Agent skill · Testing & QA

create-skill

Scaffolds new agent skills for the dotnet/skills repository. Use when creating a new skill, generating SKILL.md files, writing a skill description that the runtime will actually route to, or setting up skill directory structures. Handles frontmatter generation, section templates, and validation guidance. Do not use for fixing a skill that already fails its evaluation (use improve-skill-quality) or for writing eval.yaml (use create-skill-test).

dotnetgithub.com/dotnetGitHub ↗
claude-codeMIT
Install
npx skills add dotnet/skills --skill create-skill --agent claude-code

Same command for any agent — swap --agent for codex, cursor, copilot.

Facts
Files in the skill folder: 1
SKILL.md size: 10 KB
Bundled scripts: none
Path: .agents/skills/create-skill/SKILL.md
Open the folder on GitHub →
Where it comes from
Stars: 4,927
Language: C#
Read our review of the source →

Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.

From the SKILL.md

# Create Skill This skill helps you scaffold new agent skills that conform to the Agent Skills specification and the dotnet/skills repository conventions. ## When to Use - Creating a new skill from scratch - Generating a SKILL.md file with proper frontmatter - Setting up the skill directory structure with optional folders - Ensuring compliance with agentskills.io specification ## When Not to Use - Modifying existing skills (edit directly instead) - Diagnosing or fixing a skill that fails its evaluation (use `improve-skill-quality`) - Writing the skill's `eval.yaml` (use `create-skill-test`) - Creating custom agents (use the agents/ directory pattern) ## Inputs | Input | Required | Description | |-------|----------|-------------| | Skill name | Yes | Lowercase, alphanumeric, hyphens only (e.g., `code-review`, `ci-triage`) | | Description | Yes | What the skill does and when agents should use it (1-1024 chars) | | Purpose | Yes | One paragraph describing the outcome | | Workflow steps | Recommended | Numbered steps the agent should follow | ## Workflow ### Step 1: Validate the skill name Ensure the name: - Contains only lowercase letters, numbers, and hyphens - Does not start or end

What's inside
Steps it walks through
  1. When to Use
  2. When Not to Use
  3. Inputs
  4. Workflow
  5. Step 1: Validate the skill name
  6. Step 2: Write the description — it is the router
  7. Step 3: Write for delta over the baseline model
  8. Step 4: Create the skill directory
  9. Step 5: Generate SKILL.md with frontmatter
  10. Step 6: Add body content sections
  11. Step 7: Add optional directories (if needed)
  12. Step 8: Update CODEOWNERS
  13. Step 9: Validate the skill
  14. Step 10: Add the eval
More from skills
All skills →
About this skill
What does the create-skill skill do?

Scaffolds new agent skills for the dotnet/skills repository. Use when creating a new skill, generating SKILL.md files, writing a skill description that the runtime will actually route to, or setting up skill directory structures. Handles frontmatter generation, section templates, and validation guidance. Do not use for fixing a skill that already fails its evaluation (use improve-skill-quality) or for writing eval.yaml (use create-skill-test).

How do I install it?

Run `npx skills add dotnet/skills --skill create-skill --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.

Where does this skill come from?

From dotnet/skills, a repository with 4,927 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.

Is a popular skill a good skill?

Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.

Keep going