Skill Tester Skill | Agent Skills

Skill Tester

Validates all interactive (non-CI) skills in this repo. Runs the Anthropic skill-creator's quick_validate.py plus project-specific checks.

When to Use

After adding or modifying a skill
Before committing changes
Before submitting the plugin for Anthropic review
As part of the outer loop when eval-creator needs to verify skill quality

Checks

1. Anthropic Spec Validation

Run quick_validate.py on every skill in skills/ (excluding -ci variants):

for d in skills/*/; do
  skill=$(basename "$d")
  [[ "$skill" == *-ci ]] && continue
  python3 .claude/skills/skill-creator/scripts/quick_validate.py "$d"
done

Pass criteria: Exit code 0 for every skill. Frontmatter has only allowed keys (name, description, license, allowed-tools, metadata, compatibility). Name is kebab-case, max 64 chars. Description max 1024 chars, no angle brackets.

2. Project Convention Checks

For each skill directory:

| Check | Rule | Severity | |-------|------|----------| | Name matches folder | Frontmatter name == directory name | Error | | Line limit | SKILL.md under 500 lines (soft), under 600 lines (hard) | Warning / Error | | No README.md | Skill folders must not contain README.md | Error | | Scripts executable | All .sh files in scripts/ must have execute permission | Error | | References exist | Files referenced in SKILL.md body actually exist in references/ | Warning | | Description non-empty | Description field is present and non-empty | Error |

3. Cross-Reference Validation

Verify that all skills listed in these files actually exist as directories:

CLAUDE.md — Skill References section
AGENTS.md — Skill References section
.github/copilot-instructions.md — Skill References section
README.md — Skills table

Also verify reverse: every skill directory is listed in all four files.

4. Hook Script Testing

For each skill with a scripts/ directory:

# Syntax check
bash -n scripts/*.sh

# Verify shebang
head -1 scripts/*.sh | grep -q "^#!/bin/bash"

# Verify executable
test -x scripts/*.sh

5. Plugin Skill Validation

For skills that exist in both skills/ and plugin/skills/:

| Check | Rule | |-------|------| | Plugin frontmatter keys | Only Claude Code-specific keys (hooks, user-invocable, argument-hint) added beyond spec | | Content alignment | Body content matches or plugin has extracted references | | Beta markers consistent | If skills/ copy has [Beta], plugin copy should too |

Output Format

## Skill Test Results

**Date:** YYYY-MM-DD
**Skills tested:** N
**Passed:** N
**Warnings:** N
**Failed:** N

### Failures
- [skill-name]: [check]: [error message]

### Warnings
- [skill-name]: [check]: [warning message]

### All Passed
- [list of clean skills]

Running

Invoke manually:

/skill-tester

Or run the script directly:

bash skills/skill-tester/scripts/run-tests.sh

What This Skill Does NOT Do

Does not test CI skills (use skill-tester-ci for those)
Does not modify skills — reports findings only
Does not run behavioral evals (trigger testing) — use skill-creator's run_eval.py for that
Does not replace the eval-creator regression framework — this tests skill structure, not promoted rules

Agent Skills: Skill Tester

Install this agent skill to your local

Skill Files