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 whit3rabbit/clean-room-skill --skill preflightgit clone --depth 1 https://github.com/whit3rabbit/clean-room-skillWrote 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/whit3rabbit/clean-room-skill/preflight)<a href="https://agentmods.dev/skills/whit3rabbit/clean-room-skill/preflight"><img src="https://agentmods.dev/badge/skills/whit3rabbit/clean-room-skill/preflight.svg" alt="Measured on agentmods" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 3 findings, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium MCP Rug Pull · line 16 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 53 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 55 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
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 | $0.00027 | $0.01433 |
| Opus 5 | $0.00014 | $0.00717 |
| Sonnet 5 | $0.00005 | $0.00287 |
| Haiku 4.5 | $0.00003 | $0.00143 |
Grade A, and why
preflight 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 7d 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 — 73 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Clean Room Preflight
Create or validate preflight-goal.json before active clean-room artifacts start.
Preflight stops after a canonical preflight-goal.json is created or validated. Do not create behavior specs, handoff packages, skeleton manifests, implementation plans, coverage ledgers, or clean-run-context artifacts during preflight.
Use the canonical clean-room workflow and read skills/clean-room/references/PREFLIGHT.md when collecting missing goal details. Preserve the clean-room boundary: preflight-goal.json is a controller/contaminated-side artifact and must not be placed in clean-role readable roots.
If the user provides output from CLI clean-room-skill init (or npx clean-room-skill@latest init if the binary is not available), check the generated bootstrap scaffold before creating or copying preflight-goal.json: clean-room-bootstrap.json, contaminated/, clean/, the implementation root, quarantine/, target repo .clean-room/README.md, .clean-room/.gitignore, and .clean-room/local-state.json must exist and agree. In the project layout the task root sits at <base>/<project>/tasks/<task-id>/, the implementation root is the shared project-level implementation/, and clean-room-project.json must exist at the project root. Treat target-repo .clean-room/tasks/ as noncanonical unless explicitly configured; active artifacts belong in the external task root. Treat that scaffold as convenience output only; it is not an active preflight-goal.json, init-config.json, task-manifest.json, or clean-run-context.json.
Required Contract
Record these decisions:
- End goal, success definition, destination kind, and existing destination handling.
- Target stack: language, runtime, framework, package manager, and test framework.
- License and dependency policy, including blocked licenses, blocked dependencies, and native dependency approval.
- Compatibility policy: public behavior/API exactness only. Private structure, comments, and internal names must not be mirrored.
- Feature policy: preserve, remove, add, and non-goals.
- Code hygiene policy: file line caps, max files per iteration, split strategy, exceptions, and forbidden patterns.
- Output policy: artifact base root, implementation root, assumed output directory, and write mode.
- Controller policy: attended or unattended, iteration cap, and whether unattended is allowed after preflight.
- Intent confirmation:
intent_confirmationwith explicit-user-answer sources for end goal, target stack, and controller mode, plus user-facing summaries of the goal and target stack. - Open questions, with blocking questions clearly marked.
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.
- 7d ago First seen · 73 lines · 27 tokens per session scan A 00944af82eb7
preflight is a skill published in the GitHub repository whit3rabbit/clean-room-skill (10 stars, last pushed 4d ago), licensed MIT. It adds 27 tokens to every session and 1,433 once invoked, about $0.0001 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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