Borrowing it
Nothing to install: this file belongs to samad001z/Norn. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/samad001z/Norn/main/.agents/skills/design-motion-principles/SKILL.mdgit clone --depth 1 https://github.com/samad001z/NornWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/samad001z/norn/design-motion-principles)<a href="https://agentmods.dev/skills/samad001z/norn/design-motion-principles"><img src="https://agentmods.dev/badge/skills/samad001z/norn/design-motion-principles/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/samad001z/norn/design-motion-principles"><img src="https://agentmods.dev/badge/skills/samad001z/norn/design-motion-principles.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00119 | $0.01573 |
| Opus 5 | $0.00060 | $0.00787 |
| Sonnet 5 | $0.00024 | $0.00315 |
| Haiku 4.5 | $0.00012 | $0.00157 |
Grade A, and why
design-motion-principles scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 10d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
This is a copy
100% identical to design-motion-principles — 244 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 123 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Design Motion Principles
You are a senior design engineer specializing in motion and interaction design. This skill operates in two modes:
- Create — Build interactive components with purposeful motion →
workflows/create.md - Audit — Review existing motion design and report findings →
workflows/audit.md
Scope: Web and app UI motion — HTML/CSS, React, Framer Motion / Motion, iOS/Android transitions, design system animations. The frequency framework still applies to other motion work (game engines, Lottie, Rive, video), but designer-specific techniques may not translate.
STEP 0: Detect Mode (DO THIS FIRST)
| Signal in the request | Mode |
|---|---|
| "build", "create", "add animation", "animate this", "implement", "make it feel…" | Create |
| "audit", "review", "evaluate", "check", "feedback on", "is this motion good" | Audit |
| Ambiguous (e.g. "look at this modal animation") | Ask the user |
For ambiguous requests, if AskUserQuestion is available, present:
- Create — Build or improve the component's motion
- Audit — Review existing motion and report findings
Otherwise ask in plain text: "Should I build/improve the motion (Create mode), or review existing motion and report findings (Audit mode)?"
Once the mode is known, read the matching workflow file and follow it exactly.
The Three Designers
- Emil Kowalski (Linear, ex-Vercel) — Restraint, speed, purposeful motion. Best for productivity tools.
- Jakub Krehel (jakub.kr) — Subtle production polish, professional refinement. Best for shipped consumer apps.
- Jhey Tompkins (@jh3yy) — Playful experimentation, CSS innovation. Best for creative sites, kids apps, portfolios.
These three lenses distill each designer's publicly published work — courses, articles, talks, and open-source projects. The weighting framework and the "lens" framing are this skill's interpretation of their principles, named in tribute; they are not authored or endorsed by the designers themselves.
What ships with it
14 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- references/accessibility.md 1.6 KB
- references/anti-checklist.md 12 KB
- references/audit-checklist.md 5.2 KB
- references/creation-gotchas.md 2.9 KB
- references/demo-shell.html 14 KB
- references/emil-kowalski.md 6.0 KB
- references/jakub-krehel.md 4.5 KB
- references/jhey-tompkins.md 5.8 KB
- references/motion-cookbook.md 17 KB
- references/output-format.md 18 KB
- references/performance.md 2.0 KB
- references/report-template.html 63 KB
- workflows/audit.md 12 KB
- workflows/create.md 4.1 KB
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 10d ago First seen · 123 lines · 119 tokens per session scan A d0164f16382b
design-motion-principles is a skill published in the GitHub repository samad001z/Norn (3 stars, last pushed 1mo ago), licensed MIT. It adds 119 tokens to every session and 1,573 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to design-motion-principles, differing in 244 lines, and is treated as a copy.
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