenever the user wants to do anything with Excel spreadsheet files (.xlsx, .xls, .csv).

No licenceAuto-check passedDocuments & Office

Install XLSX

skills CLI
$ npx skills add mindscale-noah/MindMemOS --skill xlsx -a claude-code

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

GitHub CLI
$ gh skill install mindscale-noah/MindMemOS xlsx --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/mindscale-noah/MindMemOS.git skills-src && mkdir -p .claude/skills && cp -r skills-src/resources/skill_evolve/spreadsheetbench_init_skill/xlsx .claude/skills/xlsx && 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/

Facts

Skill name
xlsx
GitHub stars
1k
Token cost
~306 tokens
SKILL.md length
75 words
Files
1
Skills in repo
2
Repo updated
First seen
Licence
None found

At a glance

A skill your agent uses whenever the user wants to do anything with Excel spreadsheet files (.xlsx, .xls, .csv).

  • The user wants to do anything with Excel spreadsheet files (.xlsx
  • SKILL.md covers Quick Start, Reading Data with pandas and Common Pitfalls
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
  • Tasks that involve Excel spreadsheets

What it does

XLSX is an agent skill from mindscale-noah/MindMemOS. Use this skill whenever the user wants to do anything with Excel spreadsheet files (.xlsx, .xls, .csv). This includes reading data, writing formulas, manipulating cells, formatting, filtering, creating charts, pivot tables, and any spreadsheet automation tasks.

Its SKILL.md is about 310 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Documents & Office, covering Excel spreadsheets. It works with Microsoft Excel.

When your agent uses it

  • The user wants to do anything with Excel spreadsheet files (.xlsx
  • Tasks that involve Excel spreadsheets

Example prompts

  • “/xlsx”

Requirements

  • Python 3

What it can do on your machine

Read from SKILL.md and the folder at commit 186db4a. 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

    No scripts in the folder and no shell commands in SKILL.md (its code samples are 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 loads about 306 tokens when it runs. Until then it costs about 67 tokens; SKILL.md has 75 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~67
When it runs · the whole SKILL.md, loaded when a task matches
~306

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

Without a licence we can't republish the file, so here is its outline and opening line. It has 75 words (~306 tokens).

“Use openpyxl to read and write .xlsx files.”

— opening of SKILL.md by mindscale-noah
name
xlsx

Read the full SKILL.md on GitHub

Files

Just SKILL.md in resources/skill_evolve/spreadsheetbench_init_skill/xlsx of mindscale-noah/MindMemOS.

Open the folder on GitHubat commit 186db4a

Compare with similar skills

XLSX 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 compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
XLSX this skillmindscale-noah/MindMemOS1k—~306Automated safety check: PassNone
MarkitdownImCa0/just-laws78114 repos~3.2kAutomated safety check: NotesMIT
Docx4jplutext/docx4j2.4k—~2.5kAutomated safety check: PassNone
Instrument Data To Allotropeaws-samples/amazon-bedrock-agents-healthcare-lifesciences2742 repos~2.7kAutomated safety check: PassApache-2.0
Cyber Pptcrazyykhllc-bit/CyberPPT1.8k—~10kAutomated safety check: PassMIT
Markitshift-labs-ai/markit1.3k—~299Automated safety check: PassMIT

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Works with

Questions about XLSX

What does XLSX do?

A skill your agent uses whenever the user wants to do anything with Excel spreadsheet files (.xlsx, .xls, .csv). XLSX is an agent skill from mindscale-noah/MindMemOS.csv).

When should I use XLSX?

XLSX fits situations like: the user wants to do anything with Excel spreadsheet files (.xlsx; tasks that involve Excel spreadsheets.

How do I install XLSX in Claude Code?

Run `npx skills add mindscale-noah/MindMemOS --skill xlsx -a claude-code`. Or copy the skill folder (resources/skill_evolve/spreadsheetbench_init_skill/xlsx in mindscale-noah/MindMemOS) into .claude/skills/xlsx in your project. Claude Code loads it when a task matches its description.

How do I install XLSX in Codex?

Run `npx skills add mindscale-noah/MindMemOS --skill xlsx -a codex`. Or copy the skill folder (resources/skill_evolve/spreadsheetbench_init_skill/xlsx in mindscale-noah/MindMemOS) into .agents/skills/xlsx in your project. Codex loads it when a task matches its description.

Can I use XLSX 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 mindscale-noah/MindMemOS --skill xlsx -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, .gemini/skills/xlsx, .github/skills/xlsx and .opencode/skills/xlsx in your project.

What does XLSX need to run?

SKILL.md names no scripts, command-line tools or credentials: XLSX is instructions for the agent only. Our summary lists: Python 3.

Does XLSX 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 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 use?

No licence was found for XLSX or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does XLSX use?

About 306 tokens (SKILL.md is roughly 1.2k 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?

Skills that share tags, products or a category with XLSX: Markitdown (ImCa0/just-laws, 781 stars), Docx4j (plutext/docx4j, 2.4k stars), Instrument Data To Allotrope (aws-samples/amazon-bedrock-agents-healthcare-lifesciences, 274 stars) and Cyber Ppt (crazyykhllc-bit/CyberPPT, 1.8k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains XLSX?

mindscale-noah (a GitHub organization) maintains it in mindscale-noah/MindMemOS, which has 1,003 GitHub stars. The repository holds 2 skills in this directory. The repository was last updated on September 29, 2026.

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