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/dylantarre/animation-principles/universal-referencenpx skills add dylantarre/animation-principles --skill universal-referencegit 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/universal-reference)<a href="https://agentmods.dev/skills/dylantarre/animation-principles/universal-reference"><img src="https://agentmods.dev/badge/skills/dylantarre/animation-principles/universal-reference.svg" alt="Measured on agentmods" 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 | $0.00030 | $0.00846 |
| Opus 5 | $0.00015 | $0.00423 |
| Sonnet 5 | $0.00006 | $0.00169 |
| Haiku 4.5 | $0.00003 | $0.00085 |
Grade A, and why
Animation Principles - Universal Reference 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 5d 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 — 96 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Animation Principles - Universal Reference
Disney's 12 principles work at every skill level. Here's each principle with scalable depth.
1. Squash and Stretch
Core idea: Objects deform to show motion and impact. Beginner: Ball flattens when it hits ground. Advanced: Volume must remain constant. Facial animation uses micro-squash for expression. Key insight: Even "rigid" objects can use the principle through camera shake or motion blur.
2. Anticipation
Core idea: Prepare the viewer for action. Beginner: Crouch before jump. Advanced: Anticipation size controls audience expectation. Absence creates surprise. Key insight: Every action that needs to read clearly needs setup.
3. Staging
Core idea: Present one clear idea at a time. Beginner: Put important things where viewers will look. Advanced: Silhouette test, negative space, compositional psychology. Key insight: Confusion is never the viewer's fault.
4. Straight Ahead and Pose to Pose
Core idea: Two methods - sequential vs. key-pose-first. Beginner: Different ways to approach the same animation. Advanced: Choose based on need: control vs. spontaneity. Hybrid approaches for complex shots. Key insight: The method shapes the result's energy.
5. Follow Through and Overlapping Action
Core idea: Different parts stop at different times. Beginner: Hair keeps moving after head stops. Advanced: Drag, settle, overlap hierarchy. Emotional implications of follow through weight. Key insight: Simultaneous stopping looks robotic.
6. Slow In and Slow Out
Core idea: Things accelerate and decelerate. Beginner: More drawings at start and end, fewer in middle. Advanced: Custom easing curves. Snap, bounce, drift variations. Key insight: Even spacing reads mechanical.
7. Arc
Core idea: Natural motion follows curves. Beginner: Arms swing in arcs, not straight lines. Advanced: Track all motion paths. Breaking arcs intentionally for mechanical/sudden effects. Key insight: Straight paths require justification.
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.
- 5d ago First seen · 96 lines · 30 tokens per session scan A 8e1d0280997f
Animation Principles - Universal Reference is a skill published in the GitHub repository dylantarre/animation-principles (79 stars, last pushed 8mo ago), licensed MIT. It adds 30 tokens to every session and 846 once invoked, about $0.0002 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 2026-08-30.
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