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 dylantarre/animation-principles --skill modals-dialogsgit clone --depth 1 https://github.com/dylantarre/animation-principlesWrote 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/dylantarre/animation-principles/modals-dialogs)<a href="https://agentmods.dev/skills/dylantarre/animation-principles/modals-dialogs"><img src="https://agentmods.dev/badge/skills/dylantarre/animation-principles/modals-dialogs/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/dylantarre/animation-principles/modals-dialogs"><img src="https://agentmods.dev/badge/skills/dylantarre/animation-principles/modals-dialogs.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk 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 | $0.00026 | $0.00694 |
| Opus 5 | $0.00013 | $0.00347 |
| Sonnet 5 | $0.00005 | $0.00139 |
| Haiku 4.5 | $0.00003 | $0.00069 |
Grade A, and why
modals-dialogs 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 — 81 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Modal & Dialog Animation Principles
Apply Disney's 12 principles to modals for seamless, non-jarring transitions.
Principles Applied to Modals
1. Squash & Stretch
Modal can scale from 0.9 to 1.0 on enter, creating a subtle expansion feel. Exit reverses. Keep it subtle to maintain professionalism.
2. Anticipation
Trigger element (button) should react before modal appears. Brief scale-down of trigger, then modal emerges from that point.
3. Staging
Backdrop dims (0.5-0.7 opacity) to focus attention on modal. Background content can blur slightly (4-8px). Modal is the star.
4. Straight Ahead & Pose to Pose
Define states: hidden, entering, visible, exiting. Clear keyframes for each. Pose-to-pose ensures predictable, controllable animation.
5. Follow Through & Overlapping Action
Modal container arrives first, content fades in 50-100ms after. Close button can have slight bounce at end. Stagger form fields.
6. Ease In & Ease Out
Enter: ease-out (decelerates in). Exit: ease-in (accelerates out). cubic-bezier(0.16, 1, 0.3, 1) for smooth, bouncy enter.
7. Arcs
If modal originates from a button, arc toward center rather than straight line. Creates more organic movement path.
8. Secondary Action
While modal scales in (primary), backdrop fades (secondary), content staggers (tertiary). Each supports without competing.
9. Timing
- Backdrop fade: 200-250ms
- Modal enter: 250-350ms
- Modal exit: 200ms (faster out)
- Content stagger: 30-50ms per item
- Shake on error: 300ms
10. Exaggeration
Dramatic entrance for important alerts. Slight overshoot scale (1.02) before settling at 1.0. Error modals can shake briefly.
11. Solid Drawing
Modal shadows should match interface light source. Maintain consistent border-radius. Content should never overflow during animation.
12. Appeal
Smooth entrances feel polished. Origin-point animation feels connected. Abrupt modals feel jarring. Invest in modal transitions.
CSS Implementation
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 · 81 lines · 26 tokens per session scan A 6902d4b499be
modals-dialogs is a skill published in the GitHub repository dylantarre/animation-principles (80 stars, last pushed 8mo ago), licensed MIT. It adds 26 tokens to every session and 694 once invoked, about $0.0001 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 2026-09-03.
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