xlsx
xlsx is an agent skill published by anthropic, listed under deploy & operate. It lives in the anthropics/skills repository, which has 183,845 GitHub stars; we last read it on 2026-09-16.
This skill handles spreadsheet files, including .xlsx, .xlsm, .xltx, .csv, and .tsv, for tasks such as opening, reading, editing, and converting these files. It triggers when a user mentions a specific spreadsheet file and wants actions performed on it or new spreadsheets created from it.
Install
skills is a generic installer for any repository of Claude agent skills -- it reads anthropics/skills’s own structure rather than assuming one, the same way this page reads the skill’s own SKILL.md rather than assuming a format.
npx skills add anthropics/skills
Maintenance
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, .xltx, .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 \"the xlsx in my downloads\") — and wants something done to it or produced from it. Also trigger for cleaning or restructuring messy tabular data files (malformed rows, misplaced headers, junk data) into proper spreadsheets. The deliverable must be a spreadsheet file. Do NOT trigger when the primary deliverable is a Word document, HTML report, standalone Python script, database pipeline, or Google Sheets API integration, even if tabular data is involved.
xlsx compared with similar skills
| Skill | Publisher | What it does | Repo stars | Last update |
|---|---|---|---|---|
| xlsx (this page) | anthropic | Use this skill any time a spreadsheet file is the primary input or output. This means any task where the user… | 183,845 | 2026-10-09 |
| internal-comms(same repository) | anthropic | A set of resources to help me write all kinds of internal communications, using the formats that my company l… | 183,845 | 2026-10-09 |
| ci-cd-and-automation | addyosmani | Automates CI/CD pipeline setup. Use when setting up or modifying build and deployment pipelines. Use when you… | 110,611 | 2026-10-13 |
| observability-and-instrumentation | addyosmani | Instruments code so production behavior is visible and diagnosable. Use when adding logging, metrics, tracing… | 110,611 | 2026-10-13 |
| agent-platform-endpoint-management | Manages Agent Platform serving endpoints. Use when you need to create, list, describe, update, or delete serv… | 21,580 | 2026-10-25 | |
| agent-platform-model-registry | Agent Platform Model Registry Management. Use when you need to upload, list, describe, update, or delete mach… | 21,580 | 2026-10-25 | |
| application-design-center-design-deploy | Processes GCP infrastructure design and deployment workflows within Application Design Center (ADC). Use when… | 21,580 | 2026-10-25 |
Skills from the same repository first, then others for this job by repository stars. Figures are from each repository when we last read it.
Common questions about xlsx
- What does xlsx do?
- This skill handles spreadsheet files, including .xlsx, .xlsm, .xltx, .csv, and .tsv, for tasks such as opening, reading, editing, and converting these files. It triggers when a user mentions a specific spreadsheet file and wants actions performed on it or new spreadsheets created from it.
- How do I install xlsx?
- Run npx skills add anthropics/skills. The skills installer reads the repository’s own structure, so it works for any repository of agent skills.
- Who publishes xlsx?
- anthropic.
- Is xlsx maintained, and what licence does it use?
- Its repository has 183,845 GitHub stars and its state in our directory is listed. Its last commit we recorded was on 2026-10-09. We did not find a declared licence, so check the repository before you rely on it.
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