What is an agent skill?
A skill is a folder that gives an AI agent a repeatable way to do a particular job. The central file is SKILL.md. Some folders also contain scripts, templates, reference documents or assets. A skill is not a model, an agent subscription or a standalone application. It needs a compatible agent to read and apply it.
For example, a content skill might guide your agent through a research brief and outline. A development skill might describe a testing workflow. A media skill may explain how to create a composition and use separate software to render the final file.
Start with one small task
Choose something with a result you can inspect: a 300-word update, a single landing page, or a short transcription from footage you own. Avoid your largest project on the first run. Open the skill’s detail page and read its requirements, permissions, compatibility notes and examples.
You need your own configured agent. Depending on the workflow, you may also need local software or a third-party service. A free download does not include any model or external API usage costs.
Download and install the folder
Download the ZIP from SkillPick. Extract it and find the folder containing SKILL.md. Keep its scripts, references and notices together. Put that folder inside your agent’s skills directory. Use the Codex, Claude Code or Cursor guide for the current project and personal paths.
Start a fresh session and ask the agent which skills are available. If yours is missing, check for a second nested folder introduced by the ZIP extraction. The skill directory should contain SKILL.md directly, with valid metadata at the top.
Give the agent a reviewable brief
Specify the input, audience, output and constraints. Instead of “write content,” try: “Use the installed content workflow to draft a 300-word update for our beta users. Use only the facts in notes.md, explain the two limitations, and save the draft for review.”
For a workflow that can change files, work in a copy or a version-controlled project. Inspect scripts before allowing execution. Do not paste sensitive credentials into a prompt or send private documents to an external service without understanding its processing.
Check the result
Compare the output against your brief. Verify factual claims, links and numbers. For code, run it and inspect the interface. For video, play the exported file and inspect duration, dimensions, sound and text. A generated plan, project or preview is not the final artifact.
If the run fails, record the skill version, agent, operating system and error. Those details make a problem report more useful. Change one thing at a time so you can see what helped.