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 FlyFission/nuclear-grade-context-engineering --skill deciding-who-decidesgit clone --depth 1 https://github.com/FlyFission/nuclear-grade-context-engineeringWrote 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/flyfission/nuclear-grade-context-engineering/deciding-who-decides)<a href="https://agentmods.dev/skills/flyfission/nuclear-grade-context-engineering/deciding-who-decides"><img src="https://agentmods.dev/badge/skills/flyfission/nuclear-grade-context-engineering/deciding-who-decides/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/flyfission/nuclear-grade-context-engineering/deciding-who-decides"><img src="https://agentmods.dev/badge/skills/flyfission/nuclear-grade-context-engineering/deciding-who-decides.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 | $0.00080 | $0.02188 |
| Opus 5.5 | $0.00032 | $0.00875 |
| Sonnet 5.5 | $0.00016 | $0.00438 |
| Haiku 4.5 | $0.00008 | $0.00219 |
Grade A, and why
deciding-who-decides 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.
How it starts
The opening of the file, as written. The whole thing — 110 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Deciding Who Decides
Overview
Authority should sit where the policy, evidence, competence, and effective ability to intervene support it, not automatically at the top or with the actor holding the tool. This skill creates an evidence-conditioned authority record for one bounded decision episode. It separates prepare, recommend, verify, validate, verdict, accept, apply, reopen, and close rights; links evidentiary rights to exact Evidence IDs; names the authority that may assemble each right's basis; preserves unknown and disputed states; and names transfer or blocking triggers. It does not infer authorization from technical capability, repository activity, fluency, or nominal human presence.
Decision contract
- Claim checked: each decision right is assigned under an explicit local policy to a named actor; each right's declared basis and basis authority are visible; required Evidence IDs and their custody profile are visible; unresolved evidence cannot silently clear agent application; and transfer/reopen/close triggers are concrete.
- Artifact observed: the bounded action;
verification.mdEvidence IDs, coded source states, intended-use/V&V status, and coupling profile; declared policy identity, authority, custody, digest, and validity; effective intervention capability; and any existing human gate ->decision-authority.mdplus a declaration-relative structural result. - Decision affected: block -- does the declared record structurally permit agent application, require authority transfer or separate/dual control, or remain blocked/prohibited/indeterminate?
- Failure class: misplaced-authority or unsupported-basis (capability treated as authorization, unresolved/self-check evidence clearing agent action, prohibited role overlap, stale basis, or skipped gate).
- Next action: record raw observations, derive the declaration-relative result, and transfer or block before side effects when the basis or authority is unresolved.
When to Use
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 · 110 lines · 80 tokens per session scan A be925f626fc4
deciding-who-decides is a skill published in the GitHub repository FlyFission/nuclear-grade-context-engineering (33 stars, last pushed 3d ago), licensed MIT. It adds 80 tokens to every session and 2,188 once invoked, about $0.0003 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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