XLSX Spreadsheet Toolkit
XiaomiMiMo/MiMo-Code
Builds, edits, cleans, recalculates and reads Excel workbooks and CSV files with openpyxl and pandas, plus LibreOffice for recalculation and PDF export.
Creates, edits and analyzes spreadsheets (.xlsx, .xlsm, .csv, .tsv) with openpyxl and pandas, writing live formulas and recalculating to confirm zero formula errors.
Install Excel Spreadsheet Creation and Editing
$ npx skills add anthropics/skills --skill xlsx -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install anthropics/skills xlsx --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/anthropics/skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/xlsx .claude/skills/xlsx && rm -rf skills-srcUse ~/.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/
Install the "xlsx" agent skill from https://github.com/anthropics/skills/tree/main/skills/xlsx into .claude/skills/xlsx/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "xlsx", 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 install https://github.com/anthropics/skills/tree/main/skills/xlsxType 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.
$ npx skills add anthropics/skills --skill xlsx -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install anthropics/skills xlsx --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/anthropics/skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/xlsx .agents/skills/xlsx && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "xlsx" agent skill from https://github.com/anthropics/skills/tree/main/skills/xlsx into .agents/skills/xlsx/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "xlsx", 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.
$ npx skills add anthropics/skills --skill xlsx -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install anthropics/skills xlsx --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/anthropics/skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/xlsx .cursor/skills/xlsx && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "xlsx" agent skill from https://github.com/anthropics/skills/tree/main/skills/xlsx into .cursor/skills/xlsx/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "xlsx", 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 https://github.com/anthropics/skills.git --path skills/xlsx--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add anthropics/skills --skill xlsx -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install anthropics/skills xlsx --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/anthropics/skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/xlsx .gemini/skills/xlsx && rm -rf skills-srcUse ~/.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/
Install the "xlsx" agent skill from https://github.com/anthropics/skills/tree/main/skills/xlsx into .gemini/skills/xlsx/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "xlsx", 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.
$ gh skill install anthropics/skills xlsxInstalls 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).
$ npx skills add anthropics/skills --skill xlsx -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/anthropics/skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/xlsx .github/skills/xlsx && rm -rf skills-srcUse ~/.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/
Install the "xlsx" agent skill from https://github.com/anthropics/skills/tree/main/skills/xlsx into .github/skills/xlsx/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "xlsx", 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.
$ npx skills add anthropics/skills --skill xlsx -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install anthropics/skills xlsx --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/anthropics/skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/xlsx .opencode/skills/xlsx && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "xlsx" agent skill from https://github.com/anthropics/skills/tree/main/skills/xlsx into .opencode/skills/xlsx/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "xlsx", 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- GitHub stars
- 180k
- Used in
- 4 other repos
- Token cost
- ~2.1k tokens
- SKILL.md length
- 1,062 words
- Files
- 58 (incl. scripts)
- Skills in repo
- 16
- Repo updated
- First seen
- Licence
- Proprietary
At a glance
Creates, edits and analyzes spreadsheets (.xlsx, .xlsm, .csv, .tsv) with openpyxl and pandas, writing live formulas and recalculating to confirm zero formula errors.
- Fixing formulas or formatting in an existing .xlsx file
- SKILL.md covers Requirements for every output, Recalculate (mandatory…, Choosing formulas that survive… and openpyxl gotchas, plus 2 more sections
- Runs Python scripts from its folder; calls pip, python and markitdown
- Building a financial model workbook with live formulas
What it does
Spreadsheet files, whether being opened, fixed, built from scratch or converted between tabular formats, are handled by picking a tool per job: openpyxl for creating or editing with formulas and formatting, pandas for bulk reads and writes, markitdown for a quick look at each sheet, and two load_workbook passes to read a model's formulas and values. These libraries are described as preinstalled.
Output requirements are strict: a professional font such as Arial or Times New Roman unless told otherwise, zero formula errors as reported by recalc.py, formulas rather than hardcoded results, literal compliance with the user's spec, and every assumption or hardcoded number documented where a reader will see it, with real sources cited. A workbook built for someone to fill in gets a short legend and one example row, while edits to an existing file must follow its conventions and touch only its designated input cells.
Recalculation is mandatory when formulas exist, since openpyxl stores them without cached values. The skill is not for Word reports, HTML, standalone scripts, database pipelines or Google Sheets API work, and its bundled files carry a proprietary licence.
When your agent uses it
- Fixing formulas or formatting in an existing .xlsx file
- Building a financial model workbook with live formulas
- Cleaning a messy CSV into a proper spreadsheet
- Converting between .csv, .tsv and .xlsx
Example prompts
- “Add a totals column with SUM formulas to the Q3 sheet in budget.xlsx.”
- “Clean up sales.csv, fix the misplaced headers and save it as a formatted spreadsheet.”
- “Build a three-statement model workbook with the assumptions listed on a separate tab.”
- “Recalculate the workbook and tell me if any cell shows a formula error.”
Requirements
- Python with openpyxl, pandas and markitdown, which the skill treats as preinstalled
What it can do on your machine
Read from SKILL.md and the folder at commit 683bc88. 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 14 files in scripts/ (Python, from the files we listed), which the agent can run.
Shell commands in SKILL.md call:
pippythonmarkitdown
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use pip, which can reach the network depending on how they are called.
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
Excel Spreadsheet Creation and Editing loads about 2.1k tokens when it runs. Until then it costs about 238 tokens; SKILL.md has 1,062 words of instructions outside code blocks.
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); the scripts in this folder 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 1,062 words (~2,136 tokens).
“openpyxl writes formulas as strings with no cached values. Until you recalculate, every formula cell reads back as None to anything reading cached values — pandas, load_workbook(data_only=True), and most previewers.”
- name
- xlsx
- license
- Proprietary. LICENSE.txt has complete terms
Files
SKILL.md and 57 other files (scripts) in skills/xlsx of anthropics/skills.
- SKILL.md
- LICENSE.txt
- scripts/office/helpers/__init__.py
- scripts/office/helpers/pptx_chart.py
- scripts/office/helpers/pptx_slide.py
- scripts/office/helpers/pptx_theme.py
- scripts/office/schemas/ISO-IEC29500-4_2016/dml-chart.xsd
- scripts/office/schemas/ISO-IEC29500-4_2016/dml-chartDrawing.xsd
- scripts/office/schemas/ISO-IEC29500-4_2016/dml-diagram.xsd
- scripts/office/schemas/ISO-IEC29500-4_2016/dml-lockedCanvas.xsd
- scripts/office/schemas/ISO-IEC29500-4_2016/dml-main.xsd
- scripts/office/schemas/ISO-IEC29500-4_2016/dml-picture.xsd
- scripts/office/schemas/ISO-IEC29500-4_2016/dml-spreadsheetDrawing.xsd
- scripts/office/schemas/ISO-IEC29500-4_2016/dml-wordprocessingDrawing.xsd
- scripts/office/schemas/ISO-IEC29500-4_2016/pml.xsd
- scripts/office/schemas/ISO-IEC29500-4_2016/shared-additionalCharacteristics.xsd
- … and 42 more
Open the folder on GitHubat commit 683bc88
Used in 4 other repositories
We found 4 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 4 other GitHub owners. This page covers the copy in anthropics/skills, which our catalogue first saw on October 7, 2026.
Compare with similar skills
Excel Spreadsheet Creation and Editing 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.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Excel Spreadsheet Creation and Editing this skillanthropics/skills | 180k | 4 repos | ~2.1k | Automated safety check: Pass | Proprietary | |
| XLSX Spreadsheet ToolkitXiaomiMiMo/MiMo-Code | 14k | — | ~2.9k | Automated safety check: Pass | Apache-2.0 | |
| CSV and Excel MergerOneWave-AI/claude-skills | 328 | — | ~1.6k | Automated safety check: Pass | MIT | |
| BiSheng XLSX Workbook Builderdataelement/bisheng | 12k | — | ~1.7k | Automated safety check: Pass | Apache-2.0 | |
| Excel Spreadsheet Builderagentscope-ai/QwenPaw | 36k | — | ~1.8k | Automated safety check: Pass | Proprietary | |
| Create Spreadsheettheexperiencecompany/gaia | 308 | — | ~802 | Automated safety check: Pass | Custom licence |
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Related
Categories
Questions about Excel Spreadsheet Creation and Editing
What does Excel Spreadsheet Creation and Editing do?
Creates, edits and analyzes spreadsheets (.xlsx, .xlsm, .csv, .tsv) with openpyxl and pandas, writing live formulas and recalculating to confirm zero formula errors. Spreadsheet files, whether being opened, fixed, built from scratch or converted between tabular formats, are handled by picking a tool per job: openpyxl for creating or editing with formulas and formatting, pandas for bulk reads and writes, markitdown for a quick look at each sheet, and two load_workbook passes to read a model's formulas and values. These libraries are described as preinstalled.
When should I use Excel Spreadsheet Creation and Editing?
Excel Spreadsheet Creation and Editing fits situations like: fixing formulas or formatting in an existing .xlsx file; building a financial model workbook with live formulas; cleaning a messy CSV into a proper spreadsheet; converting between .csv, .tsv and .xlsx.
How do I install Excel Spreadsheet Creation and Editing in Claude Code?
Run `npx skills add anthropics/skills --skill xlsx -a claude-code`. Or copy the skill folder (skills/xlsx in anthropics/skills) into .claude/skills/xlsx in your project. Claude Code loads it when a task matches its description.
How do I install Excel Spreadsheet Creation and Editing in Codex?
Run `npx skills add anthropics/skills --skill xlsx -a codex`. Or copy the skill folder (skills/xlsx in anthropics/skills) into .agents/skills/xlsx in your project. Codex loads it when a task matches its description.
Can I use Excel Spreadsheet Creation and Editing 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 anthropics/skills --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 Excel Spreadsheet Creation and Editing need to run?
Going by SKILL.md and its folder, Excel Spreadsheet Creation and Editing needs Python for the scripts in its folder and the command-line tools its instructions call (pip, python and markitdown). Our summary lists: Python with openpyxl, pandas and markitdown, which the skill treats as preinstalled.
Does Excel Spreadsheet Creation and Editing access the network?
SKILL.md contains no URLs. Its commands use pip, which can reach the network depending on how they are called. This is read from the text; nothing was executed.
Is Excel Spreadsheet Creation and Editing 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. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.
What licence does Excel Spreadsheet Creation and Editing use?
Excel Spreadsheet Creation and Editing carries a proprietary licence (declared in SKILL.md). It is published on GitHub, but it is not open source: read the licence file before using or sharing it.
How many tokens does Excel Spreadsheet Creation and Editing use?
About 2.1k tokens (SKILL.md is roughly 8.5k 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 Excel Spreadsheet Creation and Editing?
Skills that share tags, products or a category with Excel Spreadsheet Creation and Editing: XLSX Spreadsheet Toolkit (XiaomiMiMo/MiMo-Code, 14k stars), CSV and Excel Merger (OneWave-AI/claude-skills, 328 stars), BiSheng XLSX Workbook Builder (dataelement/bisheng, 12k stars) and Excel Spreadsheet Builder (agentscope-ai/QwenPaw, 36k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Excel Spreadsheet Creation and Editing?
anthropics (a GitHub organization, an official publisher) maintains it in anthropics/skills, which has 180,048 GitHub stars. The repository holds 16 skills in this directory. The repository was last updated on October 8, 2026.
Source: anthropics/skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.