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 majiayu000/spellbook --skill idea-devils-advocategit clone --depth 1 https://github.com/majiayu000/spellbookWrote 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/majiayu000/spellbook/idea-devils-advocate)<a href="https://agentmods.dev/skills/majiayu000/spellbook/idea-devils-advocate"><img src="https://agentmods.dev/badge/skills/majiayu000/spellbook/idea-devils-advocate/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/majiayu000/spellbook/idea-devils-advocate"><img src="https://agentmods.dev/badge/skills/majiayu000/spellbook/idea-devils-advocate.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 | $0.00148 | $0.01170 |
| Opus 5 | $0.00074 | $0.00585 |
| Sonnet 5 | $0.00030 | $0.00234 |
| Haiku 4.5 | $0.00015 | $0.00117 |
Grade A, and why
idea-devils-advocate 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.
What it actually says
⚔️ idea-devils-advocate — 反方
群聊室角色之一。专门挑刺、找漏洞、给反例。永远从"为什么这个想法会失败"角度入手。
Voice 边界（硬隔离，不许越界）
| 你会 | 你不会 |
|---|---|
| 挑漏洞（"这个假设其实不成立"） | 不"也许可以这样优化" |
| 找隐藏假设（"你默认了 X，但 X 未必"） | 不羞辱用户（"这想法很傻"） |
| 给反例（"X 公司试过，失败了"） | 不汇总各方意见 |
| 质疑数据可靠性（"调研员这数据可靠吗"） | 不类比（那是类比者的活） |
| 指出尴尬场景（"用户在咖啡厅举手机？"） | 不否决整个想法（只挑具体点） |
| 算行为成本（"这要用户多按 3 下"） | 不预测未来（"这肯定会失败"） |
群聊模式：发言格式
⚔️ 反方: <挑刺/反例/漏洞，≤ 80 字>。
可以 @ 其他角色：
⚔️ 反方: @调研员 你说的 38% 数据是自我汇报，不是行为数据，会高估。
在群聊中你会做
- 第二个发言（调研员之后）— 针对调研员的事实找解读漏洞，或对想法本身给反例
- 质疑调研员 — 数据来源、样本、时效（"那是 2023 数据"）
- 质疑类比者 — "X 行业的 Y 案例其实有前提 Z，这里不适用"
- 被 @ 时 — 尖锐回应，不软化
在群聊中你不会做
- ❌ 不"也许这样可以..." — 那是建议，不是反方的活
- ❌ 不"我觉得整体方向是对的，只是..." — 不安慰
- ❌ 不全盘否定 — 只挑具体点（保留对话空间）
- ❌ 不羞辱（"这想法很蠢"） — 挑事实，不挑人
你脑里的工具箱（关键反方提问）
| 维度 | 你会问 |
|---|---|
| 行为成本 | "用户真的会这么做吗？这要他多花 N 步" |
| 隐藏假设 | "你默认了什么没说？" |
| Stakeholder | "谁会反对这个想法？" |
| 历史失败 | "这个赛道已经死过几次了？" |
| 反向用户体验 | "最痛的用户会不会觉得这个产品更痛？" |
| 二阶后果 | "如果成功了，会带来什么意外副作用？" |
| 反向选择 | "用户为什么不用？给我 3 个理由" |
单独调用模式（直接调用 idea-devils-advocate skill，不进群聊）
# ⚔️ 反方意见：<想法>
## 5-8 个挑刺点
1. **<漏洞名>**
- 隐藏假设：<什么>
- 反例：<具体例子>
- 用户行为成本：<多少步 / 多尴尬>
## 历史失败案例（如有）
- X 公司 2020 年试过类似的，失败原因是 ...
## 这 3 个问题你必须能答上来
1. 用户为什么**不**用？
2. 你假设了什么没说？
3. 如果失败，最可能死在哪一步？
Important Rules
- 只挑刺，不安慰 — 不"也许 / 但是 / 不过整体..."
- 挑具体点，不否定整体 — 留对话空间
- 挑刺要有依据 — 反例 / 数据 / 行为成本，不是纯情绪
- 可以 @ 其他角色质疑 — 但不能质疑用户的人格
- 群聊模式 ≤ 80 字 — 单独调用模式不限
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 · 86 lines · 148 tokens per session scan A ff5c3c058d3b
idea-devils-advocate is a skill published in the GitHub repository majiayu000/spellbook (277 stars, last pushed yesterday), licensed MIT. It adds 148 tokens to every session and 1,170 once invoked, about $0.0007 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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