Complete Guide to Claude Skills (2026)
Everything you need to know about Claude skills — what they are, how they work, how to install them, and how to build your own from scratch.
What It Is
Claude skills are installable capability modules that teach Claude how to perform specific, repeatable tasks to a professional standard. Each skill is a SKILL.md file containing expert instructions, output standards, and templates.
How to Use It
- 1Step 1: Choose your platform — Claude Code (CLI) or Cowork (desktop app)
- 2Step 2: Install a plugin bundle or individual skills from the marketplace
- 3Step 3: Invoke a skill by asking Claude to use it, or via a /slash command
- 4Step 4: Provide your input (files, data, context) and let Claude execute
- 5Step 5: Review the output — files, reports, code, or content — and iterate
Example Skills
Say 'Create a presentation about X' — Claude reads the PPTX skill and builds a .pptx file
Upload a CSV and say 'Analyze this' — Claude applies the data skill to explore, visualize, and report
Say 'Write a blog post about Y' — Claude uses the content-creation skill with SEO best practices built in
Frequently Asked Questions
What are Claude skills?
Skills are instruction bundles (SKILL.md files) that give Claude deep expertise in a specific task — like creating PowerPoint files, writing SQL, reviewing contracts, or planning sprints.
How are Claude skills different from prompts?
A prompt is a one-off instruction. A skill is a reusable capability module with expert-level instructions, templates, quality standards, and tool integrations baked in.
Do I need to be technical to use Claude skills?
No — in Cowork mode you install skills like apps and use them through natural conversation.
Can I use multiple skills at once?
Yes — Claude can combine skills in a single task.