How do I install the Skill Installer skill?

Run npx skillmds add majiayu000/skill-installer in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Skill Installer safe to use?

This skill has not completed SkillMD's automated safety review yet. Capability flags: makes network calls. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Skill Installer?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Skill Installer free to use?

Yes. Installing skills from SkillMD is free. This skill is licensed under MIT.

Who published Skill Installer?

majiayu000 (@majiayu000) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Skill Installer by majiayu000 — Agent Skill

Name: Skill Installer
Rating: 4.5 (4 reviews)
Author: majiayu000

Skill Installer

Install or update Agent Skills (skill folders with SKILL.md) across agent harnesses. Use when the user says install a skill, add this skill to my machine or repo, update a skill, move a skill between harnesses, or update a skill from a URL.

majiayu000 0176c33 2 files · 3.3 KB Updated Sep 9, 2026 567 repo stars

File contents

Skill installer

Usage

Use this skill when the user asks to install, update, or migrate a skill so that it is discoverable by a specific agent harness.

Typical requests:

"Install this skill from a URL"
"Add this skill to my machine"
"Add this skill to this repo"
"Update this skill from this URL"

Requirements

File system access to the destination directories
Network access if installing from a URL
git if installing from a git repository URL
A tool for fetching URLs (curl, wget, or a built-in web fetch tool)

What it does

This skill helps you do three things safely:

Decide whether a skill is repo-specific or machine-specific.
Install the full skill folder into one or more harness-specific locations.
Update an existing installed skill while keeping a backup.

How it works

Clarify scope and targets

Ask these questions if the user has not already specified the answers:

Is this skill repo-specific or machine-specific?
Which harnesses should be able to discover it?
What is the source of truth?
- local folder path
- git repo URL
- zip URL
- raw SKILL.md URL

If the user is unsure about repo versus machine scope, use this heuristic:

Repo-specific: only useful in one repo, depends on that repo’s structure or conventions.
Machine-specific: reusable across many repos.

Choose destinations

Use references/harness-locations.md to map harness and scope to install paths.

Install

Confirm the skill directory name matches name in frontmatter.
Confirm SKILL.md contains valid frontmatter (name, description).
Copy the entire skill folder into each destination.

Update

When updating an already installed skill:

Create a timestamped backup of the existing installed folder.
Replace the installed folder with the new version.
Confirm the harness can discover the updated skill.

Do not delete user files unless they explicitly ask.

Notes on distribution

Some ecosystems distribute a packaged .skill file, which is a zip container. Treat that as a distribution artifact, not the canonical source.

---name: skill-installerdescription: Install or update Agent Skills (skill folders with SKILL.md) across agent harnesses. Use when the user says install a skill, add this skill to my machine or repo, update a skill, move a skill between harnesses, or update a skill from a URL.license: MIT--- # Skill installer ## Usage Use this skill when the user asks to install, update, or migrate a skill so that it is discoverable by a specific agent harness. Typical requests: - "Install this skill from a URL" - "Add this skill to my machine" - "Add this skill to this repo" - "Update this skill from this URL" ## Requirements - File system access to the destination directories - Network access if installing from a URL - `git` if installing from a git repository URL - A tool for fetching URLs (`curl`, `wget`, or a built-in web fetch tool) ## What it does This skill helps you do three things safely: 1. Decide whether a skill is repo-specific or machine-specific. 2. Install the full skill folder into one or more harness-specific locations. 3. Update an existing installed skill while keeping a backup. ## How it works ### Clarify scope and targets Ask these questions if the user has not already specified the answers: 1. Is this skill repo-specific or machine-specific? 2. Which harnesses should be able to discover it? 3. What is the source of truth? - local folder path - git repo URL - zip URL - raw `SKILL.md` URL If the user is unsure about repo versus machine scope, use this heuristic: - Repo-specific: only useful in one repo, depends on that repo’s structure or conventions. - Machine-specific: reusable across many repos. ### Choose destinations Use `references/harness-locations.md` to map harness and scope to install paths. ### Install 1. Confirm the skill directory name matches `name` in frontmatter. 2. Confirm `SKILL.md` contains valid frontmatter (`name`, `description`). 3. Copy the entire skill folder into each destination. ### Update When updating an already installed skill: 1. Create a timestamped backup of the existing installed folder. 2. Replace the installed folder with the new version. 3. Confirm the harness can discover the updated skill. Do not delete user files unless they explicitly ask. ### Notes on distribution Some ecosystems distribute a packaged `.skill` file, which is a zip container. Treat that as a distribution artifact, not the canonical source.

Frequently asked questions