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 linuxdevel/Avalonia-skills --skill motiongit clone --depth 1 https://github.com/linuxdevel/Avalonia-skillsWrote 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/linuxdevel/avalonia-skills/motion)<a href="https://agentmods.dev/skills/linuxdevel/avalonia-skills/motion"><img src="https://agentmods.dev/badge/skills/linuxdevel/avalonia-skills/motion/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/linuxdevel/avalonia-skills/motion"><img src="https://agentmods.dev/badge/skills/linuxdevel/avalonia-skills/motion.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00054 | $0.02813 |
| Opus 5.5 | $0.00022 | $0.01125 |
| Sonnet 5.5 | $0.00011 | $0.00563 |
| Haiku 4.5 | $0.00005 | $0.00281 |
Grade A, and why
avalonia-pro-max/motion 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 9d 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 — 314 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Motion in Avalonia
Two complementary systems:
| System | Purpose | When |
|---|---|---|
Transitions |
Animate property changes automatically when value changes | Hover/press, layout, color, size |
Animation (Style.Animations) |
Time-based keyframed animation | Skeleton shimmer, indeterminate spinner, attention pulse |
PageTransition (FluentAvalonia / TabControl) |
Whole-view transitions | Frame navigation, tab swap |
Target durations:
| Type | Duration | Easing |
|---|---|---|
| Micro (hover, press) | 100–150 ms | LinearEasing or QuadraticEaseOut |
| Standard (panel slide, fade) | 200–300 ms | CubicEaseOut |
| Large (page transition) | 300–400 ms | ExponentialEaseOut |
| Exit | ~70% of enter | Same family |
Transitions on a Style
<Style Selector="Border.card">
<Setter Property="Background" Value="{DynamicResource SurfaceElevatedBrush}"/>
<Setter Property="Transitions">
<Transitions>
<BrushTransition Property="Background" Duration="0:0:0.2"/>
<DoubleTransition Property="Opacity" Duration="0:0:0.2"/>
<TransformOperationsTransition Property="RenderTransform"
Duration="0:0:0.15"
Easing="CubicEaseOut"/>
<BoxShadowsTransition Property="BoxShadow" Duration="0:0:0.2"/>
</Transitions>
</Setter>
<Setter Property="RenderTransform" Value="none"/>
</Style>
<Style Selector="Border.card:pointerover">
<Setter Property="BoxShadow" Value="{StaticResource ShadowMd}"/>
<Setter Property="RenderTransform" Value="translateY(-2px)"/>
</Style>
Available *Transition types: DoubleTransition, BrushTransition, ColorTransition, ThicknessTransition, CornerRadiusTransition, TransformOperationsTransition, BoxShadowsTransition, IntegerTransition, SizeTransition, PointTransition, VectorTransition.
Rule: Animate only Opacity, RenderTransform, Background/Foreground/BorderBrush, and BoxShadow. Avoid Width/Height/Margin — these trigger layout passes and jank.
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.
- 9d ago Changed · +23 lines 04da6a492b9f
- 2mo ago First seen · 291 lines · 54 tokens per session scan A bb17db7aebcd
avalonia-pro-max/motion is a skill published in the GitHub repository linuxdevel/Avalonia-skills (48 stars, last pushed 10d ago), licensed MIT. It adds 54 tokens to every session and 2,813 once invoked, about $0.0002 per session on Opus 5.5. 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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