Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add bharat3645/The-Ideal-Harness --skill motion-designgit clone --depth 1 https://github.com/bharat3645/The-Ideal-HarnessWrote 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/bharat3645/the-ideal-harness/motion-design)<a href="https://agentmods.dev/skills/bharat3645/the-ideal-harness/motion-design"><img src="https://agentmods.dev/badge/skills/bharat3645/the-ideal-harness/motion-design/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/bharat3645/the-ideal-harness/motion-design"><img src="https://agentmods.dev/badge/skills/bharat3645/the-ideal-harness/motion-design.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 | $0.00067 | $0.01013 |
| Opus 5 | $0.00034 | $0.00507 |
| Sonnet 5 | $0.00013 | $0.00203 |
| Haiku 4.5 | $0.00007 | $0.00101 |
Grade A, and why
motion-design 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 11d 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.
How it starts
The opening of the file, as written. The whole thing — 82 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Motion design
Static-visual taste (layout, color, type, spacing) is design-critique's job. This skill is
the motion-specific fourth axis that skill doesn't cover: should this animate at all, and if
so, how — adapted from kylezantos/design-motion-principles (MIT), which distills the
publicly published work of three designers. The three-lens framing below is that skill's
interpretation, named in tribute — not authored or endorsed by the designers themselves.
Step 0 — pick a mode
- Create: "build", "animate this", "add a transition", "make it feel..." → write motion.
- Audit: "review", "is this motion good", "check the animations" → evaluate existing motion.
- Ambiguous → ask which, don't guess.
The three lenses — weight by context, don't apply one universally
| Lens | Question it asks | Best for |
|---|---|---|
| Restraint & speed (Emil Kowalski's public work — Linear, ex-Vercel) | "Should this animate at all?" | Productivity tools, high-frequency interactions |
| Production polish (Jakub Krehel's public work) | "Is this subtle enough for production?" | Shipped consumer apps, professional refinement |
| Creative experimentation (Jhey Tompkins's public work) | "What could this become?" | Portfolios, kids' apps, marketing delight moments |
A SaaS dashboard should default restraint-primary, polish-secondary, experimentation only for empty states. A kids' app inverts that — polish and delight lead, restraint only for high-frequency in-game interactions. State which lens leads before writing or judging a single animation; the same modal deserves a different verdict in each context.
The frequency gate (the one rule that's closer to universal)
Before adding or approving any animation, ask how often the user triggers it:
| Frequency | Recommendation |
|---|---|
| Rare (monthly) | Delightful, expressive motion welcome |
| Occasional (daily) | Subtle, fast |
| Frequent (100s/day) | No animation, or an instant transition |
| Keyboard-initiated | Never animate |
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.
- 11d ago First seen · 82 lines · 67 tokens per session scan A d6ac2d8184d8
motion-design is a skill published in the GitHub repository bharat3645/The-Ideal-Harness (5 stars, last pushed yesterday), licensed MIT. It adds 67 tokens to every session and 1,013 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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