agentmods.dev

skill-tester

skill-tester is a skill for Claude Code, Codex from vahidkaargar/it-department-skills. It costs 94 tokens per session (1,336 once invoked), scanned A, original, MIT.

A testing and scoring tool for skills in the claude-skills collection. It checks their structure and documentation, runs their Python scripts, and rates their quality and security.

In plain words
What is it for?
Use it to validate a skill, test its scripts, assign a quality grade and tier, and review its security posture. Running the tests executes the target skill’s code.
Why use it?
It helps find broken files, incorrect outputs, missing requirements, and security concerns before a skill is used or shared.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: reads .claude/ paths.

not rated 2repo 1mo ago A scan 94 tokens original MIT

Good fit Use it to validate a skill, test its scripts, assign a quality grade and tier, and review its security posture. Running the tests executes the target skill’s code.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/vahidkaargar/it-department-skills/skill-tester
View source ↗ vahidkaargar/it-department-skills
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add vahidkaargar/it-department-skills --skill skill-tester
Clone the repo
git clone --depth 1 https://github.com/vahidkaargar/it-department-skills

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for skill-tester

README.md
[![agentmods](https://agentmods.dev/badge/skills/vahidkaargar/it-department-skills/skill-tester/github.svg)](https://agentmods.dev/skills/vahidkaargar/it-department-skills/skill-tester)
Your own site
<a href="https://agentmods.dev/skills/vahidkaargar/it-department-skills/skill-tester"><img src="https://agentmods.dev/badge/skills/vahidkaargar/it-department-skills/skill-tester/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for skill-tester

Your own site · 80×15
<a href="https://agentmods.dev/skills/vahidkaargar/it-department-skills/skill-tester"><img src="https://agentmods.dev/badge/skills/vahidkaargar/it-department-skills/skill-tester.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 94 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,336 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00094 $0.01336
Opus 5 $0.00047 $0.00668
Sonnet 5 $0.00019 $0.00267
Haiku 4.5 $0.00009 $0.00134

Measured 12d ago against content hash 749e798df2d7, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

skill-tester scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.

The scan reads SKILL.md. This mod also ships 6 executable files (assets/sample-skill/scripts/text_processor.py, scripts/quality_scorer.py, scripts/script_tester.py, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/skill-tester/SKILL.md · 101 lines

How it starts

The opening of the file, as written. The whole thing — 101 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Skill Tester

Tier: POWERFUL · Category: Engineering Quality Assurance · Dependencies: None (Python stdlib only)

Meta-skill that validates, tests, and scores skills in this repository. Four tools, run from the repo root with full paths:

  1. scripts/skill_validator.py — structure + documentation compliance
  2. scripts/script_tester.py — Python script syntax/imports/runtime/output testing
  3. scripts/quality_scorer.py — multi-dimensional scoring with letter grade
  4. scripts/security_scorer.py — security posture scoring (also available via quality_scorer.py --include-security)

Scope note: this skill's tier line-count minimums measure legacy skills. For authoring new skills, engineering/write-a-skill (SKILL.md under ~100 lines, Matt Pocock doctrine) is the binding standard — do not pad a new skill to satisfy a tier minimum here.

Quick Start

WARNING — runs the target's code. script_tester.py and quality_scorer.py EXECUTE the target skill's scripts. Never point them at an untrusted or unreviewed skill; run skill-security-auditor on it first.

# 1. Validate structure (exit non-zero on failure — usable as a gate)
python3 ~/.claude/skills/skill-tester/scripts/skill_validator.py ~/.claude/skills/pii-scrub --json

# 2. Test the skill's Python scripts (30s default timeout per script)
python3 ~/.claude/skills/skill-tester/scripts/script_tester.py ~/.claude/skills/pii-scrub --json

# 3. Score quality (fail CI below threshold with --minimum-score)
python3 ~/.claude/skills/skill-tester/scripts/quality_scorer.py ~/.claude/skills/pii-scrub --json --detailed --minimum-score 75

Consume the JSON: validator emits overall_score, compliance_level, per-check checks{}; scorer emits overall_score, letter_grade, tier_recommendation, dimensions, and an improvement_roadmap — work the roadmap top-down, then re-run until the target score is met.

What Each Tool Checks

skill_validator.py

  • SKILL.md frontmatter parsing, required sections, minimum line counts per tier (--tier BASIC|STANDARD|POWERFUL)
  • Required structure: SKILL.md, README.md, scripts/, references/, assets/, expected_outputs/
  • Python scripts: argparse present, stdlib-only imports

Read the full file on GitHub · 101 lines

Files

What ships with it

17 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 12d ago First seen · 101 lines · 94 tokens per session scan A 749e798df2d7

Subscribe to this mod's changes

skill-tester is a skill published in the GitHub repository vahidkaargar/it-department-skills (2 stars, last pushed 1mo ago), licensed MIT. It adds 94 tokens to every session and 1,336 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Building agentsClaude CodeTestingagent-skillsai-agentscursorgithub-actionsskills
Related

Other skills, from other repositories

test-driven-development

Drives development with tests using the red-green-refactor loop. Use when implementing any logic, fixing any bug, or changing any behavior. Use when you need to prove that code works, when a bug report arrives, or when you're about to modify existing functionality.

addyosmani/agent-skills · 57 tokens

browser-testing-with-devtools

Tests in real browsers via Chrome DevTools MCP. Use when building or debugging anything that runs in a browser. Use when you need to inspect the DOM, capture console errors, analyze network requests, profile performance, or verify visual output with real runtime data. Requires the chrome-devtools MCP server to be…

addyosmani/agent-skills · 68 tokens

verification-before-completion

A checklist for verifying work before claiming that it is finished, fixed, built, tested, or ready to submit. It requires fresh command output and evidence for each claim.

jnMetaCode/superpowers-zh · 50 tokens

writing-skills

A guide for creating and testing reusable instructions for AI agents, called skills. It applies test-driven development, or TDD—the practice of writing tests before implementation—to instruction documents.

jnMetaCode/superpowers-zh · 23 tokens

test-driven-development

Test-driven development, or TDD, is a way to build software by writing a test that fails, adding the smallest code that makes it pass, and then cleaning up the code. These instructions require that process for features, bug fixes, refactors, and behavior changes.

jnMetaCode/superpowers-zh · 20 tokens

skillshare-implement-feature

Implement a feature from a spec file or description using TDD workflow. Use this skill whenever the user asks to: add a new CLI command, implement a feature from a spec, build new functionality, add a flag, create a new internal package, or write Go code for skillshare. This skill enforces test-first development…

runkids/skillshare · 114 tokens