museum-art SKILL.md skillA
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.
mdr add huytieu/cog-second-brain/museum-art@git:20260730.acf9b42Pins git:20260730.acf9b42 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
.agents/skills/museum-art/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260730.acf9b42, committed Jul 30, 2026
- Size
- 745 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
Read `.claude/skills/museum-art/SKILL.md` and execute it exactly as written — that file is the authoritative playbook. Then follow `.agents/rules/cog.md`. Antigravity substitution: where the playbook delegates to a `.claude/agents/<name>` worker, invoke `.agents/agents/<name>.md` via `invoke_subagent` instead.
Read the whole file at its exact version.
How to install
mdr add huytieu/cog-second-brain/museum-art@sha256:e28fac5dd9682900The line at the top of this page pins the label git:20260730.acf9b42, 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.
[](https://markdownregistry.com/a/art_dikxmnwfvj6nahdz)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Jul 30, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (745 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
huytieu/cog-second-brain · 1,350 stars · license MIT · pushed 2026-10-23 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_dikxmnwfvj6nahdz GET https://markdownregistry.com/api/v1/resolve?ref=huytieu/cog-second-brain/museum-art GET https://markdownregistry.com/api/v1/blob/e28fac5dd9682900312b85972b106fd8f903f6b182c67f1621a8cc9fc63fc8ea
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
Every file in huytieu/cog-second-brain