Flutter Animations
aiskillstore/marketplace
Comprehensive guide for implementing animations in Flutter. An agent skill from aiskillstore/marketplace.
Prevent UI freezes and ensure a responsive user experience by validating threading rules and migrating blocking calls off the Event Dispatch Thread (EDT).
Install Audit UI Thread Safety
$ npx skills add flutter/flutter-intellij --skill audit-ui-thread-safety -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install flutter/flutter-intellij audit-ui-thread-safety --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/audit-ui-thread-safety .claude/skills/audit-ui-thread-safety && 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 "audit-ui-thread-safety" agent skill from https://github.com/flutter/flutter-intellij/tree/main/.agents/skills/audit-ui-thread-safety into .claude/skills/audit-ui-thread-safety/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "audit-ui-thread-safety", 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/audit-ui-thread-safetyType 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 audit-ui-thread-safety -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install flutter/flutter-intellij audit-ui-thread-safety --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/audit-ui-thread-safety .agents/skills/audit-ui-thread-safety && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "audit-ui-thread-safety" agent skill from https://github.com/flutter/flutter-intellij/tree/main/.agents/skills/audit-ui-thread-safety into .agents/skills/audit-ui-thread-safety/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "audit-ui-thread-safety", 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 audit-ui-thread-safety -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install flutter/flutter-intellij audit-ui-thread-safety --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/audit-ui-thread-safety .cursor/skills/audit-ui-thread-safety && 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 "audit-ui-thread-safety" agent skill from https://github.com/flutter/flutter-intellij/tree/main/.agents/skills/audit-ui-thread-safety into .cursor/skills/audit-ui-thread-safety/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "audit-ui-thread-safety", 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/audit-ui-thread-safety--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 audit-ui-thread-safety -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install flutter/flutter-intellij audit-ui-thread-safety --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/audit-ui-thread-safety .gemini/skills/audit-ui-thread-safety && 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 "audit-ui-thread-safety" agent skill from https://github.com/flutter/flutter-intellij/tree/main/.agents/skills/audit-ui-thread-safety into .gemini/skills/audit-ui-thread-safety/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "audit-ui-thread-safety", 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 audit-ui-thread-safetyInstalls 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 audit-ui-thread-safety -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/audit-ui-thread-safety .github/skills/audit-ui-thread-safety && 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 "audit-ui-thread-safety" agent skill from https://github.com/flutter/flutter-intellij/tree/main/.agents/skills/audit-ui-thread-safety into .github/skills/audit-ui-thread-safety/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "audit-ui-thread-safety", 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 audit-ui-thread-safety -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 audit-ui-thread-safety --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/audit-ui-thread-safety .opencode/skills/audit-ui-thread-safety && 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 "audit-ui-thread-safety" agent skill from https://github.com/flutter/flutter-intellij/tree/main/.agents/skills/audit-ui-thread-safety into .opencode/skills/audit-ui-thread-safety/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "audit-ui-thread-safety", 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
audit-ui-thread-safety- GitHub stars
- 2k
- Token cost
- ~518 tokens
- SKILL.md length
- 266 words
- Files
- 1
- Skills in repo
- 14
- Repo updated
- First seen
- Licence
- BSD-3-Clause
At a glance
Prevent UI freezes and ensure a responsive user experience by validating threading rules and migrating blocking calls off the Event Dispatch Thread (EDT).
- Works in 7 steps: Baseline → Audit EDT Usage → Identify Blocking Calls → …
- Tasks that involve UX design
- SKILL.md covers Objective and Workflow Instructions
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Audit UI Thread Safety is an agent skill from flutter/flutter-intellij. Prevent UI freezes and ensure a responsive user experience by validating threading rules and migrating blocking calls off the Event Dispatch Thread (EDT).
Its SKILL.md is about 520 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 UX design and Cross-platform mobile apps. It works with Flutter. The repository describes itself as: Flutter Plugin for IntelliJ. The licence is BSD-3-Clause.
When your agent uses it
- Tasks that involve UX design
- Tasks that involve Cross-platform mobile apps
Example prompts
- “/audit-ui-thread-safety”
Workflow steps
7 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
No URLs in SKILL.md.
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
Audit UI Thread Safety loads about 518 tokens when it runs. Until then it costs about 44 tokens; SKILL.md has 266 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). 266 words, ~518 tokens.
Download SKILL.mdSave it as
.claude/skills/audit-ui-thread-safety/SKILL.md (or your agent's skills folder).- name
- audit-ui-thread-safety
- description
- Prevent UI freezes and ensure a responsive user experience by validating threading rules and migrating blocking calls off the Event Dispatch Thread (EDT).
Skill: UI Thread Safety & Responsiveness
You are tasked with preventing UI freezes and ensuring a responsive user experience by validating threading rules.
Objective
Prevent UI freezes and ensure a responsive user experience by validating threading rules.
Workflow Instructions
1. Baseline
- Run
./gradlew testand./gradlew verifyPluginto ensure the project is in a good state before refactoring.
2. Audit EDT Usage
- Search for usages of
runInEdt,invokeLater, andinvokeAndWait.
3. Identify Blocking Calls
- Ensure no I/O operations (file access, network calls) or heavy computations occur within these UI blocks.
4. Migrate to Background
- Refactor heavy tasks to run on background threads using
Task.BackgroundableorReadAction.nonBlocking.
5. Check Modality
- Verify that modal dialogs do not block the UI thread unnecessarily.
6. Verify
- Run
./gradlew testClassesto ensure safe refactoring. - Run
./gradlew testand./gradlew verifyPluginto ensure no regressions. - Run the plugin in a sandbox (
./gradlew runIde) and perform key actions while monitoring for UI freezes. - Suggest manual test steps: Check the code changes made and write test steps for a user to execute that will trigger the code paths that have changed. If needed, add logging statements to verify that the code paths have successfully run.
7. Report & Review
- Summarize the threading fixes.
- Test Location: Explicitly state where in the IDE the user should go to test the changed functionality (e.g., "Go to Preferences > Languages & Frameworks > Flutter").
- Action: Ask the user to review the changes closely to ensure no deadlocks or UI freezes are introduced.
- Do not commit or push.
- Provide a suggested Git commit message (e.g., "Fix UI freeze: Move heavy computation to background task").
© 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/audit-ui-thread-safety of flutter/flutter-intellij.
Open the folder on GitHubat commit 6d5ab33
Compare with similar skills
Audit UI Thread Safety 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 |
|---|---|---|---|---|---|---|
| Audit UI Thread Safety this skillflutter/flutter-intellij | 2k | — | ~518 | Automated safety check: Pass | BSD-3-Clause | |
| Flutter Animationsaiskillstore/marketplace | 430 | — | ~3.7k | Automated safety check: Pass | None | |
| Native Desktop UI TestingFNOSP/FlyNarwhal | 495 | — | ~2.4k | Automated safety check: Pass | AGPL-3.0 | |
| Flutter Dart Code Reviewaffaan-m/ECC | 274k | 2 repos | ~5.8k | Automated safety check: Notes | MIT | |
| Mobile App UI Designceorkm/mobile-app-ui-design | 400 | — | ~2k | Automated safety check: Pass | None | |
| Cue AnimationsMilad-Akarie/cue | 119 | 1 repos | ~6.6k | Automated safety check: Pass | MIT |
Similar skills
Native Desktop UI Testing
FNOSP/FlyNarwhal
Run and verify Flutter desktop behavior on Windows/macOS/Linux native clients.
Flutter Dart Code Review
affaan-m/ECC
Library-agnostic Flutter/Dart code review checklist covering widget best practices, state management patterns (BLoC, Riverpod, Provider, GetX, MobX, Signals), Dart idioms, performance…
Mobile App UI Design
ceorkm/mobile-app-ui-design
Design high-quality mobile app UI/UX screens, flows, and components.
Cue Animations
Milad-Akarie/cue
Flutter animation using the Cue package. An agent skill from Milad-Akarie/cue.
Marionette Flutter Drive App
leancodepl/marionette_mcp
Set up and drive a running Flutter app (debug or profile) with Marionette — an AI agent's hands and eyes for the app.
More from flutter/flutter-intellij
All 14 skills in this repoRelease Plugin
flutter/flutter-intellij
Prepare and execute a new release for the flutter-intellij plugin, including updating dependencies, compatibility bounds, changelogs, and verification.
Add Missing Unit Test
flutter/flutter-intellij
Add a new unit test for a class that currently lacks one or add a new test case to an existing test file, verifying improvement with Kover.
Audit Accessibility
flutter/flutter-intellij
Ensure the plugin's custom UI components are accessible to users with screen readers and other assistive technologies.
Audit Dependencies
flutter/flutter-intellij
Optimize plugin size and security by removing unused dependencies and updating outdated libraries.
Cleanup Code Inspections
flutter/flutter-intellij
Reduce technical debt and improve code quality by systematically resolving static analysis warnings.
Code Review
flutter/flutter-intellij
Perform a pedantic, multi-perspective code review on the current diff or git changes against the styleguide and software engineering best practices.
Related
Works with
Categories
Questions about Audit UI Thread Safety
What does Audit UI Thread Safety do?
Prevent UI freezes and ensure a responsive user experience by validating threading rules and migrating blocking calls off the Event Dispatch Thread (EDT). Audit UI Thread Safety is an agent skill from flutter/flutter-intellij. Prevent UI freezes and ensure a responsive user experience by validating threading rules and migrating blocking calls off the Event Dispatch Thread (EDT).
When should I use Audit UI Thread Safety?
Audit UI Thread Safety fits situations like: tasks that involve UX design; tasks that involve Cross-platform mobile apps.
How do I install Audit UI Thread Safety in Claude Code?
Run `npx skills add flutter/flutter-intellij --skill audit-ui-thread-safety -a claude-code`. Or copy the skill folder (.agents/skills/audit-ui-thread-safety in flutter/flutter-intellij) into .claude/skills/audit-ui-thread-safety in your project. Claude Code loads it when a task matches its description.
How do I install Audit UI Thread Safety in Codex?
Run `npx skills add flutter/flutter-intellij --skill audit-ui-thread-safety -a codex`. Or copy the skill folder (.agents/skills/audit-ui-thread-safety in flutter/flutter-intellij) into .agents/skills/audit-ui-thread-safety in your project. Codex loads it when a task matches its description.
Can I use Audit UI Thread Safety 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 audit-ui-thread-safety -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/audit-ui-thread-safety, .gemini/skills/audit-ui-thread-safety, .github/skills/audit-ui-thread-safety and .opencode/skills/audit-ui-thread-safety in your project.
What does Audit UI Thread Safety need to run?
SKILL.md names no scripts, command-line tools or credentials: Audit UI Thread Safety is instructions for the agent only.
Does Audit UI Thread Safety access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Audit UI Thread Safety 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 Audit UI Thread Safety use?
Audit UI Thread Safety 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 Audit UI Thread Safety use?
About 518 tokens (SKILL.md is roughly 2.1k 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 Audit UI Thread Safety?
Skills that share tags, products or a category with Audit UI Thread Safety: Flutter Animations (aiskillstore/marketplace, 430 stars), Native Desktop UI Testing (FNOSP/FlyNarwhal, 495 stars), Flutter Dart Code Review (affaan-m/ECC, 274k stars) and Mobile App UI Design (ceorkm/mobile-app-ui-design, 400 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Audit UI Thread Safety?
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.