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 mimukit/skills --skill motionkitgit clone --depth 1 https://github.com/mimukit/skillsWrote 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/mimukit/skills/motionkit)<a href="https://agentmods.dev/skills/mimukit/skills/motionkit"><img src="https://agentmods.dev/badge/skills/mimukit/skills/motionkit/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/mimukit/skills/motionkit"><img src="https://agentmods.dev/badge/skills/mimukit/skills/motionkit.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 | $0.00089 | $0.04336 |
| Opus 5.5 | $0.00036 | $0.01734 |
| Sonnet 5.5 | $0.00018 | $0.00867 |
| Haiku 4.5 | $0.00009 | $0.00434 |
Grade A, and why
motionkit 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 today.
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 — 220 lines — stays where its author put it; the contents beside it link to each section on GitHub.
motionkit
Motion goes wrong in ways no test catches: an entrance that eases in, a popover that grows from scale(0) at its own center, a toast whose keyframes restart when a second toast arrives, a command palette that fades in fifty times a day. Each makes an interface feel slower or cheaper than it is.
motionkit holds one body of rules for those choices, the motion standard, and three modes that apply it. uikit (when installed) decides whether motion fits a screen's design read. motionkit decides how that motion moves.
When this fires
Route by the verb in the ask, read that mode's file, then follow it. Everything in this root applies to every mode; the mode files do not repeat it.
- build. "Animate this dropdown", "add a press effect", "make the drawer slide in", "fix this transition". The verbs "fix", "add", "make", and "animate" run it. It writes code. Mode
build→ read modes/build.md, then follow it. - review. "This animation feels off", "check the motion in this diff", "audit the animations in this app", "what should animate here". "Feels off", "check", "review", "audit", and a motion ask with no verb run it. It writes nothing. A change gets findings and a verdict; a codebase sweep gets a ranked list of fixes and missing motion, with one item crowned. Mode
review→ read modes/review.md, then follow it. - perf. "This transition is janky", "the drawer stutters", "the list drops frames". It names the cause of each dropped frame and writes nothing until the user asks for the fixes. Mode
perf→ read modes/perf.md, then follow it. - lookup. "What's it called when an element slides in and settles". It needs no file. Follow The lookup branch.
Two phrases cross the verb split. "Make the app feel alive" runs review at sweep scale, because it asks where motion belongs. "Fix the jank" runs perf, because the cause comes before any code change.
What ships with it
6 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.
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.
- today First seen · 220 lines · 89 tokens per session scan A 7e3d6f7211ce
motionkit is a skill published in the GitHub repository mimukit/skills (2 stars, last pushed yesterday), licensed MIT. It adds 89 tokens to every session and 4,336 once invoked, about $0.0004 per session on Opus 5.5. 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 2026-10-25.
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