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 themesgit 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/themes)<a href="https://agentmods.dev/skills/linuxdevel/avalonia-skills/themes"><img src="https://agentmods.dev/badge/skills/linuxdevel/avalonia-skills/themes.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 | $0.00071 | $0.02197 |
| Opus 5 | $0.00036 | $0.01099 |
| Sonnet 5 | $0.00014 | $0.00439 |
| Haiku 4.5 | $0.00007 | $0.00220 |
Grade A, and why
avalonia-pro-max/themes 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 — 270 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Avalonia Theme Libraries
TL;DR Defaults
| You want | Use |
|---|---|
| Modern Microsoft / Windows-native feel | FluentTheme + FluentAvalonia |
| Modern, opinionated flat (Linear-like) | SukiUI |
| Clean Chinese-design-system look | Semi.Avalonia |
| Material Design 3 | Material.Avalonia |
| shadcn/ui-inspired developer aesthetic | ShadUI |
| Rich enterprise control set | Ursa.Avalonia |
| Just a slight upgrade over built-ins | Citrus.Avalonia |
| Retro Windows 9x | Classic.Avalonia |
| Fallout Pip-Boy / themed novelty | Pipboy.Avalonia |
| Pure custom (no library) | FluentTheme only + your own ControlThemes |
Recommendation Matrix by Product Type
| Product | Best fit | Why |
|---|---|---|
| Internal tools / admin / dashboards | FluentAvalonia + FluentTheme | NavigationView, InfoBar, TeachingTip ready; matches Windows desktop expectation |
| Cross-platform consumer app | SukiUI or Semi.Avalonia | Look identical on Win/macOS/Linux, modern flat |
| Mobile-first cross-platform | Semi.Avalonia + custom tokens | Lightweight, works well at small sizes |
| Developer tool (IDE, terminal, db client) | SukiUI or ShadUI | Dark-first, low-chrome, accent-driven |
| Material-spec product | Material.Avalonia | True MD3 compliance |
| Enterprise B2B with many forms / data | Ursa.Avalonia | Pre-built form, tag, badge, drawer, time picker, etc. |
| Game launcher / creative app | SukiUI + custom palette | High-contrast, flexible |
| Migration from WPF (minimum visual change) | FluentTheme only | Closest to legacy Windows look without Material weirdness |
FluentTheme (built-in baseline)
Always start here unless you have a strong reason. Ships with Avalonia, no extra NuGet.
<Application.Styles>
<FluentTheme/>
</Application.Styles>
Pair with RequestedThemeVariant="Default" to follow OS.
Customize the FluentTheme accent via well-known resource keys:
<Application.Resources>
<ResourceDictionary>
<ResourceDictionary.ThemeDictionaries>
<ResourceDictionary x:Key="Light">
<SolidColorBrush x:Key="SystemAccentColor" Color="#2563EB"/>
<SolidColorBrush x:Key="SystemAccentColorDark1" Color="#1D4ED8"/>
<SolidColorBrush x:Key="SystemAccentColorLight1" Color="#3B82F6"/>
</ResourceDictionary>
<ResourceDictionary x:Key="Dark">
<SolidColorBrush x:Key="SystemAccentColor" Color="#3B82F6"/>
</ResourceDictionary>
</ResourceDictionary.ThemeDictionaries>
</ResourceDictionary>
</Application.Resources>
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 · 270 lines · 71 tokens per session scan A cad11b1a4d27
avalonia-pro-max/themes is a skill published in the GitHub repository linuxdevel/Avalonia-skills (36 stars, last pushed 4mo ago), licensed MIT. It adds 71 tokens to every session and 2,197 once invoked, about $0.0004 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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