DESIGN.md@design-systems/library/21-hrs-on-the-moonA

DESIGN.md@design-systems/library/21-hrs-on-the-moon from plugin87/ux-ui-agent-skills is a DESIGN.md file: the design rules coding agents follow in that repo.

Install it, pinned
mdr add plugin87/ux-ui-agent-skills/design-systems/library/21-hrs-on-the-moon/DESIGN.md@alpha

Pins alpha in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 14 of 14 checks passed
Kind
DESIGN.md file
Repository
plugin87/ux-ui-agent-skills
Path
design-systems/library/21-hrs-on-the-moon/DESIGN.md
Versions recorded
1
Latest version
alpha, committed Oct 25, 2026
Size
10,140 bytes
Repository stars
3,108
License
MIT

21 Hrs On The Moon (21hrs.space), an Apollo 11 scroll story: black #000000 canvas, warm cream #fff3ea text, FuturaStd 700 uppercase titles with negative tracking, AkkuratMonoLL 300 10px labels, a #d9d9d9 giant MOON wordmark and #e4b592 copper viewfinder corners with a 10px radius.

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

## Overview

21 Hrs On The Moon is a single-screen landing view for an interactive story about the 21 hours of humanity's first Moon landing. The page title is "21 Hours on the Moon". In the capture the screen is almost entirely black with a field of tiny stars and the dark, cratered upper limb of the Moon rising from the bottom. A thin horizontal rule flanks the small line "21HRS ON THE", above the huge wordmark "MOON" whose letterforms fade from light grey into black toward their base. Below it, the centred line reads "Navigate the lunar surface and explore the 21 hours that defined humanity's first Moon landing." At the left are the small mono caption "MISSION" with "Apollo 11", at the right "YEAR" with "1969", and a full-width rule underneath. A bordered button "SCROLL TO LAND" sits in the lower centre, with the note "BEST EXPERIENCED WITH SOUND" beneath it. Three round controls (a menu, a waveform and a play glyph) are at the top left, and four copper corner brackets frame the viewport like a camera viewfinder.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add plugin87/ux-ui-agent-skills/design-systems/library/21-hrs-on-the-moon/DESIGN.md@sha256:98e889bd336bd5b4

The line at the top of this page pins the label alpha, 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_nuachguisw3bjebf.svg)](https://markdownregistry.com/a/art_nuachguisw3bjebf)

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

Versions

The registry has recorded 1 version of this file, committed on Oct 25, 2026.

versioncommittedcommitsizeaudit
alpha latest2026-10-25 2c01a57 10,140 BA view

Audit of the latest version

A  14 of 14 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Size between 200 bytes and 200 KB (10140 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

plugin87/ux-ui-agent-skills · 3,108 stars · license MIT · pushed 2026-10-27 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_nuachguisw3bjebf
GET https://markdownregistry.com/api/v1/resolve?ref=plugin87/ux-ui-agent-skills/design-systems/library/21-hrs-on-the-moon/DESIGN.md
GET https://markdownregistry.com/api/v1/blob/98e889bd336bd5b4cb7841269839275eb16bee3f658dba27f741c1b581df8577

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: what DESIGN.md is and how agents use it · which agent file does what.

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