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xlsx

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, .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.

Open GitHub Hosted ai-catalog.json

Note Not publisher verified. The validation score measures ARD metadata quality, not safety or trust.

Validation report

Validation score measures ARD metadata completeness, not safety, trust, or publisher verification. Score: 60/100.

warning
representative-queries
Missing representative queries.
warning
capabilities
Missing capability labels.
warning
tags
Missing tags.
info
trust-manifest
TrustManifest not supplied; this is informational and not a safety score.

CatalogEntry JSONstandard ARD fields only

{
  "identifier": "urn:air:github.com:anthropics:skills:skill:xlsx",
  "displayName": "xlsx",
  "type": "application/ai-skill",
  "url": "https://raw.githubusercontent.com/anthropics/skills/57546260929473d4e0d1c1bb75297be2fdfa1949/skills/xlsx/SKILL.md",
  "description": "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, .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.",
  "updatedAt": "2026-06-24T08:07:15.035Z"
}

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