flutter-expert

An agent skill by Jeffallan, from Jeffallan/claude-skills. Tags: automation, design, flutter, mobile, performance, reactive.

What it does

Use when building cross-platform applications with Flutter 3+ and Dart. Invoke for widget development, Riverpod/Bloc state management, GoRouter navigation, platform-specific implementations, performance optimization.

Install

With the skills CLI, which installs into Claude Code, Codex, Cursor and other agents:

npx skills add Jeffallan/claude-skills --skill flutter-expert

Or copy the skill folder into Claude Code's skills directory by hand (~/.claude/skills for every project, or .claude/skills inside one):

git clone --depth 1 https://github.com/Jeffallan/claude-skills
cp -r claude-skills/skills/flutter-expert ~/.claude/skills/flutter-expert

Safety box score

Grade B, low risk: 11 of 100 risk points, rated 2026-10-20. The grade rates what the skill and its scripts can reach on the machine of whoever installs it, across eight categories from shell execution to secrets access. How the score works.

This skill is a Flutter/Dart development guide: it runs standard project commands (`flutter pub get`, `flutter analyze`, `flutter test`, `flutter run --profile`) and points at project-local files like `pubspec.yaml` and `lib/`. The main risks are normal build-tool execution and dependency downloads from pub.dev; it does not include scripts, secrets handling, or machine-wide changes.

Category levels, from 0 (none) to 3 (high)
Category	Level	Why
Code & shell execution	1 (low)	The workflow explicitly runs Flutter commands such as `flutter pub get`, `flutter analyze`, `flutter test`, and `flutter run --profile`.
Network access	1 (low)	It can contact pub.dev to fetch packages and tooling, including `flutter pub global activate devtools` and `flutter pub get`.
Filesystem reach	1 (low)	Its scope is the project workspace (`pubspec.yaml`, `lib/`, `routes/`) and it does not describe writing outside the repo.
Secrets & credentials	0 (none)	No token, password, keychain, `.env`, or login handling appears in the skill files.
Privilege & persistence	0 (none)	There is no `sudo`, service registration, shell startup editing, or OS/global configuration beyond normal project tooling.
Instruction hijack surface	0 (none)	The files do not tell the agent to ignore instructions, hide actions, or follow remote content.
Irreversible actions	0 (none)	It does not push, deploy, post, pay, or delete anything; it only advises local development and testing.
Transparency	0 (none)	All shipped files are readable markdown; there are no binaries, encoded payloads, or generated installers.

Before installing

Read `SKILL.md` to confirm it only targets Flutter project files and local tooling.
If you want to avoid downloads, test once with network access disabled and see whether `flutter pub get` / DevTools activation are acceptable.
Check whether your workflow tolerates dependency graph changes from `flutter pub upgrade --major-versions`.

Rated 2026-10-20 by an automated review of 7 files from the skill's repository.

Source

Repository: Jeffallan/claude-skills (all skills from this repository)
Path: skills/flutter-expert/SKILL.md
Branch: main
Updated: 2026-09-19

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