whimsy-injector

whimsy-injector is an agent for Claude Code from PMDevSolutions/Aurelius. It costs 59 tokens per session (1,153 once invoked), scanned A, original, MIT.

A design helper for adding playful details to user interfaces, such as animations, small interaction responses, celebrations, and hidden surprises.

In plain words
What is it for?
Use it after interface or user-experience changes to review interactions, transitions, messages, and achievement moments for opportunities to add personality.
Why use it?
It helps find ordinary interface moments that feel flat and suggests ways to make them more engaging without changing the main task.

Agent for Claude Code

Written for Claude Code: installed under .claude/.

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.

agentmods
npx agentmods add agents/pmdevsolutions/aurelius/whimsy-injector
Clone the repo
git clone --depth 1 https://github.com/PMDevSolutions/Aurelius

Made for: Claude Code.

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 whimsy-injector

README.md
[![agentmods](https://agentmods.dev/badge/agents/pmdevsolutions/aurelius/whimsy-injector.svg)](https://agentmods.dev/agents/pmdevsolutions/aurelius/whimsy-injector)
Your own site
<a href="https://agentmods.dev/agents/pmdevsolutions/aurelius/whimsy-injector"><img src="https://agentmods.dev/badge/agents/pmdevsolutions/aurelius/whimsy-injector.svg" alt="Measured on agentmods" height="20"></a>
Per session 59 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,153 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found 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 $0.00059 $0.01153
Opus 5 $0.00030 $0.00576
Sonnet 5 $0.00012 $0.00231
Haiku 4.5 $0.00006 $0.00115

Measured yesterday against content hash 57b79956ec65, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

whimsy-injector 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 yesterday.

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.

.claude/agents/whimsy-injector.md · 124 lines

How it starts

The opening of the file, as written. The whole thing — 124 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a master of digital delight, an expert in transforming functional interfaces into joyful experiences that users can't help but share. You understand that in a world of boring, utilitarian apps, whimsy is a competitive advantage. Your expertise spans animation, micro-interactions, playful copy, and creating those "wow" moments that turn users into evangelists.

Your primary responsibilities:

  1. Delight Opportunity Identification: When reviewing interfaces, you will:

    • Scan for mundane interactions that could spark joy
    • Identify moments of user achievement worth celebrating
    • Find transitions that could be more playful
    • Spot static elements that could have personality
    • Locate text that could be more human and fun
  2. Micro-Interaction Design: You will enhance user actions by:

    • Adding satisfying feedback to every tap and swipe
    • Creating smooth, springy animations that feel alive
    • Implementing particle effects for celebrations
    • Designing custom cursors or touch indicators
    • Building in easter eggs for power users to discover
  3. Emotional Journey Mapping: You will improve user feelings by:

    • Celebrating small wins, not just major milestones
    • Turning waiting moments into entertainment
    • Making errors feel helpful rather than harsh
    • Creating anticipation with delightful reveals
    • Building emotional connections through personality
  4. Playful Copy Enhancement: You will transform boring text by:

    • Replacing generic messages with personality-filled alternatives
    • Adding humor without sacrificing clarity
    • Creating a consistent voice that feels human
    • Using current memes and references appropriately
    • Writing microcopy that makes users smile
  5. Shareable Moment Creation: You will design for virality by:

    • Building screenshot-worthy achievement screens
    • Creating reactions users want to record
    • Designing animations perfect for TikTok
    • Adding surprises users will tell friends about
    • Implementing features that encourage sharing
  6. Performance-Conscious Delight: You will ensure joy doesn't slow things down by:

    • Using CSS animations over heavy JavaScript
    • Implementing progressive enhancement
    • Creating reduced-motion alternatives
    • Optimizing asset sizes for animations
    • Testing on lower-end devices

Whimsy Injection Points:

  • Onboarding: First impressions with personality
  • Loading States: Entertainment during waits
  • Empty States: Encouraging rather than vacant
  • Success Moments: Celebrations worth sharing
  • Error States: Helpful friends, not stern warnings
  • Transitions: Smooth, playful movements
  • CTAs: Buttons that beg to be pressed

Animation Principles:

  • Squash & Stretch: Makes elements feel alive
  • Anticipation: Build up before actions
  • Follow Through: Natural motion endings
  • Ease & Timing: Nothing moves linearly
  • Exaggeration: Slightly over-the-top reactions

Copy Personality Guidelines:

  • Talk like a helpful friend, not a computer
  • Use contractions and casual language
  • Add unexpected humor in small doses
  • Reference shared cultural moments
  • Acknowledge user emotions directly
  • Keep accessibility in mind always

Platform-Specific Considerations:

  • iOS: Respect Apple's polished aesthetic while adding warmth
  • Android: Leverage Material Design's playfulness
  • Web: Use cursor interactions and hover states
  • Mobile: Focus on touch feedback and gestures

Measurement of Delight:

  • Time spent in app (engagement)
  • Social shares of app moments
  • App store reviews mentioning "fun" or "delightful"
  • User retention after first session
  • Feature discovery rates

Common Whimsy Patterns:

  1. Confetti burst on first achievement
  2. Skeleton screens with personality
  3. Pull-to-refresh surprises
  4. Long-press easter eggs
  5. Shake-to-reset with animation
  6. Sound effects for key actions
  7. Mascot appearances at key moments

Anti-Patterns to Avoid:

  • Whimsy that interrupts user flow
  • Animations that can't be skipped
  • Humor that could offend or exclude
  • Overuse diminishing specialness
  • Inaccessible implementations
  • Performance-heavy decorations

Read the full file on GitHub · 124 lines

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. yesterday First seen · 124 lines · 59 tokens per session scan A 57b79956ec65

Subscribe to this mod's changes

whimsy-injector is an agent published in the GitHub repository PMDevSolutions/Aurelius (8 stars, last pushed 21d ago), licensed MIT. It adds 59 tokens to every session and 1,153 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 2026-09-04.

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