Anthropic presents Claude Skills as a practical way to turn Claude into a specialist for concrete tasks: they're folders with instructions, scripts and resources that Claude loads only when it needs them. The company announced the feature on October 16, 2025, and promises that Skills work both in the apps and in the developer environment. (anthropic.com)
What Claude Skills are
Think of a Skill as an onboarding package that teaches Claude how to do a specific task well. It can include templates, examples, style rules, and even executable code for processes where programming is more reliable than generating text.
These Skills are designed to be reusable: create once, use in many places. Handy, right? (anthropic.com)
How they work in practice
While you work, Claude scans the available Skills and loads only the minimal information needed for the task. Less noise, more focused answers, and faster execution.
Skills are composable: several can be combined, and Claude coordinates their use automatically. So you can have Claude apply your company's brand guidelines when it generates a presentation, or run scripts to create and populate spreadsheets with complex formulas. (anthropic.com)
Where you can use them: apps, Code and API
Skills are available in Claude apps for Pro, Max, Team and Enterprise users. They also work in Claude Code and via the developer platform: there's a POST /v1/skills endpoint (and version management) to integrate Skills into programmatic flows.
To run Skills that contain code, Anthropic requires the use of the Code Execution Tool in beta, which creates the secure environment necessary to run that code. (anthropic.com)
Concrete examples
Some partners are already showing real cases: Claude turning files stored in Box into presentations or spreadsheets that meet internal standards; Claude connecting with Notion to turn a response into an actionable item; or finance teams using Skills to process multiple sheets and spot anomalies in minutes instead of hours.
Those are examples of how a Skill can save time and reduce manual work. (anthropic.com)
Security considerations and best practices
Skills can execute code, and that opens possibilities but also requires caution. Use Skills from trusted sources, validate versions, and control permissions at the organization level.
Anthropic explicitly warns that while execution is powerful, you must be aware of the risk and keep internal approval policies in place. Better safe than sorry, right? (anthropic.com)
How to get started today
- In apps: enable Skills from Settings. In Team and Enterprise plans, admins must enable them for the organization.
- Creating Skills is guided: there's a "skill-creator" that asks about your workflow and generates the structure and a
SKILL.mdfile so you don't have to edit everything by hand. - If you're a developer: check the API documentation, install Skills in Claude Code, or use the examples repo on GitHub as a starting point. (anthropic.com)
So what now? Skills put customization and execution into the hands of teams, not just engineers. That means less prompt-wrangling and more predictable results.
But it also demands discipline: version, test, and limit where Skills come from so you don't compromise data. If you work with documents, templates or repeatable processes, this can be a real productivity shift.