What Are Claude Skills? A Guide for Business Teams

Claude Skills are folders of instructions, scripts and resources that Claude loads only when a task needs them. Each skill teaches Claude how to do one job, such as writing a report in your format or checking content against your style guide. For a business, a skill is your best person's method, written once and used by everyone.

What are Claude Skills?

Claude Skills are packaged instructions that teach Claude how to perform a specific task. Anthropic describes them as "folders that include instructions, scripts, and resources that Claude can load when needed". A skill might cover writing a proposal, formatting a report, analysing a spreadsheet the way your finance team does, or checking an article before publication.

Anthropic launched Skills on 16 October 2025, for use across the Claude apps, Claude Code and the API. In December 2025 it added organisation-wide management, so administrators can provide skills to a whole team, and published the format as an open standard.

The idea is simple, and that is its strength. Instead of pasting the same long instructions into every chat, you write them once as a skill. Claude then uses the skill whenever a request matches what it is for.

How do Claude Skills work?

Each skill has a short name and description that Claude reads first. When a request matches a description, Claude loads the full instructions and any supporting files. Otherwise it ignores the skill. This "load only when relevant" design means a team can install many skills without overwhelming Claude's working memory.

According to Anthropic's help documentation, every skill is a folder containing at least a skill.md file. The file opens with two fields: a name of up to 64 characters, and a description of up to 200 characters saying what the skill does and when to use it. Below that sit the instructions themselves, in plain Markdown. The folder can also hold examples, templates and scripts.

The description does most of the work. Claude decides whether to use a skill from that one line, so a vague description means the skill rarely fires. Anthropic advises keeping each skill focused on one workflow and including example inputs and outputs.

Availability changes, so check before relying on it. In October 2026, Anthropic's help centre listed Skills on the Free, Pro, Max, Team and Enterprise plans, with code execution required.

What can a business use Claude Skills for?

A business can use skills for any repeatable job with a known method: proposals, reports, content checks, data analysis, client onboarding steps, brand-compliant documents and research briefs. The best candidates are tasks done often, where the quality depends on knowing how your company does it.

Good first skills tend to share three features:

• Frequent. Done weekly or more, so the effort of writing the skill pays back.
• Method-dependent. The difference between good and average output is knowing your way of doing it.
• Checkable. You can tell quickly whether the output followed the method.

Examples from marketing and sales work include a skill that writes blog articles to your structure and evidence standard, one that drafts follow-up emails from call notes in your voice, and one that audits a web page against a checklist. Our own agency runs dozens of these; the skill library shows the range of open skills available.

There is a people reason too. According to BCG's 2025 AI at Work survey, only one-third of employees say they have been properly trained in AI. A skill puts the expert method inside the tool, so people get good results without needing to be expert prompt writers.

How are Claude Skills different from prompts and Projects?

Prompts are one-off instructions that do not persist. Projects give Claude background knowledge for a body of work. Skills teach Claude how to do a task, and travel across conversations and Projects. MCP, the Model Context Protocol, connects Claude to data and tools. Each solves a different problem.

Anthropic's own comparison is the clearest summary. Prompts "don't persist across conversations". Projects provide persistent background knowledge, while skills teach Claude how to do things. And "if you find yourself copying the same instructions across multiple Projects, that's a signal to create a skill instead". On connections: "MCP connects Claude to data; Skills teach Claude what to do with that data."

The guide to comparison of skills and Projects goes into when to use each.

Do Claude Skills work outside Claude?

Increasingly, yes. In December 2025 Anthropic published Agent Skills as an open standard, with the specification at agentskills.io, so the same skill format can be used by other AI tools that adopt it. That matters for businesses whose staff use more than one assistant.

Portability is worth caring about. A skill encodes how your business does something, which is valuable intellectual property. Keeping it in a standard, readable format, in files your business owns, means you are not locked into one vendor. The guide to the open standard covers what it means for ChatGPT and Gemini users.

How should a business start with Claude Skills?

Pick one frequent job, ask the person who does it best to walk through their method, and write it up as a skill with a clear description and examples. Test it on real requests, refine the description until it triggers reliably, then share it with the team and name an owner to keep it current.

A first-skill checklist:

1. Choose the job. Frequent, method-dependent, checkable.
2. Capture the method. Steps, checks and what good looks like, in your best person's words.
3. Write the description carefully. What the skill does and when to use it, in under 200 characters.
4. Add examples. One good input and output teaches more than a page of rules.
5. Test and refine. Try requests that should and should not trigger it.
6. Share and own. Provide it to the team, and name someone to update it.

Skills work best on top of shared business knowledge, so the method has accurate facts to work from. Skein builds skills as the agents of a Company OS, each reading a shared company brain. That suits a team that wants its best methods available to everyone. A solo user can begin with one personal skill and no wider system.

Frequently asked questions

What is a Claude Skill?

A Claude Skill is a folder of instructions, scripts and resources that teaches Claude how to do a specific task. It contains a SKILL.md file with a name, a short description and the instructions. Claude loads a skill only when a request matches its description, then follows the method inside.

How do I use Claude Skills?

Enable Skills in Claude's settings, which requires code execution, then add skills from Anthropic or create your own by uploading a folder with a SKILL.md file. Claude uses a skill automatically when your request matches its description. Team and Enterprise administrators can provide skills to the whole organisation.

Are Claude Skills free?

In October 2026, Anthropic's help centre listed Skills as available on the Free, Pro, Max, Team and Enterprise plans, with code execution required. Availability and plan details change often, so check Anthropic's current documentation before relying on a particular plan for your team.

What is the difference between Claude Skills and MCP?

MCP, the Model Context Protocol, connects Claude to data and tools such as a CRM or drive. A skill teaches Claude what to do with that data, such as how to write a report from it. Anthropic summarises it as MCP connecting Claude to data and Skills teaching Claude what to do with it.

Can I use Claude Skills with ChatGPT?

Anthropic published Agent Skills as an open standard in December 2025, with the specification at agentskills.io, so other AI tools can adopt the same format. Whether a given assistant supports skills depends on that vendor. Keeping skills in the standard format makes them easier to move between tools.

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