SkillCheck Free — Development skill for Claude Code

SkillCheck Free

[](https://opensource.org/licenses/MIT) [](https://docs.anthropic.com/en/docs/claude-code) [](https://support.claude.com/en/articles/12512180-using-skills-in-claude) [](https://cursor.com/docs/context/rules)

[](https://getskillcheck.com)

Validate AI coding assistant skills against the [agentskills specification](https://agentskills.io). Works with Claude Code, Claude Desktop/Web, and Cursor. Catch issues before your users do.

Why SkillCheck?

Agent Skills are now an open standard adopted by Claude Code, Cursor, and dozens of coding agents. Your skill needs to work everywhere and follow best practices.

SkillCheck validates:

• Does the YAML frontmatter follow the spec?
• Will it trigger when users actually need it?
• Are the instructions clear and unambiguous?

Installation

Claude Code

Copy the `skill-check` folder to your Claude Code skills directory:

cp -r skill-check ~/.claude/skills/

Or clone directly:

git clone https://github.com/olgasafonova/SkillCheck-Free.git
cp -r SkillCheck-Free/skill-check ~/.claude/skills/

Claude Desktop/Web (Projects)

1. Open claude.ai or Claude Desktop app
2. Create a new Project (or open an existing one)
3. Go to Project settings → Custom instructions
4. Copy the contents of `skill-check/SKILL.md` (everything after the --- frontmatter)
5. Paste into the custom instructions field

No file installation needed - the skill runs directly from your Project instructions.

Cursor

Copy the rule file to your project's `.cursor/rules` directory:

mkdir -p .cursor/rules
cp cursor-rules/skill-check.mdc .cursor/rules/

Or clone directly:

git clone https://github.com/olgasafonova/SkillCheck-Free.git
mkdir -p .cursor/rules
cp SkillCheck-Free/cursor-rules/skill-check.mdc .cursor/rules/

Usage

In Claude Code, Claude Desktop/Web, or Cursor, say any of:

• "skillcheck my skill"

...