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 mastergit 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/master)<a href="https://agentmods.dev/skills/dylantarre/animation-principles/master"><img src="https://agentmods.dev/badge/skills/dylantarre/animation-principles/master.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 5.1 | $0.00032 | $0.00588 |
| Opus 5 | $0.00016 | $0.00294 |
| Sonnet 5 | $0.00006 | $0.00118 |
| Haiku 4.5 | $0.00003 | $0.00059 |
Grade A, and why
Animation Principles - Master 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 7d 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 — 53 lines — stays where its author put it; the contents beside it link to each section on GitHub.
The Philosophy Behind the Principles
Masters don't just apply principles - they understand their origins in human perception and storytelling. This is animation as visual psychology.
Why the Principles Work
Squash and Stretch: Persistence of Vision
The eye blurs motion. Stretch simulates motion blur our brains expect. Squash simulates impact compression we've observed since infancy. We're matching internal neural predictions.
Anticipation: Predictive Processing
Human brains constantly predict next moments. Anticipation feeds this system information, making action legible. Without it, perception lags behind action.
Staging: Attentional Bandwidth
Humans have limited focal attention. Staging respects cognitive constraints. It's not artistic preference - it's information architecture for biological processors.
Method Philosophy
Pose-to-pose: Animation as acting - clear intentions, deliberate choices. Straight ahead: Animation as discovery - emergent behavior, organic evolution. Both philosophies are valid worldviews.
Follow Through: Physics as Metaphor
Objects with follow through feel like they exist in a world with rules. Rules create believability. Even cartoon physics must be internally consistent.
Slow In/Out: Natural Motion Universals
Almost nothing in nature moves at constant velocity. Ease reflects universal physics. It's not stylistic - it's the visual signature of mass and energy.
Arcs: Gravitational Truth
Pendulums, projectiles, limbs - rotation and gravity create curves. Arcs are motion's natural signature. Linear paths require explanation.
Secondary Action: Cognitive Depth
Humans assess situations through multiple channels simultaneously. Secondary action mimics this richness. Single-channel communication feels impoverished.
Timing: Emotional Chronometry
We feel time differently based on emotional state. Animation timing recreates these subjective time distortions. Fast isn't always fast - it's how fast feels.
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.
- 7d ago First seen · 53 lines · 32 tokens per session scan A 56b35e2f78a5
Animation Principles - Master is a skill published in the GitHub repository dylantarre/animation-principles (79 stars, last pushed 8mo ago), licensed MIT. It adds 32 tokens to every session and 588 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.
Other skills, from other repositories
edu-math-tutorial
A Chinese-language guide for turning a maths problem into a step-by-step teaching video. It explains how to break down the solution, write narration, format equations, and structure scenes.
adobe
Show an onboarding tour of the Adobe for creativity connector: what capabilities are available, an example workflow for each, and which Adobe product powers it. Trigger when the user invokes /adobe by name, or asks what they can do with Adobe, what Adobe skills or tools exist, or wants a tour or overview of Adobe…
explainer-animations
Create educational animated explainers that teach concepts step-by-step using the Excalimate MCP server. Use when asked to explain how something works, create tutorial animations, onboarding walkthroughs, concept breakdowns, or any content that needs to progressively build understanding — even if the user says "show…
explainer
A tool for making narrated explainer or tutorial videos with computer-generated visuals. It can help create the script, the video, or both.
compose-sacred-music
Compose or analyze sacred music in Hildegard von Bingen's distinctive modal style. Covers modal selection, melodic contour (wide-range melodies), text-setting (syllabic and melismatic), neumatic notation, and liturgical context for antiphons, sequences, and responsories. Use when composing a new piece in Hildegardian…
animation-reverse-engineering
Reverse-engineer any motion reference (a video from X/Twitter, Dribbble, a screen recording, a GIF) into production animation code through frame-level dissection. Use when the user shares a video/URL and says "implement this animation", "recreate this motion", "port this interaction", "how does this animate", "clone…