ccpocket: Skill for Claude Code

.claude/skills/flutter-upgrade/SKILL.md

flutter-upgrade is a skill for Claude Code from K9i-0/ccpocket. It costs 113 tokens per session (1,495 once invoked), scanned A, original, MIT.

A workflow for upgrading the Flutter SDK and adapting a project to the new version. The Flutter SDK is the software package used to build Flutter applications.

In plain words
What is it for?
Use it when updating Flutter, investigating a newly released Flutter version, checking deprecated APIs, changing project version settings, and carrying out the required fixes and tests.
Why use it?
It helps find breaking changes—updates that can make existing code stop working—and identify their effects across the app, version manager, CI, and release tools.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

This is K9i-0/ccpocket's own configuration. It tells Claude Code how to work on ccpocket itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything ccpocket configures →

About the project

CC Pocket is a mobile and desktop client for controlling Codex and Claude coding-agent sessions through a self-hosted Bridge Server running on another computer. It lets users start sessions, approve actions, answer questions, review changes, and continue coding from supported devices. The catalogue entries provide the skills, hooks, MCP servers, agents, instructions, and settings used by this client.

K9i-0/ccpocket · 1,063 stars · on GitHub · k9i-0.github.io

Reuse

Borrowing it

Nothing to install: this file belongs to K9i-0/ccpocket. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/K9i-0/ccpocket/main/.claude/skills/flutter-upgrade/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/K9i-0/ccpocket

Made for: Claude Code.

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.

agentmods badge for flutter-upgrade

README.md
[![agentmods](https://agentmods.dev/badge/skills/k9i-0/ccpocket/flutter-upgrade.svg)](https://agentmods.dev/skills/k9i-0/ccpocket/flutter-upgrade)
Your own site
<a href="https://agentmods.dev/skills/k9i-0/ccpocket/flutter-upgrade"><img src="https://agentmods.dev/badge/skills/k9i-0/ccpocket/flutter-upgrade.svg" alt="Measured on agentmods" height="20"></a>
Per session 113 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,495 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00113 $0.01495
Opus 5 $0.00056 $0.00747
Sonnet 5 $0.00023 $0.00299
Haiku 4.5 $0.00011 $0.00150

Measured 7d ago against content hash 7c1b542f0322, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

flutter-upgrade 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.

.claude/skills/flutter-upgrade/SKILL.md · 149 lines

How it starts

The opening of the file, as written. The whole thing — 149 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Flutter Upgrade

Flutter SDKの新バージョンへのアップグレードを体系的に進めるスキル。 リリースノート調査からコード修正・検証まで一貫して対応する。

フェーズ1: 情報収集

1-1. リリースノート調査

WebSearch / WebFetch で以下を調査する:

  • Hotfix Issue: https://github.com/flutter/flutter/issues[stable] [hotfix] Flutter Release Version X.Y.Z を検索
  • Release Notes: https://docs.flutter.dev/release/release-notes/release-notes-X.Y.0
  • Breaking Changes: https://docs.flutter.dev/release/breaking-changes
  • Flutter blog: https://blog.flutter.dev の What's new 記事
  • CHANGELOG: https://github.com/flutter/flutter/blob/master/CHANGELOG.md

hotfix リリース (X.Y.1〜) の場合、メジャーリリース (X.Y.0) の Breaking Changes も含めて調査する。

1-2. 現在のプロジェクト状態を確認

# 現在のFlutterバージョン
flutter --version

# mise管理のバージョン
cat .mise.toml

# Dart SDK制約
grep -A1 'environment:' apps/mobile/pubspec.yaml

フェーズ2: プロジェクト影響分析

2-1. Breaking Changes のコードベースマッチング

リリースノートで見つかった Breaking Changes / 非推奨API それぞれについて、 Grep でコードベース内の使用箇所を検索する。

Grep pattern="<deprecated_api>" path="apps/mobile" glob="*.dart"

該当なし → 対応不要と明記。該当あり → ファイルと箇所数を記録。

2-2. プロジェクト固有の影響チェック

このプロジェクトには以下の固有構成があり、それぞれ確認が必要:

mise (バージョン管理)
  • .mise.tomlflutter バージョンを更新する必要がある
  • グローバルにも反映する (mise use --global)
CI/CD (GitHub Actions)
  • 全ワークフローが .mise.toml から Flutter バージョンを読み取る仕組み (grep 'flutter' .mise.tomlflutter-actionflutter-version)
  • .mise.toml を更新すれば全ワークフローに自動反映される
  • ワークフロー一覧を Grep で確認し、変更が正しく伝播するか確認する
grep -r "mise.toml" .github/workflows/
Shorebird (OTA パッチ)
  • Shorebird はリリース時の Flutter バージョンでビルドを管理する
  • 既存リリースへのパッチは旧バージョンで行う必要がある
  • 新バージョンで新リリースを作る場合は問題ない
  • shorebird doctor で互換性を確認する
dependency_overrides (一時的フォーク)
  • pubspec.yamldependency_overrides セクションを確認
  • 各オーバーライドが本家にマージ済み / pub.dev にリリース済みなら削除できるか調査
  • WebSearch で最新状況を確認する
パッケージ互換性
  • flutter pub outdated で非互換パッケージがないか確認
  • 特に Shorebird, Firebase, google_fonts など Flutter バージョンに敏感なパッケージに注意

2-3. Dart SDK 制約

  • pubspec.yamlenvironment.sdk が新バージョン同梱の Dart と互換か確認
  • 非互換なら SDK 制約の更新も必要

Read the full file on GitHub · 149 lines

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.

  1. 7d ago First seen · 149 lines · 113 tokens per session scan A 7c1b542f0322

Subscribe to this mod's changes

flutter-upgrade is a skill published in the GitHub repository K9i-0/ccpocket (1,063 stars, last pushed yesterday), licensed MIT. It adds 113 tokens to every session and 1,495 once invoked, about $0.0006 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 2026-08-30.

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