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 agentmods add skills/wallkop/opc-develop/brainstormnpx skills add wallkop/opc-develop --skill brainstormgit clone --depth 1 https://github.com/wallkop/opc-developWhat 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 | $0.00089 | $0.00522 |
| Opus 5 | $0.00044 | $0.00261 |
| Sonnet 5 | $0.00018 | $0.00104 |
| Haiku 4.5 | $0.00009 | $0.00052 |
Grade A, and why
brainstorm 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 2d 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
brainstorm
拷问的对象是需求价值本身，不是实现方案。这一环缺掉的判断，下游任何环节都补不回来。
前置
- 加载
${CLAUDE_PLUGIN_ROOT}/shared/core-contract.md。 - 读项目 AGENTS.md、产品地图与相关代码——代码里能查到的，不许问人。
- 若用户装有 grilling / grill-me skill，直接以其方式驱动拷问；否则按下述原则自行执行。
拷问原则
- 一次一个问题，从最硬的不确定性问起；每个问题附带推荐答案与理由。
- 武器是第一性原理与反常识：这个需求解决的本质问题是什么？不做会怎样？ 最简形态是什么？谁在什么场景下真的会用？现有能力组合能不能覆盖？ 有没有一个便宜一个量级的方案覆盖 80% 的价值？
- 显式平衡复杂度与 ROI：给出"全量做 / 减配做 / 不做"的成本-价值对比，逼人选择。
- 停止条件：新问题不再改变需求的形状——目标是共识，不是穷尽。
收口
- 产出
docs/features/<slug>/brief.md：保留提需者原话愿景，不加工、不写约束与实现； 附拷问后确认的价值结论与非目标。 - 按项目分支标准创建
feature/<slug>分支并推送远端。 - 太早的想法允许无产出结束——一次好对话是合法输出，直说并停下，不拉分支不写文件。
产出
brief.md、已推送的 feature 分支。下一步：存在未定交互决策则 demo，否则直接 design。
What ships with it
1 file 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.
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.
- 2d ago First seen · 36 lines · 89 tokens per session scan A 9256b61e570c
brainstorm is a skill published in the GitHub repository wallkop/opc-develop (11 stars, last pushed 1mo ago), licensed MIT. It adds 89 tokens to every session and 522 once invoked, about $0.0004 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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