expert-feynman

expert-feynman is a skill for Claude Code, Codex from regen-coordination/org-os-template. It costs 45 tokens per session (1,439 once invoked), scanned A, original, MIT.

A set of thinking and explanation methods based on Richard Feynman’s approach to first principles. First-principles thinking means breaking a problem down to facts and mechanisms instead of relying on assumptions or memorized rules.

In plain words
What is it for?
Use it to learn unfamiliar subjects, explain complex systems clearly, question assumptions, and troubleshoot problems step by step.
Why use it?
It helps make complicated systems easier to understand and exposes reasoning that has not been properly checked. It can also guide systematic debugging.

Skill for Claude CodeCodex

Which agent this was written for is unclear — built for openclaw. Also seen: built for openclaw.

Good fit Use it to learn unfamiliar subjects, explain complex systems clearly, question assumptions, and troubleshoot problems step by step.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/regen-coordination/org-os-template/expert-feynman
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 regen-coordination/org-os-template --skill expert-feynman
Clone the repo
git clone --depth 1 https://github.com/regen-coordination/org-os-template

Made for: Claude Code, Codex.

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 expert-feynman

README.md
[![agentmods](https://agentmods.dev/badge/skills/regen-coordination/org-os-template/expert-feynman/github.svg)](https://agentmods.dev/skills/regen-coordination/org-os-template/expert-feynman)
Your own site
<a href="https://agentmods.dev/skills/regen-coordination/org-os-template/expert-feynman"><img src="https://agentmods.dev/badge/skills/regen-coordination/org-os-template/expert-feynman/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 expert-feynman

Your own site · 80×15
<a href="https://agentmods.dev/skills/regen-coordination/org-os-template/expert-feynman"><img src="https://agentmods.dev/badge/skills/regen-coordination/org-os-template/expert-feynman.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 45 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,439 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 $0.00045 $0.01439
Opus 5 $0.00023 $0.00720
Sonnet 5 $0.00009 $0.00288
Haiku 4.5 $0.00005 $0.00144

Measured 8d ago against content hash 0fb8a9793ad8, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

expert-feynman 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 8d 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.

skills/expert-feynman/SKILL.md · 191 lines

How it starts

The opening of the file, as written. The whole thing — 191 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Expert Module: Richard Feynman

Encodes Richard Feynman's thinking patterns for first-principles analysis and clear explanation.

When to Load

Load this module when:

  • Trying to understand a complex system
  • Learning something new
  • Need to explain a complicated concept simply
  • Debugging or troubleshooting
  • Questioning assumptions

Problem Framing (What → Why):

What-layer questions that arrive here often:

  • "Help me understand [X]" → Why-layer: "Which assumption about X am I most at risk of being wrong about?"
  • "Explain [topic] to me" → Why-layer: "Is there a mechanism I'm accepting on faith that I can't actually verify?"
  • "How does [system] work?" → Why-layer: "Where is my understanding cargo cult vs. genuine?"

When the user presents a What question, ask:

"What would you do differently if you understood this more deeply? What's the hidden assumption you most want to test?"

Domain Boundaries

Core Domain (High Confidence):

  • Understanding complex systems and mechanisms
  • Learning strategies and knowledge acquisition
  • Explaining complicated concepts simply
  • Debugging and troubleshooting (systematic elimination)
  • Detecting cargo cult thinking and surface-level imitation

Extended Domain (Moderate Confidence):

  • Decision-making through first principles analysis
  • Scientific method and hypothesis testing
  • Teaching and communication strategies

Outside Domain:

  • Emotional support or counseling
  • Medical, legal, or financial advice
  • Authority-based or credential-based arguments

Expert Profile

Domain: Understanding Complex Systems, Learning, Explanation

Core Philosophy:

  • "If you can't explain it simply, you don't understand it well enough"
  • "The first principle is that you must not fool yourself—and you are the easiest person to fool"
  • "I'd rather have questions that can't be answered than answers that can't be questioned"

Thinking Style:

  • First principles (rebuild from fundamentals)
  • Analogy-driven explanation
  • Playful curiosity
  • Comfort with not knowing
  • Visual and physical intuition

Read the full file on GitHub · 191 lines

Files

What ships with it

5 files 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.

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. 8d ago First seen · 191 lines · 45 tokens per session scan A 0fb8a9793ad8

Subscribe to this mod's changes

expert-feynman is a skill published in the GitHub repository regen-coordination/org-os-template (5 stars, last pushed 6d ago), licensed MIT. It adds 45 tokens to every session and 1,439 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 2026-09-03.

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