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 Poorgramer-Zack/dart-expert-skills --skill flutter-expertgit clone --depth 1 https://github.com/Poorgramer-Zack/dart-expert-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/poorgramer-zack/dart-expert-skills/flutter-expert)<a href="https://agentmods.dev/skills/poorgramer-zack/dart-expert-skills/flutter-expert"><img src="https://agentmods.dev/badge/skills/poorgramer-zack/dart-expert-skills/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/poorgramer-zack/dart-expert-skills/flutter-expert"><img src="https://agentmods.dev/badge/skills/poorgramer-zack/dart-expert-skills/flutter-expert.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 | $0.00177 | $0.00953 |
| Opus 5.5 | $0.00071 | $0.00381 |
| Sonnet 5.5 | $0.00035 | $0.00191 |
| Haiku 4.5 | $0.00018 | $0.00095 |
Grade A, and why
building-flutter-production-apps 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 — 96 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Flutter Expert Guide
Overview
Expert reference for Flutter architecture, UI implementation, native platform integration, and performance optimization across the full application lifecycle.
Process
🚀 High-Level Workflow
Architecting a scalable Flutter application involves the following development phases:
Phase 1: Environment & Architecture Foundations
1.1 Core Architectural Design
Choose between feature-first and layer-first directory structures. Architect Domain, Data, and Presentation layers.
- References:
architecture.md,architecture-decision-matrix.md
Phase 2: Application Navigation & Interactive UI Delivery
2.1 Phenomenal UI Implementation & Theming
Build responsive adaptive UI with accessibility (a11y) and internationalization (i18n) standards.
- References:
layout.md,theming.md,accessibility.md,localization.md
2.2 System UI Control & Immersion
Fine-tune status bar and navigation bar aesthetics. Control full-screen immersive modes while effectively resolving manufacturer-specific layout bugs.
- Reference:
system-ui.md
2.3 Animations & Micro-Interactions
Implement implicit/explicit animations and micro-interactions to improve perceived performance and UX.
- Reference:
animation.md
Phase 3: Data Integration & Systemic Performance
3.1 Advanced Data Architectures
Implement HTTP clients, JSON parsing strategies, and response caching.
- References:
http-and-json.md,caching.md
3.2 Performance & Concurrency Scaling
Move heavy computation to background isolates to prevent UI jank. Optimize compiled app size via tree shaking, deferred loading, and asset compression.
- References:
performance.md,concurrency.md,app-size.md
3.3 Deep Native Platform Integrations
Communicate with native OS APIs via MethodChannel, EventChannel, or dart:ffi.
- References:
native-interop.md,platform-views.md,plugins.md,home-screen-widget.md
What ships with it
17 files 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.
- references/accessibility.md 6.7 KB
- references/animation.md 9.9 KB
- references/app-size.md 5.1 KB
- references/architecture-decision-matrix.md 16 KB
- references/architecture.md 7.0 KB
- references/caching.md 8.4 KB
- references/concurrency.md 7.7 KB
- references/home-screen-widget.md 8.8 KB
- references/http-and-json.md 7.9 KB
- references/layout.md 5.2 KB
- references/localization.md 6.0 KB
- references/native-interop.md 9.0 KB
- references/performance.md 7.3 KB
- references/platform-views.md 13 KB
- references/plugins.md 6.5 KB
- references/system-ui.md 3.3 KB
- references/theming.md 6.2 KB
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 · 96 lines · 177 tokens per session scan A a7497472d08c
building-flutter-production-apps is a skill published in the GitHub repository Poorgramer-Zack/dart-expert-skills (7 stars, last pushed 2mo ago), licensed MIT. It adds 177 tokens to every session and 953 once invoked, about $0.0007 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.
Other skills, from other repositories
at_client_skills-sdk
Use this skill when a developer is building a Dart or Flutter app that depends on atclient or atclientflutter from pub.dev, stores or shares data via the Atsign Protocol, needs onboarding (CRAM new-atsign, atKeys file, keychain, APKAM) or APKAM enrollment, asks how to open, own, stop or switch an AtClient or read its…
flutter-pre-caching
Use when preloading fonts, asset/network images, Lottie/Rive animations, local JSON/config, warming initial API data, or optimizing Flutter Web startup.
firebase-messaging
Use when setting up Firebase Cloud Messaging, managing permissions and tokens, handling background/foreground notification taps, or dispatching messages server-side (HTTP v1).
bloc
Use when creating a Cubit or Bloc, modeling state with sealed classes or status enums, wiring BlocBuilder/BlocListener/BlocProvider, writing bloc tests, or choosing between Cubit and Bloc.
generate-images-with-firebase-ai
Use when generating or editing images from Flutter/Dart with Firebase AI Logic and a Gemini image model (Nano Banana), making the first call work, choosing Gemini Developer API vs Vertex AI, hitting quota, billing or App Check failures, getting empty or image-only responses, sending a user photo as input, controlling…
firebase-app-check
Use when implementing app attestation, configuring App Check providers, setting up debug tokens, enabling backend enforcement, or managing token refresh.