feynman-explainer-tool

feynman-explainer-tool is a skill for Claude Code from Liuziyu77/gene-skill. It costs 160 tokens per session (1,816 once invoked), scanned A, original, MIT.

A teaching workflow based on the Feynman technique: explaining a difficult idea in simple language to test whether it is really understood.

In plain words
What is it for?
Use it to prepare explanations, tutorials, talks, or articles, translate technical documents or papers, and identify terms, weak points, and misleading comparisons.
Why use it?
It helps reveal gaps in understanding before turning technical material into an explanation for people without specialist knowledge.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter.

Good fit Use it to prepare explanations, tutorials, talks, or articles, translate technical documents or papers, and identify terms, weak points, and misleading comparisons.

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Install with agentmods
npx agentmods add skills/liuziyu77/gene-skill/feynman-explainer-tool
Install

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.

Any agent
npx skills add Liuziyu77/gene-skill --skill feynman-explainer-tool
Clone the repo
git clone --depth 1 https://github.com/Liuziyu77/gene-skill

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 feynman-explainer-tool

README.md
[![agentmods](https://agentmods.dev/badge/skills/liuziyu77/gene-skill/feynman-explainer-tool/github.svg)](https://agentmods.dev/skills/liuziyu77/gene-skill/feynman-explainer-tool)
Your own site
<a href="https://agentmods.dev/skills/liuziyu77/gene-skill/feynman-explainer-tool"><img src="https://agentmods.dev/badge/skills/liuziyu77/gene-skill/feynman-explainer-tool/github.svg" alt="Measured on agentmods" height="20"></a>

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Your own site · 80×15
<a href="https://agentmods.dev/skills/liuziyu77/gene-skill/feynman-explainer-tool"><img src="https://agentmods.dev/badge/skills/liuziyu77/gene-skill/feynman-explainer-tool.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 160 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,816 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.
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 $0.00160 $0.01816
Opus 5 $0.00080 $0.00908
Sonnet 5 $0.00032 $0.00363
Haiku 4.5 $0.00016 $0.00182

Measured 9d ago against content hash da0ec7364558, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

feynman-explainer-tool 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 9d 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.

examples/feynman-explainer-tool/SKILL.md · 161 lines

How it starts

The opening of the file, as written. The whole thing — 161 lines — stays where its author put it; the contents beside it link to each section on GitHub.

费曼讲解器

「如果你不能简单地解释它,你就没有真正理解它。」

这个 Skill 不是帮你给复杂概念配上漂亮的 PPT——它帮你搞清楚你是否真的理解了你要讲的东西,然后再让你讲给别人听。


触发条件

  • 需要向非专业受众解释复杂概念
  • 需要为演讲/文章/教程构建解释框架
  • 用户怀疑自己「以为懂了但其实没懂」
  • 需要把技术文档/论文翻译成可理解的语言

核心工作流(T1)

Phase 0:理解深度自测(费曼先行)

在讲解之前,先测试讲解者的理解深度。

向用户提出以下问题(选最难的一个):

  1. 「用一个 12 岁孩子能理解的比喻,解释这个概念的核心机制」
  2. 「这个概念在什么情况下会失效或失准?」
  3. 「如果你只能用三个词描述这个概念的本质,是哪三个词?」

评估结果:

  • 用户能回答 → 说明理解有基础,进入 Phase 1 构建讲解
  • 用户答不上来 → 启动「苏格拉底追问模式」(突变基因 M1),先帮用户理解,再讲解

Phase 1:受众定位(工具纪律)

明确两件事(不超过 2 个问题):

  1. 目标受众:他们已经知道什么?不知道什么?(决定从哪里「接入」)
  2. 讲解目的:让他们「听懂了点头」还是「能自己解释给别人」?(决定深度)

Phase 2:费曼式结构构建

黄金路径(费曼,显性):从已知到未知,每一步只引入一个新概念。

步骤 A:找「接入点」
  受众已知的最相关概念是什么?从这里出发,而不是从定义出发。

步骤 B:一个类比
  找到一个目标受众生活经验中的具体类比。
  类比必须在核心机制上准确,可以在细节上不完整。
  [测试:如果用类比来理解,会产生哪些误导?提前说清楚。]

步骤 C:揭示差异
  「和你熟悉的 X 一样,但有一个关键的不同:____」
  这是建立准确理解的核心步骤。

步骤 D:后果推导
  从这个理解出发,能推导出哪些结论?
  让受众自己推导,比直接告诉他们更有记忆效果。

工具纪律补充(explainer-skill,显性)

  • 每个 section 不超过 3 个核心概念
  • 有「检查理解」节点(提问)
  • 结尾有「如果你真的理解了,你应该能回答:____」

Phase 3:质量验证(费曼标准)

完成草稿后,执行三项检查:

检查一:术语清单 列出讲解中用到的所有专业术语,逐一检查:是否每个都被解释过,且解释不依赖其他专业术语?

检查二:类比反测 列出所有类比,逐一检查:使用这个类比会产生哪些误导?是否在讲解中已经指出?

检查三:最难问题 想象一个聪明但完全不了解背景的人,他会问什么让你无法回答的问题?如果想不出来,说明你的讲解过于简化,遗漏了真正困难的部分。


突变基因(M1):苏格拉底追问模式

来自:定向突变(用户不理解时主动追问帮助理解)

触发:Phase 0 评估发现用户理解不足时,或用户主动说「我不太理解这个概念」。

操作

不直接给出解释,而是先问:
  Q1: 「你目前对这个概念的理解是什么?哪怕不完整也说说看」
  Q2: 「你觉得哪里最难理解?」
  Q3: 「你能想到任何和它相似的东西吗?」

根据用户回答,识别「理解的断点」:
  → 找到断点后,针对断点构建最小解释(而非全面解释)
  → 解释完成后再问「现在你觉得哪里还不通?」
  → 循环,直到用户能自己给出一个粗糙但方向正确的类比

苏格拉底模式的原则:
  - 不做长篇讲解,每次只解释一个「断点」
  - 始终以用户的回答为下一步的起点
  - 目标:用户自己说出答案,而不是被动接受讲解

激活条件:用户无法回答 Phase 0 的自测问题,或主动要求「帮我搞懂」。 不激活条件:用户已经理解,只需要帮忙组织讲解给他人。


表达 DNA(来自费曼,显性)

维度 合成体表达方式
起点 永远从受众「已知的」出发,不从定义出发
类比密度 高——每个核心概念至少一个类比
确定性 对能解释清楚的:自信。对解释不了的:直接说「这部分我也没想清楚」
禁忌 「显而易见」「众所周知」「如你所知」——如果这些词后面的内容真的显而易见,就不需要讲了

诚实边界

  1. 适合「可用类比解释的」概念;某些极度抽象的数学对象(如高维拓扑)类比效果有限
  2. 苏格拉底追问模式需要用户愿意配合,不适合只想要「快速答案」的场景
  3. 工具不能替代讲解者对领域的真实理解——如果讲解者本身不理解,工具也无法凭空生成准确的解释

Read the full file on GitHub · 161 lines

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. 9d ago First seen · 161 lines · 160 tokens per session scan A da0ec7364558

Subscribe to this mod's changes

feynman-explainer-tool is a skill published in the GitHub repository Liuziyu77/gene-skill (56 stars, last pushed 4mo ago), licensed MIT. It adds 160 tokens to every session and 1,816 once invoked, about $0.0008 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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