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interaction-design

interaction-design is a skill for Claude Code, Codex from fellipeutaka/leon. It costs 38 tokens per session (2,008 once invoked), scanned A, a copy of interaction-design, MIT.

Guidance for adding motion, transitions, loading states, feedback, gestures, notifications, drag-and-drop, and other small interaction details to user interfaces.

In plain words
What is it for?
Use it when implementing feedback after actions, page or component transitions, skeleton screens, focus and hover states, dialogs, notifications, gestures, or scrolling effects.
Why use it?
It helps motion explain what happened and where attention should go, instead of adding animation that distracts or confuses users.

Skill for Claude CodeCodex

Written for Claude Code and Codex: shipped in a Claude Code plugin, but also agents/openai.yaml present.

Part of the frontend plugin — 35 skills shipped together

not rated 5repo yesterday A scan 38 tokens copy · 100% MIT

Good fit Use it when implementing feedback after actions, page or component transitions, skeleton screens, focus and hover states, dialogs, notifications, gestures, or scrolling effects.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/fellipeutaka/leon/interaction-design
View source ↗ fellipeutaka/leon
Install

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.

Any agent
npx skills add fellipeutaka/leon --skill interaction-design
Clone the repo
git clone --depth 1 https://github.com/fellipeutaka/leon

Made for: Claude Code, Codex.

Or install frontend, the plugin that ships this one along with the rest of its 35 skills.

Wrote 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.

agentmods badge for interaction-design

README.md
[![agentmods](https://agentmods.dev/badge/skills/fellipeutaka/leon/interaction-design/github.svg)](https://agentmods.dev/skills/fellipeutaka/leon/interaction-design)
Your own site
<a href="https://agentmods.dev/skills/fellipeutaka/leon/interaction-design"><img src="https://agentmods.dev/badge/skills/fellipeutaka/leon/interaction-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.

agentmods 80×15 button for interaction-design

Your own site · 80×15
<a href="https://agentmods.dev/skills/fellipeutaka/leon/interaction-design"><img src="https://agentmods.dev/badge/skills/fellipeutaka/leon/interaction-design.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 38 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,008 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 100% copy Near-identical to another mod in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00038 $0.02008
Opus 5.5 $0.00015 $0.00803
Sonnet 5.5 $0.00008 $0.00402
Haiku 4.5 $0.00004 $0.00201

Measured 2mo ago against content hash 87f2765ed1de, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

interaction-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 2mo 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.

Origin

This is a copy

100% identical to interaction-design — 0 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.

skills/interaction-design/SKILL.md · 321 lines

How it starts

The opening of the file, as written. The whole thing — 321 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Interaction Design

Create engaging, intuitive interactions through motion, feedback, and thoughtful state transitions that enhance usability and delight users.

When to Use This Skill

  • Adding microinteractions to enhance user feedback
  • Implementing smooth page and component transitions
  • Designing loading states and skeleton screens
  • Creating gesture-based interactions
  • Building notification and toast systems
  • Implementing drag-and-drop interfaces
  • Adding scroll-triggered animations
  • Designing hover and focus states

Core Principles

1. Purposeful Motion

Motion should communicate, not decorate:

  • Feedback: Confirm user actions occurred
  • Orientation: Show where elements come from/go to
  • Focus: Direct attention to important changes
  • Continuity: Maintain context during transitions

2. Timing Guidelines

Duration Use Case
100-150ms Micro-feedback (hovers, clicks)
200-300ms Small transitions (toggles, dropdowns)
300-500ms Medium transitions (modals, page changes)
500ms+ Complex choreographed animations

3. Easing Functions

/* Common easings */
--ease-out: cubic-bezier(0.16, 1, 0.3, 1); /* Decelerate - entering */
--ease-in: cubic-bezier(0.55, 0, 1, 0.45); /* Accelerate - exiting */
--ease-in-out: cubic-bezier(0.65, 0, 0.35, 1); /* Both - moving between */
--spring: cubic-bezier(0.34, 1.56, 0.64, 1); /* Overshoot - playful */

Quick Start: Button Microinteraction

import { motion } from "framer-motion";

export function InteractiveButton({ children, onClick }) {
  return (
    <motion.button
      onClick={onClick}
      whileHover={{ scale: 1.02 }}
      whileTap={{ scale: 0.98 }}
      transition={{ type: "spring", stiffness: 400, damping: 17 }}
      className="px-4 py-2 bg-blue-600 text-white rounded-lg"
    >
      {children}
    </motion.button>
  );
}

Read the full file on GitHub · 321 lines

Files

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.

Changes

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.

  1. 2mo ago First seen · 321 lines · 38 tokens per session scan A 87f2765ed1de

Subscribe to this mod's changes

interaction-design is a skill published in the GitHub repository fellipeutaka/leon (5 stars, last pushed yesterday), licensed MIT. It adds 38 tokens to every session and 2,008 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to interaction-design, differing in 0 lines, and is treated as a copy.

Design and UXFrontend
Related

interaction-design compared with skills from other repositories

interaction-design next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
interaction-designfellipeutaka/leonSkill5yesterdayMITA38Claude Code, Codex
webgl-holographic-foilnexu-io/open-designSkill106kyesterdayApache-2.0A41Claude Code, Codex
html-ppt-hermes-cyber-terminalnexu-io/open-designSkill106kyesterdayApache-2.0A53Claude Code, Codex
html-ppt-taste-brutalistnexu-io/open-designSkill106kyesterdayApache-2.0A78Claude Code, Codex
visual-ralphYeachan-Heo/oh-my-codexSkill34k3d agoMITA52Codex
glance-canonical-layoutsandroid/skillsSkill10kyesterdayApache-2.0A56Claude Code
accessibilitymicrosoft/hve-coreSkill1.6kyesterdayMITA47Claude Code