What are Claude Code Skills?

Claude Code Skills are reusable prompt templates stored as markdown files in your project's .claude/skills/ directory. They let you codify best practices and common workflows into slash commands that Claude follows consistently.

How do I create a Claude Code Skill?

Create a markdown file in .claude/skills/ with instructions for Claude. The filename becomes the command name — for example, .claude/skills/code-review.md can be invoked with /code-review during a Claude Code session.

Can I share skills with my team?

Yes. Skills stored in .claude/skills/ can be committed to version control so every team member has access to the same standardized workflows. You can also organize skills into subdirectories by category.

What is the difference between project and global skills?

Project skills (.claude/skills/) are specific to the current project and are committed to git. Global skills (~/.claude/skills/) are personal skills available across all your projects.

xlsx-smart-extractor

New

Community RegistryProductivityby Diego Consolini · MIT

Extract and analyze large Excel workbooks (1MB-50MB+) with minimal token usage. Lossless extraction of all formulas, cell formatting, and complex table structures while achieving 20-100x token reduction through local extraction, semantic chunking, and intelligent caching. Perfect for compliance matrices, financial models, security audit logs, and data tables. Tested with 287K cells and 15K formulas.

Install & Usage

Create the skills directory

mkdir -p .claude/skills

Download the skill file

mkdir -p .claude/skills && curl -o .claude/skills/xlsx-smart-extractor.md https://raw.githubusercontent.com/diegocconsolini/ClaudeSkillCollection/main/SKILL.md

Invoke in Claude Code

/xlsx-smart-extractor

View source on GitHub

securitytestingexcelxlsxspreadsheetextractiontoken-optimizationcompliance-matrix

Frequently Asked Questions

What is xlsx-smart-extractor?

How to install xlsx-smart-extractor?

To install xlsx-smart-extractor, create the .claude/skills directory in your project, then run the curl command to download the skill file. Once installed, invoke it in Claude Code with /xlsx-smart-extractor.

What is xlsx-smart-extractor best for?

xlsx-smart-extractor is a community categorized under Productivity. It is designed for: security, testing, excel, xlsx, spreadsheet, extraction, token-optimization, compliance-matrix. Created by Diego Consolini.