designer SKILL.md skillA
designer from pierry/harness-kit is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add pierry/harness-kit/designer@git:20260713.2e25692Pins git:20260713.2e25692 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- pierry/harness-kit
- Path
.claude/agents/staff-software-engineer/skills/designer/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260713.2e25692, committed Jul 13, 2026
- First version recorded
- Jun 15, 2026
- Size
- 22,130 bytes
- Repository stars
- 4
- License
- MIT
Visual + UX design defaults for new UIs. Material Design 3, dark/light theme, modern type, Behance-grade polish, i18n (en, pt-BR, es), context-aware favicon. No emojis and no em-dashes; use MD3/modern icons instead. Apply when building something new. Project conventions in .claude/conventions/web.md override these defaults.
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
Designer conventions. Apply when SSE builds something **new** with a UI (new app, page, feature,
landing). Layers on top of the area skill (web/mobile), does not replace it. Project override:
`{repo}/.claude/conventions/web.md` wins. Match existing design system if repo already has one; only
green-field gets these defaults.
## READ FIRST: Material Design 3 is non-negotiable
Every visual surface this skill touches **must** be Material Design 3. Not "M3-inspired", not "close
enough". M3 is the system: token-driven color roles, the shape scale, tonal elevation, state layers,
and motion. If you are about to write a color, a border, a radius, or a callout, it comes from M3,
not from instinct or a CMS habit. This rule has been broken before; do not break it again.
**Before you ship any surface, self-check against these top offenders. Each one is a hard rule with
its own section below; this is the unmissable summary, not the exception list.**
- **No colored left-border accent bars.** A `border-left: 3px/4px solid var(--primary)` on a card,
hint, callout, banner, or "supporting" box is forbidden. It collides with the shape-scale radius
…Read the whole file at its exact version.
How to install
mdr add pierry/harness-kit/designer@sha256:709814b6df515bbdThe line at the top of this page pins the label git:20260713.2e25692, 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_vug7xqsfnn4qucrh)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Jun 15, 2026 and Jul 13, 2026, about one every 7 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260713.2e25692 latest | 2026-07-13 | 2e25692 | 22,130 B | A | view · diff |
| git:20260624.23d84de | 2026-06-24 | 23d84de | 15,987 B | A | view · diff |
| git:20260619.6bbf4e6 | 2026-06-19 | 6bbf4e6 | 14,098 B | A | view · diff |
| git:20260619.a36e10d | 2026-06-19 | a36e10d | 11,967 B | A | view · diff |
| git:20260615.b983dc2 | 2026-06-15 | b983dc2 | 8,875 B | A | view |
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 (22130 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
pierry/harness-kit · 4 stars · license MIT · pushed 2026-10-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_vug7xqsfnn4qucrh GET https://markdownregistry.com/api/v1/resolve?ref=pierry/harness-kit/designer GET https://markdownregistry.com/api/v1/blob/709814b6df515bbd5eac4418e0777548704b94d4fc11191ead93aa8a28514616
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 pierry/harness-kit
Every file in pierry/harness-kit