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 majiayu000/claude-skill-registry --skill agent-flutter-expertgit clone --depth 1 https://github.com/majiayu000/claude-skill-registryWrote 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/majiayu000/claude-skill-registry/agent-flutter-expert)<a href="https://agentmods.dev/skills/majiayu000/claude-skill-registry/agent-flutter-expert"><img src="https://agentmods.dev/badge/skills/majiayu000/claude-skill-registry/agent-flutter-expert/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/majiayu000/claude-skill-registry/agent-flutter-expert"><img src="https://agentmods.dev/badge/skills/majiayu000/claude-skill-registry/agent-flutter-expert.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 | $0.00045 | $0.00236 |
| Opus 5 | $0.00023 | $0.00118 |
| Sonnet 5 | $0.00009 | $0.00047 |
| Haiku 4.5 | $0.00005 | $0.00024 |
Grade A, and why
agent-flutter-expert 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.
What it actually says
Flutter Expert Agent
You are a senior Flutter expert with expertise in Flutter 3+ and cross-platform mobile development. Your focus spans architecture patterns, state management, platform-specific implementations, and performance optimization with emphasis on creating applications that feel truly native on every platform.
Domain
Language Expertise
Tools
Primary: flutter, dart, android-studio, xcode, firebase, fastlane
Key Capabilities
- Flutter 3+ features utilized effectively
- Null safety enforced properly maintained
- Widget tests > 80% coverage achieved
- Performance 60 FPS consistently delivered
- Bundle size optimized thoroughly completed
- Platform parity maintained properly
Activation
This agent activates for tasks involving:
- flutter expertise related work
- Domain-specific implementation and optimization
- Technical guidance and best practices
Integration
Works with other agents for:
- Cross-functional collaboration
- Domain expertise sharing
- Quality validation
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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 · 40 lines · 45 tokens per session scan A 6ccbb043dddf
agent-flutter-expert is a skill published in the GitHub repository majiayu000/claude-skill-registry (600 stars, last pushed yesterday), licensed MIT. It adds 45 tokens to every session and 236 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 2026-09-03.
Other skills, from other repositories
neo-swift-ui
Use this skill when building, debugging, refactoring, or reviewing SwiftUI apps or views for iOS 16+ and related Apple platforms. Trigger for NavigationStack, Observation/state flow, view composition, previews, performance, accessibility, and SwiftUI architecture.
neo-swift
Use this skill when writing, reviewing, debugging, or modernizing Swift code for iOS, macOS, server-side Swift, or shared packages. Trigger for Swift 5+ language features, structured concurrency, memory safety, protocols/generics, SwiftUI integration, and performance-sensitive code.
wear-compose-m3
Expert guidance for working with Wear OS Compose Material3. Use this skill when creating, updating, or migrating Wear OS projects. This includes the androidx.wear.compose.material3, androidx.wear.compose.foundation, and androidx.wear.compose.navigation3 libraries. Also working with core components such as AppScaffold…
kotlin-tooling-agp9-migration
Migrates Kotlin Multiplatform (KMP) projects to Android Gradle Plugin 9.0+. Handles plugin replacement (com.android.kotlin.multiplatform.library), module splitting, DSL migration, and the new default project structure. Use when upgrading AGP, when build fails due to KMP+AGP incompatibility, or when the user mentions…
android-kotlin-patterns
Jetpack Compose, MVVM, Room, Coroutines, DI with Dagger/Hilt, and Play Store submission.
ios-swift-patterns
SwiftUI, UIKit, MVVM, Combine, async/await, Core Data, and App Store submission patterns.