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.
npx skills add khanhhuyenngo985-sys/character-scene-design-skills --skill perl-testinggit clone --depth 1 https://github.com/khanhhuyenngo985-sys/character-scene-design-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/skills/khanhhuyenngo985-sys/character-scene-design-skills/perl-testing)<a href="https://agentmods.dev/skills/khanhhuyenngo985-sys/character-scene-design-skills/perl-testing"><img src="https://agentmods.dev/badge/skills/khanhhuyenngo985-sys/character-scene-design-skills/perl-testing/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/skills/khanhhuyenngo985-sys/character-scene-design-skills/perl-testing"><img src="https://agentmods.dev/badge/skills/khanhhuyenngo985-sys/character-scene-design-skills/perl-testing.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 | $0.00035 | $0.03084 |
| Opus 5 | $0.00017 | $0.01542 |
| Sonnet 5 | $0.00007 | $0.00617 |
| Haiku 4.5 | $0.00003 | $0.00308 |
Grade A, and why
perl-testing 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 9d 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.
The source is not reproduced here
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
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.
- 9d ago First seen · 476 lines · 35 tokens per session scan A b9ea58b1e80d
perl-testing is a skill published in the GitHub repository khanhhuyenngo985-sys/character-scene-design-skills (10 stars, last pushed 3mo ago), with no licence file. It adds 35 tokens to every session and 3,084 once invoked, about $0.0002 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 2026-09-03.
Other skills, from other repositories
cpp-testing
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typescript-test-writing
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golang-testing
A guide to testing Go programs, including test-driven development (TDD), table-driven tests, coverage, and debugging. TDD means writing a failing test before implementing the code that makes it pass.
python-testing
A Python testing guide covering pytest, test coverage, and test-driven development (TDD), a method of writing a failing test before the code that makes it pass.
perl-testing
Perl testing patterns using Test2::V0, Test::More, prove runner, mocking, coverage with Devel::Cover, and TDD methodology.
ts-library
Use when authoring TypeScript libraries or npm packages - covers project setup, package.json exports, build tooling (tsdown/unbuild), API design patterns, type inference tricks, testing, and publishing to npm. Use when bundling, configuring dual CJS/ESM output, or setting up release workflows.