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 app-builders-club/design-builder --skill motiongit clone --depth 1 https://github.com/app-builders-club/design-builderWrote 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/app-builders-club/design-builder/motion)<a href="https://agentmods.dev/skills/app-builders-club/design-builder/motion"><img src="https://agentmods.dev/badge/skills/app-builders-club/design-builder/motion/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/app-builders-club/design-builder/motion"><img src="https://agentmods.dev/badge/skills/app-builders-club/design-builder/motion.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 | $0.00129 | $0.02417 |
| Opus 5 | $0.00064 | $0.01208 |
| Sonnet 5 | $0.00026 | $0.00483 |
| Haiku 4.5 | $0.00013 | $0.00242 |
Grade A, and why
motion 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 8d 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 — 126 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Motion Knowledge Base — for design-builder
You are the motion knowledge layer of design-builder. The sister design skill owns the three-layer architecture (Layer 1 facts → Layer 2 filters → emit). This skill plugs into both:
- Layer 1 (
KB-EXTENSION) — library-level animation knowledge that theanimationsMCP type alone does not cover (easing curves, registration patterns, performance, accessibility). - Layer 2 (Anti-Patterns) — motion-specific anti-slop rules listed in
references/anti-patterns.md.
You activate when:
- A spec generated by
/design_pageor/design_screenlists motion in itsanimation:block, and/buildis now emitting code. /improveis asked to add or fix motion on user code.- The user explicitly asks for animation help on their web app.
- The user asks for a short video — switch to video mode (HyperFrames pipeline).
If motion is not part of the request, do nothing. Don't volunteer animation suggestions from this skill unless the spec calls for them — gratuitous motion is the #1 way design-builder produces AI slop.
Mode router (read first)
| Signal | Mode | Primary refs |
|---|---|---|
| Production web app, React/Next/Svelte/etc., motion is incidental to the UI | web-ui | references/selection.md → pick library → corresponding references/web-animations/*.md |
| User asked for a short video, intro/outro, social ad, product promo, hero loop rendered to MP4/WebM | video | references/video/hyperframes.md + references/video/hyperframes-cli.md |
| Lottie file already exists or the user mentions After Effects / Bodymovin export | either mode | references/web-animations/lottie.md |
| 3D / WebGL hero, product spin, shader plate | web-ui (if interactive) or video (if pre-rendered) | references/web-animations/three.md |
What ships with it
11 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/anti-patterns.md 5.0 KB
- references/selection.md 4.2 KB
- references/video/hyperframes-cli.md 5.0 KB
- references/video/hyperframes.md 8.2 KB
- references/video/tailwind-runtime.md 2.3 KB
- references/web-animations/anime.md 2.3 KB
- references/web-animations/css.md 3.9 KB
- references/web-animations/gsap.md 6.9 KB
- references/web-animations/lottie.md 4.3 KB
- references/web-animations/three.md 4.5 KB
- references/web-animations/waapi.md 3.7 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.
- 8d ago First seen · 126 lines · 129 tokens per session scan A a14cf2ca4f72
motion is a skill published in the GitHub repository app-builders-club/design-builder (4 stars, last pushed 2mo ago), licensed MIT. It adds 129 tokens to every session and 2,417 once invoked, about $0.0006 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.
Other skills, from other repositories
image
Recreate a single flat image as one self-contained HTML page, verified by rendering it and comparing to the image — no capture, no DOM, no HTML input. Use when the user hands you just a picture (a screenshot, a poster, an Instagram/carousel slide, a graphic, a UI mock) and wants it rebuilt, cloned, copied or "made…
artifacts-builder
Suite of tools for creating elaborate, multi-component claude.ai HTML artifacts using modern frontend web technologies (React, Tailwind CSS, shadcn/ui). Use for complex artifacts requiring state management, routing, or shadcn/ui components - not for simple single-file HTML/JSX artifacts.
motion-animations
Use when building website animations, scroll effects, entrance reveals, layout transitions, gesture interactions, parallax, hero choreography, or any animated UI component. Auto-trigger on any website build or frontend feature that involves motion, transitions, or animated elements.
webgl-particle-galaxy
A real-time particle galaxy — tens of thousands of additive-blended GPU points spiraling around a bright core, their orbits solved entirely in the vertex shader (from glVertexID), so the whole cloud draws in one call. Rendered as a single self-contained index.html. Use when the brief asks for a "particle field"…
webgl-liquid-metal
A real-time liquid-metal shader — a domain-warped noise field shaded as molten chrome, with a sweeping specular highlight over an iridescent thin-film (cosine-palette) sheen. No textures. Rendered as a single self-contained index.html. Use when the brief asks for "liquid metal", "molten chrome", "iridescent"…
webgl-neon-grid
A real-time synthwave scene — a perspective floor grid scrolling toward a banded retro sun under a neon starfield, all from one fragment shader. No textures. Rendered as a single self-contained index.html. Use when the brief asks for "synthwave", "outrun", "retro 80s", "neon grid", "perspective grid", "vaporwave", or…