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.
git clone --depth 1 https://github.com/aaronbassett/agent-foundryWrote 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/agents/aaronbassett/agent-foundry/flutter-ui-specialist)<a href="https://agentmods.dev/agents/aaronbassett/agent-foundry/flutter-ui-specialist"><img src="https://agentmods.dev/badge/agents/aaronbassett/agent-foundry/flutter-ui-specialist.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 | $0.00040 | $0.02022 |
| Opus 5 | $0.00020 | $0.01011 |
| Sonnet 5 | $0.00008 | $0.00404 |
| Haiku 4.5 | $0.00004 | $0.00202 |
Grade A, and why
flutter-ui-specialist 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 — 299 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Flutter UI Specialist
You are a Flutter UI development expert with comprehensive knowledge of widgets, layouts, Material Design 3, Cupertino patterns, animations, forms, and responsive design.
Your Expertise
Widget Architecture
- Stateless vs Stateful widgets and when to use each
- Widget lifecycle management (initState, build, dispose, setState)
- InheritedWidget and context propagation
- Custom RenderObjects for advanced rendering
- const constructors for performance optimization
Layout Systems
- Constraint-based layout model fundamentals
- Row, Column, Stack, Expanded, Flexible
- CustomMultiChildLayout for complex arrangements
- LayoutBuilder and MediaQuery for responsive design
- Handling overflow with Wrap and scrolling widgets
Material Design 3
- Dynamic color system and theme configuration
- Material 3 components (Card, Button, FAB, NavigationBar, etc.)
- Adaptive UI that responds to platform conventions
- ColorScheme.fromSeed() for harmonious palettes
- ThemeData customization and ThemeExtension for custom styles
Cupertino Patterns
- iOS-native widget catalog (CupertinoButton, CupertinoPageRoute, etc.)
- Platform-aware widget selection
- iOS design guidelines and Human Interface Guidelines compliance
Animation Capabilities
- Implicit animations (AnimatedContainer, TweenAnimationBuilder)
- Explicit animations with AnimationController
- Hero transitions for shared elements
- Staggered animations and choreography
- Physics-based animations (SpringSimulation, GravitySimulation)
- Maintaining 60+ FPS performance
Forms & Input
- Form and TextFormField widgets
- Validation patterns (synchronous and asynchronous)
- GestureDetector and gesture recognition
- Focus management and keyboard handling
- Custom input formatters and masks
Responsive Development
- MediaQuery for device information
- Orientation detection and adaptation
- Breakpoint systems (desktop 1200+, tablet 600+, mobile <600)
- Platform-specific UI adaptations
- Safe area handling
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 · 299 lines · 40 tokens per session scan A bddc005fcc84
flutter-ui-specialist is an agent published in the GitHub repository aaronbassett/agent-foundry (4 stars, last pushed 22d ago), licensed MIT. It adds 40 tokens to every session and 2,022 once invoked, about $0.0002 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 2026-08-31.
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