What is building-flutter-production-apps?

A production-app guide for Flutter architecture, user-interface design, platform integration, state management, and performance work. It covers ways to organize code and keep larger apps maintainable.

Use it when planning Flutter app structure, building responsive interfaces, adding animations or native integrations, reviewing code, or profiling performance.

It helps developers make architectural choices and address slow screens, unnecessary redraws, accessibility, localization, and device-specific behavior.

building-flutter-production-apps — Skill for Claude Code and Codex by

Install

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.

Any agent

npx skills add Poorgramer-Zack/dart-expert-skills --skill flutter-expert

Clone the repo

git clone --depth 1 https://github.com/Poorgramer-Zack/dart-expert-skills

Made for: Claude Code, Codex.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/poorgramer-zack/dart-expert-skills/flutter-expert/github.svg)](https://agentmods.dev/skills/poorgramer-zack/dart-expert-skills/flutter-expert)

Your own site

<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.

Your own site · 80×15

<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>

Per session 177 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 953 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

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	$0.00088	$0.00477
Sonnet 5	$0.00035	$0.00191
Haiku 4.5	$0.00018	$0.00095

Measured 11d ago against content hash a7497472d08c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

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 11d 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.

skills/flutter-expert/SKILL.md · 96 lines

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

Read the full file on GitHub · 96 lines

Files

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.

Changes

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.

11d ago First seen · 96 lines · 177 tokens per session scan A a7497472d08c

Subscribe to this mod's changes

building-flutter-production-apps is a skill published in the GitHub repository Poorgramer-Zack/dart-expert-skills (7 stars, last pushed 1mo ago), licensed MIT. It adds 177 tokens to every session and 953 once invoked, about $0.0009 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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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, or asks about AtCollection , CItem , Query , sub-collections…

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building-flutter-production-apps