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explain-codebase SKILL.md skillA

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

Install it, pinned

mdr add marcellocurto/skills/explain-codebase@git:20261029.444423a

Pins git:20261029.444423a in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: marcellocurto/skills
Path: skills/explain-codebase/SKILL.md
Versions recorded: 6
Latest version: git:20261029.444423a, committed Oct 29, 2026
First version recorded: Aug 20, 2026
Size: 4,637 bytes
Repository stars: 3
License: none declared

Trace and explain how an existing code path or subsystem works. Use when the user asks how some code, feature, or flow works, or where something happens.

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 Codebase

Explain current behavior at the level of detail the user needs. Follow what the system actually does; do not replace the explanation with annotated code, design criticism, or invented history.

## Boundaries

- This skill is read-only. Do not edit code or documentation.
- Explain observed behavior before judging it. If the request also asks for problems or improvements, finish a self-contained explanation first, then use a read-only audit skill such as `audit-code-complexity`, `blast-radius-audit`, or `test-quality-audit`, and keep its findings separate.
- A failing, incorrect, or slow path can still be the subject of a read-only explanation. Use `diagnosing-bugs` when the user asks to investigate the cause of a reported problem or to fix it, rather than merely to explain the path. Preserve investigation-only and no-edit boundaries; a request to establish a cause does not authorize a fix.
- State historical motivation only when an ADR, issue, commit, documentation, or another authoritative record supports it. Otherwise distinguish current purpose from inferred rationale.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add marcellocurto/skills/explain-codebase@sha256:2f79e6e24f006a41

The line at the top of this page pins the label git:20261029.444423a, 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](https://markdownregistry.com/badge/art_wbm5s4navmdrud7o.svg)](https://markdownregistry.com/a/art_wbm5s4navmdrud7o)

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

Versions

The registry has recorded 6 versions of this file, between Aug 20, 2026 and Oct 29, 2026, about one every 14 days.

version	committed	commit	size	audit
git:20261029.444423a latest	2026-10-29	444423a	4,637 B	A	view · diff
git:20261002.a2929d4	2026-10-02	a2929d4	4,547 B	A	view · diff
git:20260908.e500868	2026-09-08	e500868	4,396 B	A	view · diff
git:20260906.ccd7ead	2026-09-06	ccd7ead	4,430 B	A	view · diff
git:20260820.df9ee34	2026-08-20	df9ee34	4,242 B	A	view · diff
git:20260820.c138845	2026-08-20	c138845	4,456 B	A	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 (4637 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

marcellocurto/skills · 3 stars · license none declared · pushed 2026-10-29 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_wbm5s4navmdrud7o
GET https://markdownregistry.com/api/v1/resolve?ref=marcellocurto/skills/explain-codebase
GET https://markdownregistry.com/api/v1/blob/2f79e6e24f006a417962ebf5b2b065d32f41f7fa185fdf354082772f59369bad

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.