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AI agent skills for spreadsheets and Excel

Spreadsheet skills are mostly about fidelity: preserving formulas rather than flattening them to values, keeping number formats, not silently coercing a leading zero away. A capable one reads an existing workbook's structure before writing to it, which is what stops the agent from destroying a sheet it did not fully parse. Large files are the usual limit worth checking before you rely on one.

People land here searching for “claude code excel skill”, “agent skill for spreadsheets”, “xlsx skill”.

24 spreadsheets and Excel skills Refine in search →

How to install a spreadsheets and Excel skill

  1. Compare the skills. Read the spreadsheets and Excel skills below — each page shows the full SKILL.md, its safety verdict, and the capabilities it declares.
  2. Install it. Run npx skillmds@latest add <owner>/<name>. The CLI writes the skill into every agent directory it detects, or use --agent to pin one.
  3. Use it. Restart your agent. It loads the skill on demand the next time you ask for something that matches — you do not have to name the skill.

What makes a good spreadsheets and Excel skill?

Spreadsheet skills are mostly about fidelity: preserving formulas rather than flattening them to values, keeping number formats, not silently coercing a leading zero away. A capable one reads an existing workbook's structure before writing to it, which is what stops the agent from destroying a sheet it did not fully parse. Large files are the usual limit worth checking before you rely on one.

Every skill listed here is a plain SKILL.md file in the format Anthropic documents for Agent Skills, read unchanged by Cursor, OpenAI Codex and 60+ agents. Each passes a safety review before it is publicly listed; the verdict and declared capabilities are on every skill's page.

Frequently asked questions

What is an agent skill for spreadsheets and Excel?

Spreadsheet skills are mostly about fidelity: preserving formulas rather than flattening them to values, keeping number formats, not silently coercing a leading zero away. A capable one reads an existing workbook's structure before writing to it, which is what stops the agent from destroying a sheet it did not fully parse. Large files are the usual limit worth checking before you rely on one.

Will a spreadsheet skill preserve my formulas?

The well-built ones do, and say so. Naive implementations read values only and write back a workbook with every formula replaced by its last computed result — which is why it is worth checking a skill's description on exactly this point before pointing it at a file you care about.

Which agents can use these spreadsheets and Excel skills?

Any agent that reads SKILL.md files: Claude Code, Claude.ai, Cursor, OpenAI Codex, Windsurf, OpenCode and 60+ others. The format is not vendor-specific, so the same file works everywhere — each agent just keeps its skills in a different directory, listed at /agents.

Are these spreadsheets and Excel skills free?

Yes. Searching, reading and installing skills on SkillMD is free and needs no account. Individual skills carry their own licence, shown on each skill's page.