/spreadsheets
Use when creating, reading, or fixing spreadsheets (.xlsx, .csv). Covers formulas, formatting, charts, data cleaning, and handling the messy real-world files that are not actually tabular.
$ npx -y skills add nimadorostkar/Claude-Skills-collection --skill spreadsheets --agent claude-codeHow it fires
How this skill gets triggered: by you, by Claude, or both.
- Fires itselfAuto-invocation. Claude auto-loads it when your prompt matches the work.
- You can call itInvoke it directly when you want it.
- Slash command
/spreadsheets
Context preview
The summary Claude sees to decide when to auto-load this skill.
Use when creating, reading, or fixing spreadsheets (.xlsx, .csv). Covers formulas, formatting, charts, data cleaning, and handling the messy real-world files that are not actually tabular.
A curated library of 137 production-grade skills for Claude and other AI coding agents. Every skill follows one structure, speaks with one voice, and earns its place by changing what the agent does.
Repo: nimadorostkar/Claude-Skills-collection
Other skills on claude-skills-collection.
- /agent-instructions
Use when writing project instructions for a coding agent (CLAUDE.md, AGENTS.md, or equivalent). Covers what belongs in them, what does not, structure, and keeping them accurate as the project changes.
Open skill - /agent-memory
Use when an agent needs state that survives a session or a context compaction. Covers what to persist, file-based memory, structuring notes for retrieval, and preventing memory from becoming stale.
Open skill - /hooks
Use when automating agent behavior with lifecycle hooks. Covers hook events, deterministic enforcement of rules the model should not be trusted to remember, and avoiding hooks that make an agent unusable.
Open skill - /plugin-development
Use when packaging skills, commands, hooks, and MCP servers into a distributable plugin. Covers manifest structure, bundling, versioning, testing, and distribution through a marketplace.
Open skill - /skill-authoring
Use when writing a new skill for an AI agent. Covers scoping, description writing for reliable triggering, progressive disclosure, and the difference between a skill and a prompt.
Open skill - /skill-review
Use when reviewing or improving an existing agent skill. Covers triggering accuracy, content quality, redundancy with the base model, and measuring whether the skill actually changes behavior.
Open skill