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 TalissonVitorino/kmp-ios-skills --skill m3-expressivegit clone --depth 1 https://github.com/TalissonVitorino/kmp-ios-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/talissonvitorino/kmp-ios-skills/m3-expressive)<a href="https://agentmods.dev/skills/talissonvitorino/kmp-ios-skills/m3-expressive"><img src="https://agentmods.dev/badge/skills/talissonvitorino/kmp-ios-skills/m3-expressive/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/talissonvitorino/kmp-ios-skills/m3-expressive"><img src="https://agentmods.dev/badge/skills/talissonvitorino/kmp-ios-skills/m3-expressive.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00041 | $0.15471 |
| Opus 5.5 | $0.00016 | $0.06188 |
| Sonnet 5.5 | $0.00008 | $0.03094 |
| Haiku 4.5 | $0.00004 | $0.01547 |
Grade A, and why
m3-expressive 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 1mo 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 — 1,929 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Material 3 Expressive for Jetpack Compose
Material 3 Expressive extends Material 3 with spring-based motion, morphable shapes, emphasized type styles, a recoloured baseline palette, and a set of new components. This skill covers the Compose implementation in androidx.compose.material3.
Version gate — verified against material3 1.4.0 and 1.5.0-alpha26 (Aug 2026).
- 1.4.0 (stable, Compose BOM
2026.08.00) exposes almost none of this.MaterialExpressiveTheme,expressiveLightColorScheme(),MotionScheme/MotionScheme.expressive()/MaterialTheme.motionScheme, every*Emphasizedtype style,Shapes.largeIncreased/extraLargeIncreased/extraExtraLarge,MediumFlexibleTopAppBar/LargeFlexibleTopAppBar/TwoRowsTopAppBar/FlexibleBottomAppBarandVerticalSliderare all declaredinternalin 1.4.0. OnlyWideNavigationRailandShortNavigationBarare public there.- Everything else in this skill needs
1.5.0-alpha*— toggle buttons,ButtonGroup,SplitButtonLayout, the FAB menu and sized FABs, floating toolbars, wavy progress indicators, loading indicators, menu groups, the expanded search bars,MaterialShapes. In practice: use the alpha BOM or none of this resolves.- Opt-in:
ExperimentalMaterial3ExpressiveApiis itselfinternalin 1.4.0, so the@OptIncannot even be written there. From 1.5.0-alpha23 most expressive APIs graduated to stable; on 1.5.0-alpha26 onlyLoadingIndicator/ContainedLoadingIndicatorandMaterialShapes/Morph.toPath/RoundedPolygon.toShapestill require it.AppBarWithSearchand the deprecatedTopSearchBarneed@OptIn(ExperimentalMaterial3Api::class)instead — a different annotation. A redundant opt-in is harmless (an "unnecessary @OptIn" warning).Examples below are written for 1.5.0-alpha26 and keep the opt-in annotation. For general Compose state/recomposition work prefer
android-skills:compose; for non-expressive theming seecompose-theming-styles.
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.
- 1mo ago First seen · 1,929 lines · 41 tokens per session scan A 1818ed1cd44f
m3-expressive is a skill published in the GitHub repository TalissonVitorino/kmp-ios-skills (15 stars, last pushed 2mo ago), licensed MIT. It adds 41 tokens to every session and 15,471 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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