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/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/themes"><img src="https://agentmods.dev/badge/skills/linuxdevel/avalonia-skills/themes.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 | $0.00071 | $0.03234 |
| Opus 5.5 | $0.00028 | $0.01294 |
| Sonnet 5.5 | $0.00014 | $0.00647 |
| Haiku 4.5 | $0.00007 | $0.00323 |
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 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 — 292 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 |
Avalonia Version Compatibility (verified on nuget.org, 2026-10-22)
Third-party themes version independently of Avalonia. Pick the package line that matches the project's Avalonia version (see avalonia-versions). "Min Avalonia" is the lowest Avalonia the package's nuspec declares (a NuGet minimum, not an exact pin). Do not mix a 11.x-line theme with a 12.x app or the reverse.
| Package (NuGet id) | Avalonia 11.3 | Avalonia 12.0 / 12.1 |
|---|---|---|
FluentAvaloniaUI |
2.5.1 (min Avalonia 11.3.12) | 3.0.0 (min 12.0.0) · 3.1.0 (min 12.1.0) |
SukiUI |
6.1.1 (min 11.3.14) | 7.0.1 (min 12.0.3). Stable 7.x on nuget is 7.0.1; later 7.0.2 builds are nightly only |
Semi.Avalonia |
11.3.22 (min 11.3.22) | 12.0.0 / 12.0.1 / 12.0.3 / 12.1.0 / 12.1.0.1 (12.1.0.1: min 12.1.0) |
Irihi.Ursa |
1.15.1 (min 11.3.7) | 2.0.0 to 2.2.0 published (2.2.0: min 12.0.2; earlier 2.x minimums not checked) |
Irihi.Ursa.Themes.Semi (Ursa + Semi bridge) |
not checked | 2.2.0 (needs Irihi.Ursa 2.2.0, Semi.Avalonia 12.0.1+, Avalonia 12.0.2+) |
Material.Avalonia |
up to 3.14.2 (min Avalonia 11.1.0) | 3.15.0 / 3.15.1 / 3.18.0 / 3.19.0 (min 12.0.0; intermediate versions not checked) · 3.20.0 / 3.21.0 (min 12.1.1) |
ShadUI |
none (0.x line starts at Avalonia 12) | 0.2.0 (min 12.0.2) · 0.2.4 (min 12.1.0, net10.0/net9.0 targets) |
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 · +22 lines 346bd9c72acb
- 2mo 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 (48 stars, last pushed 10d ago), licensed MIT. It adds 71 tokens to every session and 3,234 once invoked, about $0.0003 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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