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Best Agent Skills

One format, read by ChatGPT, Claude, Codex, Copilot, Cursor, Gemini and more

Agent skills turn your AI app into a specialist.

A skill is a small add-on that teaches your AI how to do one job well: build a pitch deck, cut a launch video, write copy that doesn't sound like AI. Find good ones by what they make, add them to the app you already use, and check they're safe first.

Apps covered here
14
Skills for work
32
Installs as of
Oct 20

Add a skill to the app you use

Also:

Purple: installs in the last 24 hours on skills.sh (Oct 20, 2026). Orange: US Google searches in September 2026, each well above its 12-month average (PageGun keyword data).

What you can make

Start with the result you want

Each kind of work below has AI agent skills that people already install by the thousands. The drawings show the kind of output, not the work of a specific skill.

The plain explanation

What is an agent skill?

Think of it as a playbook you hand to a new colleague. It is a folder with written instructions for one kind of job, and sometimes templates, examples or small programs that do the fiddly parts.

Anthropic created the format, and in December 2025 published it as an open standard at agentskills.io. That is why the same skill can work in ChatGPT, Codex, Copilot, Cursor, Gemini and dozens of other apps.

  1. 1

    Your app knows the summary

    It keeps a short description of every skill you have, so it knows what is available without reading them all.

  2. 2

    Your request matches a skill

    Ask for a pitch deck and the app opens the slide skill and reads its full instructions.

  3. 3

    Extras load only if needed

    Templates, reference files and programs inside the skill are used only when the job calls for them.

Skills, connectors, instructions and plugins

Four words you will see in every AI app's settings, and what each one is for.

Skills compared with connectors, custom instructions and plugins
Thing What it is
Skill Know-how for one kind of job. Used only when your request matches. “Turn this into a pitch deck” brings in a slide skill.
Connector (MCP) A live link to another service, so the agent can read data or act there. “What is on my calendar at 3pm?” uses a calendar connector.
Custom instructions Standing notes that apply to every chat or project, all the time. “Always write in British English.”
Plugin A package that bundles skills and connectors so they install together. In ChatGPT, skills arrive inside plugins.

From the companies behind the apps

Official skill collections

The safest place to start. Counts are read from each collection's files.

Only use Claude? Our sister site Best Claude Apps covers Claude skills, connectors and plugins in depth.

Install in any app

Where skills live in each app

The same skill folder works almost everywhere; only the place you put it changes. Checked against each app's docs on Oct 20, 2026.

Where each app keeps agent skills and how to add them
App Where your skills go How to add one Docs
ChatGPT OpenAI Inside plugins; the desktop app also lists skills in the sidebar Add a plugin that includes skills, then type @ Docs ↗
Claude app Anthropic Settings > Features (upload a .zip) Upload the skill as a .zip Docs ↗
Codex OpenAI ~/.agents/skills Type $skill-installer, or paste an install prompt Docs ↗
Claude Code Anthropic ~/.claude/skills Paste an install prompt into the agent Docs ↗
Cursor ~/.cursor/skills Paste an install prompt into the agent Docs ↗
GitHub Copilot GitHub ~/.copilot/skills Paste an install prompt into the agent Docs ↗
Gemini CLI Google ~/.gemini/skills Paste an install prompt into the agent Docs ↗
Windsurf ~/.codeium/windsurf/skills Paste an install prompt into the agent Docs ↗
Kiro ~/.kiro/skills Paste an install prompt into the agent Docs ↗
Antigravity Google ~/.gemini/antigravity/skills Paste an install prompt into the agent Docs ↗
OpenCode ~/.config/opencode/skills Paste an install prompt into the agent Docs ↗
Cline ~/.agents/skills Paste an install prompt into the agent Docs ↗
Amp ~/.config/agents/skills Paste an install prompt into the agent Docs ↗
Goose Block ~/.agents/skills Paste an install prompt into the agent Docs ↗

A folder path starting with ~ is in your home folder. Many agents also read the shared ~/.agents/skills folder. More apps: the agentskills.io showcase lists 49.

Before you install

Skills can run things on your computer. Pick them like software.

A skill is mostly plain text, but that text tells your agent what to do, and some skills ship programs it will run. Most are fine. Some are not.

13.4%

of scanned skills had a critical issue

76

confirmed malicious payloads

3,984

skills scanned from ClawHub and skills.sh

Source: Snyk ToxicSkills study, February 2026. The malicious ones tried to steal passwords and keys, open backdoors or send data away.

How to check a skill in two minutes

  1. 1

    Start with publishers you know. The app makers’ own collections, or the company behind the tool the skill is about (HeyGen’s video skills come from HeyGen).

  2. 2

    See whether it runs programs. Our list marks every skill as “Instructions only” or “Includes program files”. Program files are common, but they are what can touch your computer.

  3. 3

    Treat “prerequisites” as a red flag. Never download an extra file, paste a password or API key, or run a command you don’t understand because a skill says so. A 2026 malware wave on ClawHub worked exactly this way.

  4. 4

    Let your agent show you first. Our install prompts ask the agent to list every file, explain any scripts and stop if it sees requests for passwords, keys or outside downloads.

  5. 5

    Look at the security checks. skills.sh runs audits with partner security firms and shows results on each skill’s page. Brand-new skills may not have been checked yet.

  6. 6

    Re-check after updates. A skill can change when you update it. If it suddenly asks for more, stop.

Coming next

Original skills, made by us

We are building our own skills for the kinds of work on this page, for people who use AI apps rather than code. Some will be paid. Each one will show real examples of what it makes before you install it, list every file inside, and say which apps we have tested it in.

Nothing to sign up for yet. They will appear on this page first.

Questions people ask

What are agent skills?

An agent skill is a folder of instructions, sometimes with templates and small programs, that teaches an AI agent how to do one kind of job, such as making a slide deck or editing copy. The agent keeps a one-line summary of every skill in mind and reads the full instructions only when your request matches. The format was created by Anthropic and published as an open standard at agentskills.io in December 2025.

Which apps support agent skills?

The agentskills.io showcase lists 49 apps. This page covers ChatGPT, Claude, Codex, GitHub Copilot, Cursor, Gemini CLI, Windsurf, Kiro, Antigravity, OpenCode, Cline, Amp, Goose. ChatGPT gets skills inside plugins; the Claude app takes .zip uploads; the rest read skills from a folder on your computer.

Do I need to code or use a terminal?

No. In the Claude app you upload a .zip in Settings > Features. In ChatGPT, skills come with plugins and you pick one by typing @. In agents that work with files, such as Codex, Copilot or Cursor, you can paste one of the install prompts on this page and the agent does the copying for you.

Are agent skills free?

Every skill listed here is free to download. Licences differ: many are MIT or Apache-2.0, while Anthropic's Word, Excel, PowerPoint and PDF skills are source-available under a proprietary licence. A few skills call a paid outside service, such as the YouTube thumbnail skill, which uses Higgsfield.

Is this a skills marketplace?

It is a free, independent directory. Nothing is sold here today: every skill links to its real source and its skills.sh page. We plan to publish original skills of our own later, and they will be clearly marked.

What is the difference between a skill and an MCP connector?

A skill is know-how: instructions (and sometimes programs) for how to do a task. A connector, built on the Model Context Protocol (MCP), is a live link to another service, such as your calendar or Notion, so the agent can read data or take actions there. They work well together, and plugins can bundle both.

Are agent skills safe?

Not automatically. A skill can tell your agent to run programs on your computer. In February 2026 Snyk scanned 3,984 skills and found critical issues in 13.4% of them, including 76 confirmed malicious payloads. Prefer well-known publishers, read what a skill contains before installing, and never follow a skill that asks for passwords or extra downloads.

Can I make my own skill?

Yes. A skill is just a folder with a SKILL.md text file inside, so you can write one by hand. ChatGPT can draft one for you with @skill-creator in ChatGPT Work, and Anthropic's open skill-creator skill helps you write and test one.