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 agentmods add skills/vvedantb/eva/animatenpx skills add vvedantb/eva --skill animategit clone --depth 1 https://github.com/vvedantb/evaWhat 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 | $0.00096 | $0.02863 |
| Opus 5 | $0.00048 | $0.01432 |
| Sonnet 5 | $0.00019 | $0.00573 |
| Haiku 4.5 | $0.00010 | $0.00286 |
Grade A, and why
animate 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 2d 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
98% identical to animate — 2 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 — 200 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Building Animations
A construction skill. It does ONE thing: turn a request for motion into an implementation that would survive a strict review. It does not audit a codebase (that's improve-animations), critique a diff (that's review-animations), or hunt for places that could animate (that's find-animation-opportunities).
Operating Posture
You are a senior design engineer building the animation yourself. The bar is Emil Kowalski's animation philosophy — the same bar review-animations enforces. Write it so it passes that review the first time.
Two failure modes, and the first is worse:
- Animating something that shouldn't animate. The gate below exists to produce zero lines of code sometimes. That's a success, not a dodge.
- Animating the right thing with the wrong ingredients —
ease-inon an entrance,scale(0), keyframes on a toast, a duration that makes a dropdown feel sluggish.
Never present motion options as a menu. Make the call, state the reasoning in one line, write the code.
Hard Rules
- Run the sequence in order. Steps 1 and 2 gate everything. Don't reach for a curve before you know whether it animates at all.
- No approximated values. Every curve, duration, and spring config comes from the tables below. Never invent
cubic-bezier(0.4, 0, 0.2, 1)because it looks familiar. - Extend the codebase's tokens, don't fork them. If
--ease-outor a duration scale already exists, use it. Adding a parallel system is a defect. - Reduced motion and hover gating ship with the animation, not as a follow-up.
- Cheapest tool that works. Don't install a motion library for a fade.
The Build Sequence
1. Should this animate at all?
| Frequency | Decision |
|---|---|
| 100+ times/day (keyboard shortcuts, command palette toggle) | No animation. Ever. Stop here. |
| Tens of times/day (hover effects, list navigation) | Near-imperceptible only — fast and subtle, or nothing |
| Occasional (modals, drawers, toasts) | Standard animation |
| Rare / first-time (onboarding, success, celebration) | The delight budget lives here |
What ships with it
1 file 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.
- 2d ago First seen · 200 lines · 96 tokens per session scan A 2a99870e6197
animate is a skill published in the GitHub repository vvedantb/eva (101 stars, last pushed 3d ago), licensed MIT. It adds 96 tokens to every session and 2,863 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 0 findings. It is 98% identical to animate, differing in 2 lines, and is treated as a copy.
Other skills, from other repositories
design-guide
Paperclip UI design system guide for building consistent, reusable frontend components. Use when creating new UI components, modifying existing ones, adding pages or features to the frontend, styling UI elements, or when you need to understand the design language and conventions. Covers: component creation, design…
Shade ShadCN install
Guardrails for running pnpm dlx shadcn@latest add in Shade — never overwrite existing components, fresh branch first, swap raw colours for semantic tokens after integrating. Trigger when the user proposes a shadcn add, or when a fresh ShadCN-shaped file lands in apps/shade/src/components/ui.
chakra-ui-builder
Build responsive, accessible UI components and layouts using Chakra UI v3, install or configure Chakra UI in new and existing projects, and design scalable themes using tokens, semantic tokens, recipes, and slot recipes. Use this skill whenever a user asks to build, create, or generate any UI component, page, form…
material-ui-tailwind
Integrates Material UI with Tailwind CSS v4 using cascade layers (enableCssLayer, @layer order) and documents Tailwind v3 interoperability (preflight, important, injectFirst, portals). Use when combining MUI with Tailwind utilities, slotProps className, or theme token bridges.
frontend-design
Guidance for distinctive, intentional visual design when building new UI or reshaping an existing one. Use whenever the task produces or modifies anything a user will see rendered — websites, landing pages, web apps, dashboards, React/HTML/Vue components, artifacts with visual output, style overhauls, or "make this…
obsidian-layout-adjustment
Workflow for working with the user on changing how Obsidian looks using CSS snippets. Use this whenever the user asks to restyle Obsidian, tune a vault's visual layout, adjust tabs, sidebars, note surfaces, properties, backlinks, graph panes, file explorer rows, icons, links, shadows, active states, or CSS snippets.…