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Skill Development

A meta-skill that walks through a 6-step process and checklists for designing, writing, and validating Claude Code plugin skills.

Dev & CodingIntermediate★ 578⑂ 72AI score 7/10Last updated: Sep 26, 2026

What it does

  • Triggers on requests like "create a skill", "add a skill to plugin", or "improve skill description".
  • Explains SKILL.md anatomy (frontmatter + body) and when to use scripts/, references/, and assets/.
  • Enforces three-level progressive disclosure: always-loaded metadata, lean SKILL.md body (1,500–2,000 words), and on-demand bundled resources.
  • Supplies good/bad description examples, imperative writing rules, a final validation checklist, and four common mistakes to avoid.

Who it's for

  • Developers building Claude Code plugins or an internal skill library.
  • Anyone whose skill fails to trigger and needs a sharper description.
  • Team leads standardizing skill conventions (style, directory layout).

Examples

  1. "Build me a PDF rotation skill" → it asks about use cases, then plans a scripts/rotate_pdf.py helper.
  2. "My skill never loads" → rewrites the description in third person with concrete trigger phrases.
  3. "My SKILL.md is 8,000 words" → proposes splitting details into references/patterns.md and references/advanced.md.

· · · Install guide · · ·

Try it now, no install

Paste this into Claude to use the skill without installing anything.

Read the instructions in this file and follow them to help me:
https://raw.githubusercontent.com/scenario-labs/skills/HEAD/.agents/skills/skill-development/SKILL.md

What I want: (describe your task here)

If Claude can't open the link, open it yourself and paste the contents instead.

↓ If it works for you, download the ZIP below and install it. Then it runs on its own — no pasting each time.

Install in the Claude app (no terminal)
  1. Download the ZIP with the button below.
  2. In Claude, open Settings → Capabilities and turn on 'Code execution and file creation'. (one time)
  3. Go to Customize → Skills → + → 'Upload a skill' and upload the ZIP.
↓ Download ZIP
Install in Claude Code

Let Claude do it — paste this into Claude Code

Install the skill I found on Claude Skill Mart.
Copy the .agents/skills/skill-development folder from the GitHub repo scenario-labs/skills into my ~/.claude/skills/scenario-labs-skill-development/.
When it's done, tell me in one line what this skill can do.

Install with a command instead

git clone https://github.com/scenario-labs/skills.git /tmp/sl-skills && mkdir -p ~/.claude/skills && cp -r /tmp/sl-skills/.agents/skills/skill-development ~/.claude/skills/

⚠ This is a third-party skill. Check the source repository before installing.

  1. Open a terminal.
  2. Clone the repo to a temp folder: git clone https://github.com/scenario-labs/skills.git /tmp/sl-skills
  3. Create your personal skills folder: mkdir -p ~/.claude/skills
  4. Copy just this skill: cp -r /tmp/sl-skills/.agents/skills/skill-development ~/.claude/skills/
  5. Check whether a references/ folder came along; if not, ignore the reference links mentioned in the body.
  6. Restart Claude Code and say "I want to create a new skill" to confirm it triggers.
View source on GitHub ↗License: MIT