harden SKILL.md skillA

harden from educlopez/ui-craft is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add educlopez/ui-craft/harden@git:20260817.c2d392b

Pins git:20260817.c2d392b in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: educlopez/ui-craft
Path: .codex/skills/harden/SKILL.md
Versions recorded: 5
Latest version: git:20260817.c2d392b, committed Aug 17, 2026
First version recorded: Jun 11, 2026
Size: 4,529 bytes
Repository stars: 425
License: MIT

Production-readiness pass — audits and implements the full non-happy-path matrix: loading skeletons, empty states, error messages, partial data, i18n, offline, permissions, and first-run guidance. Use when preparing a surface for production or when the user says "it crashes on empty data" / "there's no loading state" / "harden this". Invoke when the user asks for harden on their UI, or mentions 'harden' alongside design / UI / frontend work.

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

<!-- HARNESS MIRROR — do not edit here. Canonical source: skills/ or commands/. After editing source, copy into cli/assets/<harness>/ and repo-root harness mirrors. -->

**Context:** this sub-skill is one lens of the broader `ui-craft` skill. If the `ui-craft` skill is also installed, read its SKILL.md first for Discovery + Anti-Slop + Craft Test, then apply the specific lens below.

Harden the UI at `$ARGUMENTS` for production. Load the `ui-craft` skill.

**Coverage matrix — check every key surface:**

1. **Loading** — skeletons match the final layout (no CLS on resolve), shown after ~200ms to avoid flash on fast responses. Never a generic centered spinner when a skeleton is possible.
2. **Empty** — purposeful: one line explaining why it's empty + one clear primary action. Illustration optional, CTA mandatory.
3. **Error** — inline, actionable. "Save failed. Try again / Copy error / Contact support" — never just "Something went wrong." Surface the *what* and the *next step*.
4. **Partial data** — `—` (em dash) for missing metrics, never `N/A` or `null` or `0` when the value is truly unknown.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add educlopez/ui-craft/harden@sha256:2273e4c62d92212e

The line at the top of this page pins the label git:20260817.c2d392b, 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_e356gkjl4plm2ley.svg)](https://markdownregistry.com/a/art_e356gkjl4plm2ley)

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

Versions

The registry has recorded 5 versions of this file, between Jun 11, 2026 and Aug 17, 2026, about one every 17 days.

version	committed	commit	size	audit
git:20260817.c2d392b latest	2026-08-17	c2d392b	4,529 B	A	view · diff
git:20260806.bb71f4d	2026-08-06	bb71f4d	3,078 B	A	view · diff
git:20260725.d9710bc	2026-07-25	d9710bc	3,072 B	A	view · diff
git:20260704.14809b1	2026-07-04	14809b1	3,029 B	A	view · diff
git:20260611.235e1e9	2026-06-11	235e1e9	2,994 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 (4529 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

educlopez/ui-craft · 425 stars · license MIT · pushed 2026-10-30 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_e356gkjl4plm2ley
GET https://markdownregistry.com/api/v1/resolve?ref=educlopez/ui-craft/harden
GET https://markdownregistry.com/api/v1/blob/2273e4c62d92212e8f7327e3097fe741e206d1fc1944a77ded4d69f7d8c2d3fb

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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