Documents & filesOfficial · Anthropic

xlsx

Spreadsheets, formulas and charts

High trustView source ↗

Install xlsx

npx skills add anthropics/skills --skill xlsx

Skills install into ~/.claude/skills/ and load on demand. Other SKILL.md tools (Cursor, Codex, Gemini CLI) use the same files.

What it does

Build and edit Excel workbooks: formulas, charts, pivot tables and data validation. Official Anthropic document skill for financial models and data reports.

  • financial models
  • data analysis
  • reporting

Trust & safety

Score 95/100 · High trust
Verified Runs code Local only
  • Published by Anthropic in the official skills repo.
  • Manually reviewed and verified by Loadout.
  • No network access — runs locally only.
  • Ships executable scripts — read them before first run.

Heuristic signal based on provenance and capabilities — not a security audit. Always review a skill’s SKILL.md and scripts before first run.

Scan any SKILL.md yourself →

Works with

  • Claude Code
  • Claude.ai
  • Claude API
  • Cursor
  • Codex CLI
  • Gemini CLI

Related skills

FAQ — xlsx skill

  • What does the xlsx skill do?

    Build and edit Excel workbooks: formulas, charts, pivot tables and data validation. Official Anthropic document skill for financial models and data reports.

  • How do I install the xlsx skill?

    Run: npx skills add anthropics/skills --skill xlsx. Or git clone the repo into ~/.claude/skills/. Skills load automatically when relevant — no extra config.

  • Which agents support xlsx?

    It reads the SKILL.md standard, so it works with Claude Code, Claude.ai, Claude API, Cursor, Codex CLI, Gemini CLI.

  • Is the xlsx skill safe to run?

    High trust (trust score 95/100). Published by Anthropic in the official skills repo. Manually reviewed and verified by Loadout. No network access — runs locally only. Ships executable scripts — read them before first run.