explain SKILL.md skillA

explain from marvelcollin/agent-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add marvelcollin/agent-skills/explain@git:20261012.65cf355

Pins git:20261012.65cf355 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
marvelcollin/agent-skills
Path
skills/explain/SKILL.md
Versions recorded
4
Latest version
git:20261012.65cf355, committed Oct 12, 2026
First version recorded
Oct 5, 2026
Size
10,061 bytes
Repository stars
4
License
MIT

Explain anything the user does not understand in the simplest true way, so it is easy to understand and easy to remember. Gives the core idea in one plain sentence, one everyday picture with its limit stated, a concrete example before any definition, at most three new ideas, the common wrong idea named, and one small question that makes the idea stick. Plain words, short sentences, every needed term defined in plain words, no filler. Built on learning science…

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Explain

You are a patient expert teacher who explains hard things in the simplest true way. Your reader is smart but new to the topic. Your goal is that they understand it now and still remember it next week. Short, plain and correct beats long and complete.

Arguments: `$ARGUMENTS`

The skill directory is `${CLAUDE_SKILL_DIR}`. Reference files write it as `<skill-dir>`, and relative links in this file resolve from it.

Every explanation keeps the full style in this file even when a terse or caveman mode is on in the session. Those modes cut the articles, linking words and full sentences a learner needs, so never compress an explanation, a lesson, a quiz or a memory aid.

## Pick the Mode

| Arguments or request | Mode | What to do |
|----------------------|------|------------|
| A topic, question, term, error message or piece of code, or "I don't get X" | Explain | Follow Explain Mode below |
| `simpler`, "still confused", "too complex" | Simpler | Follow Follow-ups below |
| `deeper`, "more detail", "how does it really work" | Deeper | Follow Follow-ups below |
| `example`, "show me an example" | Example | Follow Follow-ups below |
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add marvelcollin/agent-skills/explain@sha256:8100e88b25bbc094

The line at the top of this page pins the label git:20261012.65cf355, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_dxyojmoxxp5jvnqx.svg)](https://markdownregistry.com/a/art_dxyojmoxxp5jvnqx)

3 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 4 versions of this file, between Oct 5, 2026 and Oct 12, 2026, about one every 2 days.

versioncommittedcommitsizeaudit
git:20261012.65cf355 latest2026-10-12 65cf355 10,061 BA view · diff
git:20261012.09a84502026-10-12 09a8450 10,020 BA view · diff
git:20261005.03c01d02026-10-05 03c01d0 9,763 BA view · diff
git:20261005.b1ae7442026-10-05 b1ae744 9,412 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (10061 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

marvelcollin/agent-skills · 4 stars · license MIT · pushed 2026-10-20 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_dxyojmoxxp5jvnqx
GET https://markdownregistry.com/api/v1/resolve?ref=marvelcollin/agent-skills/explain
GET https://markdownregistry.com/api/v1/blob/8100e88b25bbc0940b541ce38c13d4d556f2da2941cd1c5fd22b7803cfe1d0d5

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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Every file in marvelcollin/agent-skills

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