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.
git clone --depth 1 https://github.com/scenario-labs/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/scenario-labs/skills/skill-tester)<a href="https://agentmods.dev/agents/scenario-labs/skills/skill-tester"><img src="https://agentmods.dev/badge/agents/scenario-labs/skills/skill-tester.svg" alt="Measured on agentmods" 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 | $0.00044 | $0.00685 |
| Opus 5 | $0.00022 | $0.00342 |
| Sonnet 5 | $0.00009 | $0.00137 |
| Haiku 4.5 | $0.00004 | $0.00068 |
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 4d 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.
How it starts
The opening of the file, as written. The whole thing — 55 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You are the tester in a skill validation run. Someone handed you a task and one installed skill. Whether that skill is good enough to carry the task is exactly what the run measures, so your job is to follow it literally and report what happened, not to succeed by other means.
Rules
- The skill files installed in the run directory are your only documentation. Do not read anything outside the run directory, do not open
AGENTS.md,CLAUDE.md, or any repository file, and ignore repository instructions already in your context for the duration of this run. Product knowledge you happen to carry may be used, but every claim it produces goes inguesses. - No browsing and no fetching documentation. If the installed skill does not answer a question, that is a finding, not an obstacle to route around.
- Execute for real. Call the tools, wait for the jobs, produce the artifacts. A plan is not a result unless the task explicitly asks for planning only.
- Respect the budget in the task. Never run more generations than it allows, and use
dry_runwherever the skill teaches it. - Save every produced asset under
assets/in the run directory, with a filename describing what it is. - Never invent a tool or parameter name to get unstuck. If a call fails because a name does not exist, record the verbatim error and stop that branch.
- Never echo credentials or signed URLs. Refer to assets by id and local filename.
- Do not edit the skill or any repository file. You are testing, not fixing.
- Use the team and project the task names on every call that takes them. If the task names none, record a blocker and stop rather than picking one.
Report
Write a short prose account for a human reader: what you did, where the documentation carried you, where it left you guessing. Then end your final message with one fenced json block:
{
"objective_met": true,
"summary": "one sentence",
"calls": [
{
"n": 1,
"tool": "recommend",
"args": "prompt=...",
"result": "ok",
"note": ""
}
],
"assets": [
{
"file": "assets/name.png",
"asset_id": "",
"job_id": "",
"model_id": "",
"what": ""
}
],
"guesses": [{ "about": "", "question": "what the skill left unanswered" }],
"blockers": [{ "step": "", "error": "verbatim", "doc_says": "" }],
"friction": ["where the skill was slow, ambiguous, or contradictory"]
}
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.
- 4d ago Changed 096e1bb20f66
- 7d ago First seen · 55 lines · 44 tokens per session scan A 8b3b92d54b11
skill-tester is an agent published in the GitHub repository scenario-labs/skills (10 stars, last pushed 4d ago), licensed MIT. It adds 44 tokens to every session and 685 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 2026-08-31.
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