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 hristo2612/jinn --skill experimentsgit clone --depth 1 https://github.com/hristo2612/jinnWrote 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/hristo2612/jinn/experiments)<a href="https://agentmods.dev/skills/hristo2612/jinn/experiments"><img src="https://agentmods.dev/badge/skills/hristo2612/jinn/experiments/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/hristo2612/jinn/experiments"><img src="https://agentmods.dev/badge/skills/hristo2612/jinn/experiments.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00013 | $0.00269 |
| Opus 5.5 | $0.00005 | $0.00108 |
| Sonnet 5.5 | $0.00003 | $0.00054 |
| Haiku 4.5 | $0.00001 | $0.00027 |
Grade A, and why
experiments 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
Experiments Skill
Use an Experiment when a decision depends on a testable hypothesis, measurable baseline, explicit metrics, and a time horizon. Keep ordinary tasks in Todos and reusable procedure in Workflows.
Tools
list_experiments: inspect running or concluded experiments.get_experiment: read one experiment with its metrics and readings.create_experiment: define the name, hypothesis, baseline, metrics, horizon, and optional check-in schedule.update_experiment: edit the definition of a running experiment.record_reading: append a dated metric value and optional note.conclude_experiment: finish with a win, loss, or inconclusive verdict and supporting note.
Operating rule
State the decision the experiment will inform before creating it. Use metrics that can actually be observed, preserve the baseline, and record readings without rewriting history. Change a running definition only when the measurement plan genuinely changes, and explain the change in the next reading.
Conclude at the declared horizon or when a valid stopping condition is met. Base the verdict on recorded evidence, state limitations plainly, and turn follow-up work into a Todo or Workflow only when there is a real owned outcome or reusable procedure.
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 · 24 lines · 13 tokens per session scan A f6080dc4b838
experiments is a skill published in the GitHub repository hristo2612/jinn (325 stars, last pushed 27d ago), licensed MIT. It adds 13 tokens to every session and 269 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.
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