prototype-craft SKILL.md skillA

prototype-craft from jnpiyush/agentx is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add jnpiyush/agentx/prototype-craft@git:20260917.081ab7f

Pins git:20260917.081ab7f in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
jnpiyush/agentx
Path
.github/skills/design/prototype-craft/SKILL.md
Versions recorded
5
Latest version
git:20260917.081ab7f, committed Sep 17, 2026
First version recorded
Mar 8, 2026
Size
5,855 bytes
Repository stars
19
License
Apache-2.0

Craft visually polished, production-quality HTML/CSS prototypes with modern styling, typography, color theory, and micro-interactions. Use when building UX deliverables that need visual polish beyond wireframes, implementing color systems, typography scales, elevation shadows, or smooth transitions for interactive prototypes.

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

# Prototype Craft

Build beautiful, interactive HTML/CSS prototypes that look and feel like real products -- not wireframes.

## When to Use This Skill

- Building HTML/CSS prototypes that need production-quality visual polish
- Implementing color palettes, typography scales, and spacing systems
- Adding micro-interactions, transitions, and elevation shadows
- Crafting responsive layouts with modern CSS (Grid, Flexbox, custom properties)
- Polishing UX deliverables beyond skeletal wireframes

## Core Rules

1. **Visual polish first** -- prototypes MUST look production-quality, not skeletal
2. **Modern CSS** -- use CSS Grid, Flexbox, custom properties, clamp(), container queries
3. **Typography** -- use font pairing (max 2-3 families), proper scale (1.25-1.333 ratio), line-height 1.5-1.75
4. **Color system** -- define palette with CSS custom properties: primary, secondary, neutral, success, warning, error + tints/shades
5. **Spacing rhythm** -- use consistent 4px/8px base grid; spacing scale: 4, 8, 12, 16, 24, 32, 48, 64, 96
6. **Depth and shadow** -- layered box-shadows for elevation (sm, md, lg, xl); subtle borders for separation
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add jnpiyush/agentx/prototype-craft@sha256:1e4bb8f1a0a9cf2b

The line at the top of this page pins the label git:20260917.081ab7f, 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_zjv2u5kmgbpkqb5a.svg)](https://markdownregistry.com/a/art_zjv2u5kmgbpkqb5a)

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

Versions

The registry has recorded 5 versions of this file, between Mar 8, 2026 and Sep 17, 2026, about one every 48 days. Its first recorded version is graded B and its latest A.

versioncommittedcommitsizeaudit
git:20260917.081ab7f latest2026-09-17 081ab7f 5,855 BA view · diff
git:20260517.4703a792026-05-17 4703a79 8,912 BB view · diff
git:20260317.59594052026-03-17 5959405 8,597 BB view · diff
git:20260309.113ed302026-03-09 113ed30 8,257 BB view · diff
git:20260308.65586be2026-03-08 65586be 8,274 BB 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 (5855 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

jnpiyush/agentx · 19 stars · license Apache-2.0 · pushed 2026-11-04 · branch master

API

GET https://markdownregistry.com/api/v1/artifacts/art_zjv2u5kmgbpkqb5a
GET https://markdownregistry.com/api/v1/resolve?ref=jnpiyush/agentx/prototype-craft
GET https://markdownregistry.com/api/v1/blob/1e4bb8f1a0a9cf2b50d1eb2ee633eec2fa667b7e489488e8c4be1891fa9c3de2

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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