fable-harness: Skill for Claude Code

.claude/skills/adversarial-review/SKILL.md

adversarial-review is a skill for Claude Code from Miguok/fable-harness. It costs 142 tokens per session (1,010 once invoked), scanned A, original, MIT.

A multi-reviewer process that sends an important conclusion or design to three independent critics: a skeptic, a security reviewer, and a simplifier.

In plain words
What is it for?
Use it for architecture decisions, bug root-cause findings, security judgments, or other conclusions that could affect production, requiring a majority of reviewers to accept them.
Why use it?
It reduces the chance that an apparently reasonable but incorrect conclusion is accepted without enough challenge.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

This is Miguok/fable-harness's own configuration. It tells Claude Code how to work on fable-harness itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything fable-harness configures →

Reuse

Borrowing it

Nothing to install: this file belongs to Miguok/fable-harness. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/Miguok/fable-harness/main/.claude/skills/adversarial-review/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/Miguok/fable-harness

Made for: Claude Code.

Wrote 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.

agentmods badge for adversarial-review

README.md
[![agentmods](https://agentmods.dev/badge/skills/miguok/fable-harness/adversarial-review/github.svg)](https://agentmods.dev/skills/miguok/fable-harness/adversarial-review)
Your own site
<a href="https://agentmods.dev/skills/miguok/fable-harness/adversarial-review"><img src="https://agentmods.dev/badge/skills/miguok/fable-harness/adversarial-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.

agentmods 80×15 button for adversarial-review

Your own site · 80×15
<a href="https://agentmods.dev/skills/miguok/fable-harness/adversarial-review"><img src="https://agentmods.dev/badge/skills/miguok/fable-harness/adversarial-review.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 142 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,010 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00142 $0.01010
Opus 5 $0.00071 $0.00505
Sonnet 5 $0.00028 $0.00202
Haiku 4.5 $0.00014 $0.00101

Measured 10d ago against content hash 8af16c073453, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

adversarial-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 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.

.claude/skills/adversarial-review/SKILL.md · 43 lines

What it actually says

多方抗辯流程(adversarial-review)

目的

防止「聽起來合理但其實是錯的」結論被採信。單一模型的自我檢查會系統性偏袒自己的結論,所以用三個獨立、不同鏡頭、預設立場為推翻的子代理交叉審。

執行步驟

  1. 整理待審包:把待審結論寫成一段自足的陳述,包含:

    • 結論本身(一句話)
    • 依據的證據(file:line、測試輸出、量測值)
    • 影響範圍(改了什麼、誰依賴它)
    • 待審對象若是多條獨立發現(如審查報告的 N 條 findings):逐條各自抗辯、不得打包成一個總結論——打包會稀釋每條的審查解析度。
  2. 同一則訊息平行派出三個反方(必須用 Agent 工具、subagent_type 分別為 skepticred-teamsimplifier,一次三發不得串行)。 委派抗辯三反方(skeptic/red-team/simplifier)一律明指 model: opus;唯一例外:主迴圈模型 ID 含 opus 或 fable 時可不指定 model(繼承主迴圈);無法判斷主迴圈是誰→用 opus。(抗辯裁決由主迴圈自做,不受此限。)每個 agent 的 prompt = 待審包原文 + 該鏡頭的任務指示。逐條抗辯時每條發現固定耗 3 個子代理(三鏡頭),單輪平行子代理總數上限 6=一輪最多 2 條發現;更多條就分批送審,批與批的結論分開回報、不合併。

  3. 裁決(過半存活制)

    • 3 票 SURVIVED → confirmed,可直接採信
    • 2 票 SURVIVED → confirmed,但必須把那 1 票 REFUTED 的理由列入風險清單回報用戶
    • ≤1 票 SURVIVED → 結論擋回,依 REFUTED 理由修正後重新送審
  4. Loop-until-dry 與規模校準:影響生產/全域佈署/資料安全的重大結論——修正後重審,直到連續 2 輪無新 REFUTED 理由才收工;其餘結論一輪三鏡頭即收工。無法明確排除上述影響者,視同重大。每輪把「已審過的理由」附進 prompt 避免重複發現。

  5. 回報格式(給用戶的最終訊息必含):

    鏡頭 verdict 關鍵理由
    skeptic ... ...
    red-team ... ...
    simplifier ... ...

    加一行結論:抗辯結果:N/3 存活 → confirmed / 擋回(原因)

禁止事項

  • 不得因為趕時間跳過任何一個鏡頭。
  • 不得把三個鏡頭合併成一個 agent 跑(獨立性是抗辯的前提)。
  • REFUTED 理由不得默默吞掉,必須回報或修正。
Changes

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.

  1. 10d ago First seen · 43 lines · 142 tokens per session scan A 8af16c073453

Subscribe to this mod's changes

adversarial-review is a skill published in the GitHub repository Miguok/fable-harness (202 stars, last pushed 3d ago), licensed MIT. It adds 142 tokens to every session and 1,010 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.