Android Dev
sickn33/agentic-awesome-skills
Production-grade Android app development guide covering native (Kotlin/Java), cross-platform (Flutter, RN, KMM), and hybrid architectures.
Optimize memory usage, consistency, and performance by migrating standard Java/Kotlin classes to IntelliJ's specialized com.intellij.util implementations.
Install Migrate Intellij Util
$ npx skills add flutter/flutter-intellij --skill migrate-intellij-util -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install flutter/flutter-intellij migrate-intellij-util --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/flutter/flutter-intellij.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/migrate-intellij-util .claude/skills/migrate-intellij-util && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "migrate-intellij-util" agent skill from https://github.com/flutter/flutter-intellij/tree/main/.agents/skills/migrate-intellij-util into .claude/skills/migrate-intellij-util/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "migrate-intellij-util", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/flutter/flutter-intellij/tree/main/.agents/skills/migrate-intellij-utilType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add flutter/flutter-intellij --skill migrate-intellij-util -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install flutter/flutter-intellij migrate-intellij-util --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/flutter/flutter-intellij.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/migrate-intellij-util .agents/skills/migrate-intellij-util && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "migrate-intellij-util" agent skill from https://github.com/flutter/flutter-intellij/tree/main/.agents/skills/migrate-intellij-util into .agents/skills/migrate-intellij-util/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "migrate-intellij-util", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add flutter/flutter-intellij --skill migrate-intellij-util -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install flutter/flutter-intellij migrate-intellij-util --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/flutter/flutter-intellij.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/migrate-intellij-util .cursor/skills/migrate-intellij-util && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "migrate-intellij-util" agent skill from https://github.com/flutter/flutter-intellij/tree/main/.agents/skills/migrate-intellij-util into .cursor/skills/migrate-intellij-util/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "migrate-intellij-util", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/flutter/flutter-intellij.git --path .agents/skills/migrate-intellij-util--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add flutter/flutter-intellij --skill migrate-intellij-util -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install flutter/flutter-intellij migrate-intellij-util --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/flutter/flutter-intellij.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/migrate-intellij-util .gemini/skills/migrate-intellij-util && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "migrate-intellij-util" agent skill from https://github.com/flutter/flutter-intellij/tree/main/.agents/skills/migrate-intellij-util into .gemini/skills/migrate-intellij-util/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "migrate-intellij-util", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install flutter/flutter-intellij migrate-intellij-utilInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add flutter/flutter-intellij --skill migrate-intellij-util -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/flutter/flutter-intellij.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/migrate-intellij-util .github/skills/migrate-intellij-util && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "migrate-intellij-util" agent skill from https://github.com/flutter/flutter-intellij/tree/main/.agents/skills/migrate-intellij-util into .github/skills/migrate-intellij-util/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "migrate-intellij-util", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add flutter/flutter-intellij --skill migrate-intellij-util -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install flutter/flutter-intellij migrate-intellij-util --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/flutter/flutter-intellij.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/migrate-intellij-util .opencode/skills/migrate-intellij-util && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "migrate-intellij-util" agent skill from https://github.com/flutter/flutter-intellij/tree/main/.agents/skills/migrate-intellij-util into .opencode/skills/migrate-intellij-util/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "migrate-intellij-util", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
migrate-intellij-util- GitHub stars
- 2k
- Token cost
- ~600 tokens
- SKILL.md length
- 256 words
- Files
- 1
- Skills in repo
- 14
- Repo updated
- First seen
- Licence
- BSD-3-Clause
At a glance
Optimize memory usage, consistency, and performance by migrating standard Java/Kotlin classes to IntelliJ's specialized com.intellij.util implementations.
- Works in 6 steps: Baseline → Select Target → Constraint → …
- Tasks that involve Android development
- SKILL.md covers Objective, Candidates for Migration and Workflow Instructions
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Migrate Intellij Util is an agent skill from flutter/flutter-intellij. Optimize memory usage, consistency, and performance by migrating standard Java/Kotlin classes to IntelliJ's specialized com.intellij.util implementations.
Its SKILL.md is about 600 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Mobile, covering Android development and Cross-platform mobile apps. It works with JetBrains IDEs, Java, Flutter and Kotlin. The repository describes itself as: Flutter Plugin for IntelliJ. The licence is BSD-3-Clause.
When your agent uses it
- Tasks that involve Android development
- Tasks that involve Cross-platform mobile apps
Example prompts
- “/migrate-intellij-util”
Workflow steps
6 steps, taken from the step headings in SKILL.md.
What it can do on your machine
Read from SKILL.md and the folder at commit 6d5ab33. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
javadoc.jetbrains.net
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Migrate Intellij Util loads about 600 tokens when it runs. Until then it costs about 44 tokens; SKILL.md has 256 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from flutter/flutter-intellij at commit 6d5ab33, republished under its BSD-3-Clause licence (© flutter). 256 words, ~600 tokens.
Download SKILL.mdSave it as
.claude/skills/migrate-intellij-util/SKILL.md (or your agent's skills folder).- name
- migrate-intellij-util
- description
- Optimize memory usage, consistency, and performance by migrating standard Java/Kotlin classes to IntelliJ's specialized com.intellij.util implementations.
Skill: API Migration to use com.intellij.util.* classes and methods
You are tasked with optimizing memory usage, consistency, and performance by migrating standard Java/Kotlin classes to IntelliJ's specialized com.intellij.util implementations.
Objective
Go read https://javadoc.jetbrains.net/teamcity/openapi/current/com/intellij/util/package-summary.html, and then optimize memory usage, consistency, and performance by migrating standard Java/Kotlin classes to IntelliJ's specialized com.intellij.util implementations.
Candidates for Migration
ArrayList->SmartList(for potentially empty/small lists)HashMap/ConcurrentHashMap->ContainerUtilmapsStringmanipulation ->StringUtil(e.g.,isEmpty,join,notNullize)Path/Filestring manipulation ->PathUtiljavax.swing.Timer->Alarm(for UI-related callbacks/debouncing)- Null checks ->
ObjectUtils(e.g.,doIfNotNull,coalesce) - Array resizing/merging ->
ArrayUtil
Workflow Instructions
1. Baseline
- Run
./gradlew testClasses,./gradlew test, and./gradlew verifyPluginto ensure project is in a good state.
2. Select Target
- Identify a single migration opportunity within a single package.
3. Constraint
- Keep the change extremely small (max 50 lines of code change).
4. Migrate
- Replace standard API with the
com.intellij.utilequivalent.
5. Verify
- Run
./gradlew testClassesto ensure migration didn't break test compilation. - Run
./gradlew testand./gradlew verifyPluginto ensure no regressions. - Suggest manual test steps: Check code changes made and write test steps for a user to execute that will trigger changed code paths. If needed, add logging statements to verify code paths have successfully run.
6. Report & Review
- Summarize the migration.
- Test Location: Explicitly state where in the IDE user should go to test changed functionality (e.g., "Go to Preferences > Languages & Frameworks > Flutter").
- Action: Ask user to review changes closely.
- Do not commit or push.
- Provide a suggested Git commit message (e.g., "Migrate code to use StringUtil in [Class Name]").
© flutter, BSD-3-Clause. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in .agents/skills/migrate-intellij-util of flutter/flutter-intellij.
Open the folder on GitHubat commit 6d5ab33
Compare with similar skills
Migrate Intellij Util next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Migrate Intellij Util this skillflutter/flutter-intellij | 2k | — | ~600 | Automated safety check: Pass | BSD-3-Clause | |
| Android Devsickn33/agentic-awesome-skills | 47k | 1 repos | ~536 | Automated safety check: Pass | MIT | |
| Compose Multiplatform Patternsmonta-app/ocpp-emulator | 179 | 5 repos | ~2k | Automated safety check: Pass | Apache-2.0 | |
| Frb Android Emulator Preparefzyzcjy/flutter_rust_bridge | 5.4k | — | ~2.1k | Automated safety check: Notes | MIT | |
| Claude Android NinjaDrjacky/claude-android-ninja | 124 | — | ~5.2k | Automated safety check: Pass | Apache-2.0 | |
| Android Audio E2Ehyochan/react-native-nitro-sound | 961 | — | ~814 | Automated safety check: Pass | MIT |
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Related
Works with
Categories
Questions about Migrate Intellij Util
What does Migrate Intellij Util do?
Optimize memory usage, consistency, and performance by migrating standard Java/Kotlin classes to IntelliJ's specialized com.intellij.util implementations. Migrate Intellij Util is an agent skill from flutter/flutter-intellij.util implementations.
When should I use Migrate Intellij Util?
Migrate Intellij Util fits situations like: tasks that involve Android development; tasks that involve Cross-platform mobile apps.
How do I install Migrate Intellij Util in Claude Code?
Run `npx skills add flutter/flutter-intellij --skill migrate-intellij-util -a claude-code`. Or copy the skill folder (.agents/skills/migrate-intellij-util in flutter/flutter-intellij) into .claude/skills/migrate-intellij-util in your project. Claude Code loads it when a task matches its description.
How do I install Migrate Intellij Util in Codex?
Run `npx skills add flutter/flutter-intellij --skill migrate-intellij-util -a codex`. Or copy the skill folder (.agents/skills/migrate-intellij-util in flutter/flutter-intellij) into .agents/skills/migrate-intellij-util in your project. Codex loads it when a task matches its description.
Can I use Migrate Intellij Util in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add flutter/flutter-intellij --skill migrate-intellij-util -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/migrate-intellij-util, .gemini/skills/migrate-intellij-util, .github/skills/migrate-intellij-util and .opencode/skills/migrate-intellij-util in your project.
What does Migrate Intellij Util need to run?
SKILL.md names no scripts, command-line tools or credentials: Migrate Intellij Util is instructions for the agent only.
Does Migrate Intellij Util access the network?
SKILL.md names 1 domain. As links in the text: javadoc.jetbrains.net. This is read from the text; nothing was executed.
Is Migrate Intellij Util safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Migrate Intellij Util use?
Migrate Intellij Util is published under the BSD-3-Clause licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Migrate Intellij Util use?
About 600 tokens (SKILL.md is roughly 2.4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Migrate Intellij Util?
Skills that share tags, products or a category with Migrate Intellij Util: Android Dev (sickn33/agentic-awesome-skills, 47k stars), Compose Multiplatform Patterns (monta-app/ocpp-emulator, 179 stars), Frb Android Emulator Prepare (fzyzcjy/flutter_rust_bridge, 5.4k stars) and Claude Android Ninja (Drjacky/claude-android-ninja, 124 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Migrate Intellij Util?
flutter (a GitHub organization) maintains it in flutter/flutter-intellij, which has 2,016 GitHub stars. The repository holds 14 skills in this directory. The repository was last updated on October 5, 2026.
Source: flutter/flutter-intellij on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.