Home / huytieu / cog-second-brain · GitHub

museum-art SKILL.md skillA

This file is byte-identical to the first copy the registry indexed. Same content hash, so the same checks give both the same grade.

museum-art from huytieu/cog-second-brain is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add huytieu/cog-second-brain/museum-art@git:20260727.74a0cf7

Pins git:20260727.74a0cf7 in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: huytieu/cog-second-brain
Path: .claude/skills/museum-art/SKILL.md
Versions recorded: 1
Latest version: git:20260727.74a0cf7, committed Jul 27, 2026
Size: 10,474 bytes
Repository stars: 1,350
License: MIT

Source authentic, high-res PUBLIC-DOMAIN artwork from museum open-access APIs (Met, Cleveland, SMK, Rijksmuseum, NGA, Art Institute of Chicago, Getty, Smithsonian) instead of AI-generated or generic-stock imagery. The default move whenever a visual needs an aesthetic, credible image (blog heroes, decks, social cards, essay/spec figures). Verified keyless recipes + licensing rules inside.

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

# museum-art: Public-Domain Artwork for Visuals

> Standing rule (adopted 2026-07-24, from Eric Li's post on museum open-access): **whenever a visual needs a real image with aesthetic weight, source public-domain museum artwork first** - over AI-generated imagery and over generic stock. Curated, historically significant art reads as credible and sophisticated; AI-gen reads as slop. This stacks with, and reinforces, the `no-ai-slop` skill and your house image style. It does NOT replace the generative `editorial-illustrations` skill (that owns claim-driven diagrams/figures) or your house chart style - use museum art for photographic/hero/decorative/mood imagery, generative figures for data and concept diagrams.

## When to reach for this
- Blog post hero images, section breaks, mood imagery (the blog-publish image step).
- Deck/slide backgrounds and section dividers, social cards, essay figures, spec cover art.
- Any time the instinct is "generate an image" for something decorative or evocative. Stop and pull a real painting instead.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add huytieu/cog-second-brain/museum-art@sha256:696f91435245225b

The line at the top of this page pins the label git:20260727.74a0cf7, 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_ykkuoemq4tkteu2f.svg)](https://markdownregistry.com/a/art_ykkuoemq4tkteu2f)

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

Versions

The registry has recorded 1 version of this file, committed on Jul 27, 2026.

version	committed	commit	size	audit
git:20260727.74a0cf7 latest	2026-07-27	74a0cf7	10,474 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 (10474 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

huytieu/cog-second-brain · 1,350 stars · license MIT · pushed 2026-10-23 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_ykkuoemq4tkteu2f
GET https://markdownregistry.com/api/v1/resolve?ref=huytieu/cog-second-brain/museum-art
GET https://markdownregistry.com/api/v1/blob/696f91435245225bcd8fbdb99ffa02eb9be4263b98c6c7d2231e0f29a996f845

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.

More from huytieu/cog-second-brain

auto-research SKILL.md skill

huytieu/cog-second-brain · .agents/skills/auto-research/SKILL.md · Deep strategic research engine — decomposes questions into parallel research threads, spawns multiple agents, and…