xlsx SKILL.md skillA
xlsx from anthropics/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add anthropics/skills/xlsx@git:20260717.fa0fa64Pins git:20260717.fa0fa64 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- anthropics/skills
- Path
skills/xlsx/SKILL.md- Versions recorded
- 3
- Latest version
- git:20260717.fa0fa64, committed Jul 17, 2026
- First version recorded
- Dec 1, 2025
- Size
- 8,598 bytes
- Repository stars
- 182,395
- License
- none declared
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…
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
# XLSX creation, editing, and analysis | Task | Approach | |---|---| | **Create** or **edit** with formulas/formatting | `openpyxl` — see gotchas below | | **Bulk data** in or out | `pandas` (`read_excel`, `to_excel`) | | **Quick look** at a sheet | `markitdown file.xlsx` — `## SheetName` per sheet; reads `.xlsm` too. No cell coordinates, so don't plan edits from it | | **Read** a model (formulas *and* values) | two `load_workbook` passes — see gotchas | > `openpyxl`, `pandas`, and `markitdown` are preinstalled — do not run `pip install` first; write the script and import directly. Only if an import fails (or the `markitdown` command is missing): `pip install` the missing package. > Script paths below are relative to this skill's directory. ## Requirements for every output - **Professional font** (Arial, Times New Roman) throughout, unless the user says otherwise. - **Zero formula errors.** Never ship while `recalc.py` reports `errors_found`. If you think an error predates you, prove it: load the *original* with `data_only=True` and look at that cell. An error you introduced looks exactly like one you inherited. …
Read the whole file at its exact version.
How to install
mdr add anthropics/skills/xlsx@sha256:6712b39718fe8150The line at the top of this page pins the label git:20260717.fa0fa64, 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.
[](https://markdownregistry.com/a/art_pze7rppj2yulxgcf)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Dec 1, 2025 and Jul 17, 2026, about one every 114 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260717.fa0fa64 latest | 2026-07-17 | fa0fa64 | 8,598 B | A | view · diff |
| git:20260204.4e6907a | 2026-02-04 | 4e6907a | 11,463 B | A | view · diff |
| git:20251201.ef74077 | 2025-12-01 | ef74077 | 10,632 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (8598 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
anthropics/skills · 182,395 stars · license none declared · pushed 2026-10-09 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_pze7rppj2yulxgcf GET https://markdownregistry.com/api/v1/resolve?ref=anthropics/skills/xlsx GET https://markdownregistry.com/api/v1/blob/6712b39718fe815054abca9c3ee72f989613e6f771c8a5c58f30a65a6c905622
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.
More from anthropics/skills
Every file in anthropics/skills