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 stbarbe/agent-skills-cli --skill test-skillgit clone --depth 1 https://github.com/stbarbe/agent-skills-cliWrote 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/stbarbe/agent-skills-cli/test-skill)<a href="https://agentmods.dev/skills/stbarbe/agent-skills-cli/test-skill"><img src="https://agentmods.dev/badge/skills/stbarbe/agent-skills-cli/test-skill/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/stbarbe/agent-skills-cli/test-skill"><img src="https://agentmods.dev/badge/skills/stbarbe/agent-skills-cli/test-skill.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 | $0.00017 | $0.00114 |
| Opus 5.5 | $0.00007 | $0.00046 |
| Sonnet 5.5 | $0.00003 | $0.00023 |
| Haiku 4.5 | $0.00002 | $0.00011 |
Grade A, and why
test-skill 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.
This is a copy
100% identical to test-skill — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
What it actually says
Test Skill
When to use this skill
Use this skill when the user needs to...
Instructions
- First step
- Second step
- Third step
Examples
Example 1
Example input or command
Best practices
- Best practice 1
- Best practice 2
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 · 34 lines · 17 tokens per session scan A b816e653c320
test-skill is a skill published in the GitHub repository stbarbe/agent-skills-cli (12 stars, last pushed 1mo ago), licensed MIT. It adds 17 tokens to every session and 114 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to test-skill, differing in 0 lines, and is treated as a copy.
Other skills, from other repositories
Canvas Skill
Present interactive HTML, visualizations, dashboards, and generated interfaces on connected Cybara nodes.
mactop
Retrieve real-time hardware metrics from Apple Silicon Macs using mactop. Provides CPU, RAM, GPU, power, thermal, network, disk I/O, and Thunderbolt bus information. Use when the user wants system stats, hardware monitoring, or performance metrics on Apple Silicon Macs.
oss-forensics
Investigate open-source repository compromise, deleted commits, force-pushes, suspicious releases, and supply-chain indicators with evidence IDs.
api-debug
Debug REST, GraphQL, webhook, and OAuth/API-key integrations with layered request, auth, schema, and response checks.
authorized-web-pentest
Run an authorized, scoped web application security test with evidence-based findings and strict active-testing guardrails.
code-wiki
Generate architecture wiki docs, module maps, and Mermaid diagrams for a codebase using Cybara file/search/write tools.