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 kucherenko/petropowers --skill brainstorming-gatekeepergit clone --depth 1 https://github.com/kucherenko/petropowersWrote 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/kucherenko/petropowers/brainstorming-gatekeeper)<a href="https://agentmods.dev/skills/kucherenko/petropowers/brainstorming-gatekeeper"><img src="https://agentmods.dev/badge/skills/kucherenko/petropowers/brainstorming-gatekeeper/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/kucherenko/petropowers/brainstorming-gatekeeper"><img src="https://agentmods.dev/badge/skills/kucherenko/petropowers/brainstorming-gatekeeper.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00033 | $0.00909 |
| Opus 5 | $0.00016 | $0.00454 |
| Sonnet 5 | $0.00007 | $0.00182 |
| Haiku 4.5 | $0.00003 | $0.00091 |
Grade A, and why
brainstorming-gatekeeper 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 10d 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 — 124 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Skill: Brainstorming Gatekeeper
Pre-flight check that analyzes user requests and determines if brainstorming is required before any action.
When to Invoke
Invoke this skill when the user request contains ANY of:
- Creative keywords (generate, create, build, implement, add, develop, make, set up, write, design)
- Oil & gas domain terms (reservoir, well, seismic, production, drilling, LAS, SEG-Y, WITSML, pipeline)
- Missing critical details (no size, format, location, constraints specified)
Skill Type: Rigid
This is a gatekeeper skill. Follow the decision logic exactly. Do not rationalize around it.
Trigger Detection
Keywords Table
| Category | Triggers |
|---|---|
| Creative | generate, create, build, implement, add, develop, make, set up, write, design, construct, establish |
| Oil & Gas | reservoir, well, seismic, production, drilling, LAS, SEG-Y, WITSML, PRODML, pipeline, formation, porosity, permeability, logs, survey |
| Ambiguity | Missing: size, format, location, constraints, data type, time range, count, structure |
Decision Logic
IF (has_creative_keyword AND has_domain_context)
OR (has_creative_keyword AND has_ambiguity)
OR (has_domain_context AND has_ambiguity)
THEN → brainstorming required
ELSE → proceed directly
Your Task
Analyze the user's request against the triggers above. Then output ONE of:
Output A: Brainstorming Required
## Gatekeeper Decision: Brainstorming Required
**Triggers detected:**
- Keyword: [list detected creative keywords]
- Domain: [list detected domain terms]
- Ambiguity: [list missing details]
**Action:** Invoke brainstorming skill before proceeding.
Do NOT execute any implementation actions.
Then immediately invoke the brainstorming skill.
Output B: Proceed Directly
## Gatekeeper Decision: Proceed
**Analysis:** [Brief explanation why this is not creative work]
**Action:** Continue with appropriate skill or direct response.
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.
- 10d ago First seen · 124 lines · 33 tokens per session scan A f011e8d2039d
brainstorming-gatekeeper is a skill published in the GitHub repository kucherenko/petropowers (11 stars, last pushed 5mo ago), licensed MIT. It adds 33 tokens to every session and 909 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 2026-08-30.
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