Borrowing it
Nothing to install: this file belongs to noontide-co/mainbranch. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/noontide-co/mainbranch/main/.claude/skills/mb-skill-review/SKILL.mdgit clone --depth 1 https://github.com/noontide-co/mainbranchWrote 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/noontide-co/mainbranch/mb-skill-review)<a href="https://agentmods.dev/skills/noontide-co/mainbranch/mb-skill-review"><img src="https://agentmods.dev/badge/skills/noontide-co/mainbranch/mb-skill-review/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/noontide-co/mainbranch/mb-skill-review"><img src="https://agentmods.dev/badge/skills/noontide-co/mainbranch/mb-skill-review.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 | $0.00097 | $0.00578 |
| Opus 5 | $0.00048 | $0.00289 |
| Sonnet 5 | $0.00019 | $0.00116 |
| Haiku 4.5 | $0.00010 | $0.00058 |
Grade A, and why
mb-skill-review 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 11d 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
skill-review
A composable skill that wraps the Seven Sweeps + auxiliary review gates. /mb-site calls this at pre-lock and pre-publish.
Inputs
- The artifact under review (brief or copy draft)
- The dial (
convert | story | brand) - Reference files (voice.md, audience.md, optional research/*)
- The brief's
do_not_statelist (for archetype-fidelity check)
Outputs
A synthesized review report:
{
"ok": false,
"dial": "convert",
"sweeps_run": [1, 2, 3, 4, 5, 6, 7],
"findings": [
{"sweep": "Specificity", "priority": "P1", "line": 12, "note": "..."},
...
],
"panel_score": 7.2,
"blocking": ["specificity", "ai-tells"]
}
Flow
- Load the artifact and the dial.
- Pick sweeps from
references/review.md— dial-gated. - Spawn one foreground subagent per active sweep, in parallel. Each returns short findings (P1/P2/P3 with line refs).
- Run auxiliary gates in parallel: De-AI'd, Framework-true, Archetype-fidelity.
- (Convert dial only) Run Expert Panel scoring across 3-5 personas.
- Synthesize findings into one report; group by sweep, P-priority, line.
- Return to caller (which surfaces to operator).
Dial-gated sweeps
| Dial | Sweeps |
|---|---|
convert |
1, 2, 3, 4, 5, 6, 7 + Expert Panel |
story |
1, 2, 3, 5, 6 |
brand |
1, 2, 6 |
Cross-references
What ships with it
13 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- references/anti-patterns.md 5.3 KB
- references/archetypes.md 3.5 KB
- references/archetypes/broken-hero.md 2.0 KB
- references/archetypes/dark-hero.md 6.2 KB
- references/archetypes/david-goliath.md 2.1 KB
- references/archetypes/redemption.md 6.7 KB
- references/archetypes/savior.md 1.9 KB
- references/archetypes/tragedy-mindset.md 6.2 KB
- references/archetypes/tragic-comedy.md 7.3 KB
- references/archetypes/victim.md 5.3 KB
- references/archetypes/wounded-healer.md 2.6 KB
- references/headline-formulas.md 3.2 KB
- references/review.md 3.7 KB
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.
- 11d ago First seen · 60 lines · 97 tokens per session scan A 4f78828507a5
mb-skill-review is a skill published in the GitHub repository noontide-co/mainbranch (39 stars, last pushed 27d ago), licensed MIT. It adds 97 tokens to every session and 578 once invoked, about $0.0005 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 2026-08-30.
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