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 2389-research/claude-plugins --skill authoring-motion-diagramsgit clone --depth 1 https://github.com/2389-research/claude-pluginsWrote 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/2389-research/claude-plugins/authoring-motion-diagrams)<a href="https://agentmods.dev/skills/2389-research/claude-plugins/authoring-motion-diagrams"><img src="https://agentmods.dev/badge/skills/2389-research/claude-plugins/authoring-motion-diagrams/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/2389-research/claude-plugins/authoring-motion-diagrams"><img src="https://agentmods.dev/badge/skills/2389-research/claude-plugins/authoring-motion-diagrams.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00054 | $0.00983 |
| Opus 5 | $0.00027 | $0.00491 |
| Sonnet 5 | $0.00011 | $0.00197 |
| Haiku 4.5 | $0.00005 | $0.00098 |
Grade A, and why
authoring-motion-diagrams 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 — 71 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Authoring motion diagrams
Every marketplace entry has one authored scene at scripts/animations/scenes/<plugin>.svg,
shown on that plugin's detail page. docs/plugins/<plugin>/anim.mp4 and anim-poster.png
are derived from it. Never patch the video — change the scene and re-render.
A scene must say what the plugin does: what moves, in what order, and what is different at the end. A scene where things merely move is decoration.
Flow
- Read the plugin's category from
.claude-plugin/marketplace.json, then take that category'smarkandinkfromscripts/animations/palette.js. One accent per scene. - Copy
references/scene-template.svgtoscripts/animations/scenes/<plugin>.svg. - Compose the beats.
references/binding.mdhas the tokens, the beat pattern, and the scene mechanics already in use — reuse one rather than inventing a shape. node scripts/animations/render.js --check— validates the contract in about a second, no Chrome. Run it constantly, not once at the end.node scripts/animations/preview.js <plugin>— one frame, ~1s.AT=0.3for another moment. This catches what no checker can: a label sitting on a connector, a box crossing its frame, a path ending in mid-air.node scripts/animations/render.js <plugin>— mp4 + poster, ~75s.npm run generate && npm test.- Commit the scene, the mp4 and the poster together. They drift the moment they don't.
What --check enforces
| Gate | Rule |
|---|---|
| Cycle | every dur is 8s, repeatCount="indefinite", events placed in keyTimes |
| Counts | keySplines = n−1, values = n, keyPoints = n. A mismatch disables the animation silently |
| Ground | a #faf9f6 rect is the first element |
| Type | every text fill is a legal ink token — 4.5:1 on paper, computed not judged |
| Blocks | solid rects use a category ink, so white type on them clears 4.5:1 |
| Grid | placement on 20px; existing scenes carry a frozen debt in grid-baseline.json and may only improve |
What ships with it
3 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.
- 11d ago First seen · 71 lines · 54 tokens per session scan A d9d357f478d7
authoring-motion-diagrams is a skill published in the GitHub repository 2389-research/claude-plugins (94 stars, last pushed yesterday), licensed MIT. It adds 54 tokens to every session and 983 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 2026-08-30.
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