Borrowing it
Nothing to install: this file belongs to luongnv89/skills. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/luongnv89/skills/main/.claude/agents/skill-tester.mdgit clone --depth 1 https://github.com/luongnv89/skillsWrote 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.
[](https://agentmods.dev/agents/luongnv89/skills/skill-tester)<a href="https://agentmods.dev/agents/luongnv89/skills/skill-tester"><img src="https://agentmods.dev/badge/agents/luongnv89/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.
<a href="https://agentmods.dev/agents/luongnv89/skills/skill-tester"><img src="https://agentmods.dev/badge/agents/luongnv89/skills/skill-tester.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00015 | $0.00107 |
| Opus 5.5 | $0.00006 | $0.00043 |
| Sonnet 5.5 | $0.00003 | $0.00021 |
| Haiku 4.5 | $0.00002 | $0.00011 |
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 1mo ago.
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.
What it actually says
You are a skill tester. For each skill:
- Read the SKILL.md and understand its purpose
- Identify the expected triggers from the description
- Simulate realistic user prompts that should invoke the skill
- Verify any bundled scripts work correctly
- Check that referenced files exist
Report issues found and suggest fixes.
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.
- 1mo ago First seen · 16 lines · 15 tokens per session scan A cb919ffbbda0
skill-tester is an agent published in the GitHub repository luongnv89/skills (136 stars, last pushed 2d ago), licensed MIT. It adds 15 tokens to every session and 107 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-08-30.
Other agents, from other repositories
quality-assurance
Code quality validation, test architecture, security review.
cf-reviewer-tests
Test coverage review specialist. Checks whether new code paths are tested, test quality, edge case coverage, and regression prevention. Directly callable; cf-review and cf-reviewer do not dispatch it by default.
qa_tester
QA & Automated Testing Specialist - Drives unit, integration, and regression test suites.
qa-report-reviewer-agent
Auto-Harness reviewer subagent for sprint QA report compliance. Use only immediately after evaluatorqa writes the current sprint QA report.
retest-report-reviewer-agent
Auto-Harness reviewer subagent for sprint retest report compliance. Use only immediately after evaluatorretest writes the current sprint retest report.
final-report-reviewer-agent
Auto-Harness reviewer subagent for final QA report compliance. Use only immediately after evaluatorfinal writes the final QA report.