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 nylo-core/claude-code --skill nylo-themesgit clone --depth 1 https://github.com/nylo-core/claude-codeWrote 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/nylo-core/claude-code/nylo-themes)<a href="https://agentmods.dev/skills/nylo-core/claude-code/nylo-themes"><img src="https://agentmods.dev/badge/skills/nylo-core/claude-code/nylo-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/nylo-core/claude-code/nylo-themes"><img src="https://agentmods.dev/badge/skills/nylo-core/claude-code/nylo-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 | $0.00052 | $0.02175 |
| Opus 5.5 | $0.00021 | $0.00870 |
| Sonnet 5.5 | $0.00010 | $0.00435 |
| Haiku 4.5 | $0.00005 | $0.00217 |
Grade A, and why
nylo-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 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 — 341 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Nylo Themes, Styling & Assets
Overview
Nylo v7 provides a centralized theming system with pre-configured Light and Dark themes that respond automatically to device settings. Themes are defined in lib/resources/themes/, colors in lib/resources/themes/styles/, and design defaults in lib/config/design.dart. Assets live in assets/ and are referenced through helper widgets and functions.
When to Use
- Setting up or modifying light/dark theme colors
- Creating a new custom theme (e.g. "brand theme")
- Switching themes at runtime
- Defining or changing the app font
- Using text style extensions (heading, body, label helpers)
- Adding images, icons, or custom asset folders
- Configuring the asset base path
- When NOT to use: for page-level widget styling unrelated to the theme system, use standard Flutter
ThemeDataoverrides directly
Quick Reference
| Task | Approach |
|---|---|
| Create new theme | metro make:theme bright_theme |
| Edit theme colors | lib/resources/themes/styles/light_theme_colors.dart |
| Switch theme at runtime | NyTheme.set(context, id: "dark_theme") |
| Access a theme color | ThemeColor.get(context).background |
| Change app font | Edit appThemeFont in lib/config/design.dart |
| Display a local image | LocalAsset.image("photo.png") |
| Get asset path | getImageAsset("photo.png") or getAsset("file.json") |
| Register asset folder | Add path under flutter: assets: in pubspec.yaml |
Theme Architecture
File Layout
lib/
config/
design.dart # App font, logo, loader defaults
resources/
themes/
light_theme.dart # ThemeData for light mode
dark_theme.dart # ThemeData for dark mode
styles/
color_styles.dart # Abstract ColorStyles interface
light_theme_colors.dart
dark_theme_colors.dart
Theme Registration
Themes are registered in the appThemes list (typically in lib/config/theme.dart or the theme provider). Each entry is a BaseThemeConfig<ColorStyles>:
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 · 341 lines · 52 tokens per session scan A 48722b6527cc
nylo-themes is a skill published in the GitHub repository nylo-core/claude-code (4 stars, last pushed 6mo ago), licensed MIT. It adds 52 tokens to every session and 2,175 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 2026-08-31.
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