What are Claude Skills?
Quick answer: Claude Skills are reusable instruction packs you give Claude: a folder with a short instruction file (and optional scripts or reference material) that Claude loads exactly when the task matches. Instead of re-explaining your report format or review checklist in every chat, you define it once as a skill, and Claude applies it on demand.
The idea in one minute
Out of the box, an AI assistant knows the world but not your workplace: your report template, your tone rules, your definition of done. A skill captures one of those procedures as instructions Claude reads only when relevant, so it does not clutter every conversation. Think of it as onboarding notes for your AI: written once, applied every time, shareable with your whole team.
What a skill looks like
A skill is deliberately simple: a folder with a markdown instruction file describing when it applies and how to do the task, optionally alongside scripts, templates or reference documents. Because it is plain files, it can be version-controlled, reviewed and improved like any other team asset. Skills work across Claude's surfaces, including the Claude apps and Claude Code.
Why this matters for teams, not just tinkerers
Prompting skill lives in individuals; skills move it into the organisation. The best prompt your best analyst ever wrote becomes something every analyst invokes. Quality becomes consistent, onboarding faster, and your AI usage stops depending on who happens to be good at prompting. Building a small library of team skills is one of the highest-leverage AI moves an organisation can make in 2026.
Frequently asked questions
Do I need to code to create a Claude skill?
No. The core of a skill is written instructions in plain language. Technical teams can add scripts, but a well-written procedure alone already makes a useful skill.
How are skills different from custom GPTs or projects?
Same family of idea, different execution: a skill is a modular, file-based instruction pack loaded on demand, so many skills can serve one assistant, be shared through version control, and travel across Claude's apps and Claude Code.
Where do we start as a team?
Pick three procedures you repeat weekly, write each as a one-page instruction, test, refine, share. We run exactly this exercise, on your real procedures, in our custom assistants and enterprise bots course.
Turn reading into capability
Written by the training team behind 75,000+ professionals across 140+ countries. More: the full corporate AI catalogue · What is ICP-FAI? · real class feedback.