Programming · Building & coding
flutter
/flutter
Use when writing or reviewing Flutter or Dart code — widget structure, state management, rendering performance on Impeller, or adapting a screen to iOS and Android.
For whom
Assessment and security
85/ 100Class: good
Format25 / 25
Frontmatter with name and description, valid name, description up to 1,024 characters, name matching the folder.
Discoverability25 / 25
Description explains when to use the skill, has a reasonable length and uses third person.
Content20 / 35
At least 150 words and at most 500 lines, headings, step lists, examples or code.
Hygiene15 / 15
No placeholders such as TODO, no Windows paths, with a licence.
Riskno signals detected in the scan
- Files in this package
- 10
- Scripts
- 0
- HTML comments
- 0
- URLs in SKILL.md
- 0
Deprecation
No signals detected. Repository changed on 28.10.2026, without references to retired models or APIs.
Licence
MIT, open: use and modify while retaining author attribution.
What it does and when to use it
Use when writing or reviewing Flutter or Dart code — widget structure, state management, rendering performance on Impeller, or adapting a screen to iOS and Android.
Original author description
Use when writing or reviewing Flutter or Dart code — widget structure, state management, rendering performance on Impeller, or adapting a screen to iOS and Android.
How it works
- Philosophy
- What's Included
- Stack Integrations (detection-gated)
Original SKILL.md headings · 36 lines, 198 words
SKILL.md preview
---
name: "flutter"
description: "Use when writing or reviewing Flutter or Dart code — widget structure, state management, rendering performance on Impeller, or adapting a screen to iOS and Android."
version: "1.0.0"
type: knowledge
layer: framework
requires:
sage: ">=1.0.0"
skills:
- "mobile"
activates-when:
detected: [flutter, firebase_core]
tags: [flutter, firebase, riverpod]
---
# flutter
**Layer 2 — Framework Pack**
Flutter patterns for modern development (3.x+). Widget architecture, state
management, Impeller renderer, platform-adaptive design, and the common
mistakes agents make from outdated tutorials.
## Philosophy
Flutter's "everything is a widget" model is simultaneously its greatest strength
and the main source of agent mistakes. Agents build monolithic widget trees with
thousands of lines, misuse `setState` for everything, nest widgets 15 levels
deep, and ignore the widget lifecycle. This pack establishes clean widget
architecture, proper state management selection, and Impeller-era performance
patterns.
## What's Included
| Type | Files | Coverage |
|------|-------|----------|
| Patterns | 7 | Widget architecture, state management, async/data, navigation, platform-adaptive, testing, performance |
| Anti-patterns | 5 | God widgets, setState everywhere, ignoring dispose, hardcoded dimensions, unnecessary packages |
| Constitution | 1 | 5 Flutter-specific principles |
| Gate | 1 | Flutter pattern compliance check |
## Stack Integrations (detection-gated)
When `firebase_core` is detected, read `integration/firebase-integration.md` for
the Flutter + Firebase + Riverpod seams — auth, Firestore, Cloud Functions, and
project structure — that the individual docs don't cover together. This folds in
the former `stack-flutter-firebase` skill; the content is unchanged.
Constitution: `constitution/firebase.constitution-additions.md` ·
anti-patterns: `anti-patterns/firebase-anti-patterns.md`.
Files in this package (10)
- README.md 1 KB
- SKILL.md 2 KB
- tests.md 2 KB
- anti-patterns/firebase-anti-patterns.md 2 KB
- anti-patterns/flutter-anti-patterns.md 3 KB
- constitution/firebase.constitution-additions.md 1 KB
- constitution/flutter.constitution-additions.md 1 KB
- gates/51-flutter-patterns.gate.md 1 KB
- integration/firebase-integration.md 4 KB
- patterns/flutter-patterns.md 5 KB
Versions
| Repository | Score | Licence |
|---|---|---|
| This page · xoai/sage | 85 | MIT |
| ericrisco/rsc-harness | 100 | MIT |
| nimadorostkar/Claude-Skills-collection | 100 | MIT |
| claude-dev-suite/claude-dev-suite | 100 | MIT |
| lynricsy/hyperskills | 100 | MIT |
| G1Joshi/Agent-Skills | 100 | MIT |
| ar4mirez/samuel | 100 | MIT |
| clawic/skills | 90 | MIT |
| dkbnull/hello-skill | 86 | MIT |
Database snapshot: 13.11.2026 · package version ded1d24922f8 (SHA-256 digest of the entire package)
Downloads in the last 30 days: 0 · ranking
Report a problem with this skill: harmful content, incorrect descriptions or an author’s removal request.
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