Engine Whats New
flutter/flutter
Generates the "what's new" release summary and diff file for changes in the Flutter engine (//engine/src/flutter) between two releases (e.g., 3.47 vs 3.44).
Checks whether a template's generated iOS project drifts on its first Flutter build, caused by Flutter's built-in iOS project migrations, and folds the migrated files back into the brick.
Install iOS Migration Check
$ npx skills add VeryGoodOpenSource/very_good_templates --skill ios-migration-check -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install VeryGoodOpenSource/very_good_templates ios-migration-check --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/VeryGoodOpenSource/very_good_templates.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/ios-migration-check .claude/skills/ios-migration-check && 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 "ios-migration-check" agent skill from https://github.com/VeryGoodOpenSource/very_good_templates/tree/main/.agents/skills/ios-migration-check into .claude/skills/ios-migration-check/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ios-migration-check", 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/VeryGoodOpenSource/very_good_templates/tree/main/.agents/skills/ios-migration-checkType 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 VeryGoodOpenSource/very_good_templates --skill ios-migration-check -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install VeryGoodOpenSource/very_good_templates ios-migration-check --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/VeryGoodOpenSource/very_good_templates.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/ios-migration-check .agents/skills/ios-migration-check && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "ios-migration-check" agent skill from https://github.com/VeryGoodOpenSource/very_good_templates/tree/main/.agents/skills/ios-migration-check into .agents/skills/ios-migration-check/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ios-migration-check", 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 VeryGoodOpenSource/very_good_templates --skill ios-migration-check -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install VeryGoodOpenSource/very_good_templates ios-migration-check --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/VeryGoodOpenSource/very_good_templates.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/ios-migration-check .cursor/skills/ios-migration-check && 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 "ios-migration-check" agent skill from https://github.com/VeryGoodOpenSource/very_good_templates/tree/main/.agents/skills/ios-migration-check into .cursor/skills/ios-migration-check/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ios-migration-check", 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/VeryGoodOpenSource/very_good_templates.git --path .agents/skills/ios-migration-check--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 VeryGoodOpenSource/very_good_templates --skill ios-migration-check -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install VeryGoodOpenSource/very_good_templates ios-migration-check --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/VeryGoodOpenSource/very_good_templates.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/ios-migration-check .gemini/skills/ios-migration-check && 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 "ios-migration-check" agent skill from https://github.com/VeryGoodOpenSource/very_good_templates/tree/main/.agents/skills/ios-migration-check into .gemini/skills/ios-migration-check/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ios-migration-check", 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 VeryGoodOpenSource/very_good_templates ios-migration-checkInstalls 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 VeryGoodOpenSource/very_good_templates --skill ios-migration-check -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/VeryGoodOpenSource/very_good_templates.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/ios-migration-check .github/skills/ios-migration-check && 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 "ios-migration-check" agent skill from https://github.com/VeryGoodOpenSource/very_good_templates/tree/main/.agents/skills/ios-migration-check into .github/skills/ios-migration-check/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ios-migration-check", 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 VeryGoodOpenSource/very_good_templates --skill ios-migration-check -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install VeryGoodOpenSource/very_good_templates ios-migration-check --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/VeryGoodOpenSource/very_good_templates.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/ios-migration-check .opencode/skills/ios-migration-check && 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 "ios-migration-check" agent skill from https://github.com/VeryGoodOpenSource/very_good_templates/tree/main/.agents/skills/ios-migration-check into .opencode/skills/ios-migration-check/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ios-migration-check", 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
ios-migration-check- GitHub stars
- 174
- Token cost
- ~518 tokens
- SKILL.md length
- 153 words
- Files
- 1
- Skills in repo
- 2
- Repo updated
- First seen
- Licence
- None found
At a glance
Checks whether a template's generated iOS project drifts on its first Flutter build, caused by Flutter's built-in iOS project migrations, and folds the migrated files back into the brick.
- Tasks that involve Cross-platform mobile apps
- SKILL.md covers Detect drift and Fix drift
- Calls git and flutter
What it does
iOS Migration Check is an agent skill from VeryGoodOpenSource/very_good_templates. Checks whether a template's generated iOS project drifts on its first Flutter build, caused by Flutter's built-in iOS project migrations, and folds the migrated files back into the brick.
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 Cross-platform mobile apps. It works with iOS and Flutter. The repository describes itself as: Collection of open-source templates created and maintained by Very Good Ventures.
When your agent uses it
- Tasks that involve Cross-platform mobile apps
Example prompts
- “Use the ios-migration-check skill to check whether a template's generated iOS project drifts on its first Flutter build, caused by Flutter's…”
- “/ios-migration-check”
Requirements
- Pre-approved tools (allowed-tools): Read, Glob, Grep, Bash, Edit
What it can do on your machine
Read from SKILL.md and the folder at commit a2bc5a6. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves these tools, so the agent can use them without asking each time:
ReadGlobGrepBashEdit
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
gitflutter
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use git, which can reach the network depending on how they are called.
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
iOS Migration Check loads about 518 tokens when it runs. Until then it costs about 52 tokens; SKILL.md has 153 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: notes
The automated check noted patterns worth knowing about, such as sudo or a known installer.
- NotePre-approves every shell command (allowed-tools: Bash)SKILL.md
allowed-tools: Read, Glob, Grep, Bash, Edit
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
Without a licence we can't republish the file, so here is its outline and opening line. It has 153 words (~518 tokens).
“Flutter applies its own migrations to iOS projects on the first build. It rewrites settings that are behind its baseline, such as the deployment target, MinimumOSVersion, LastUpgradeCheck and scheme attributes. If a template falls behind, every generated app gets an…”
- name
- ios-migration-check
- allowed-tools
- Read, Glob, Grep, Bash, Edit
- when_to_use
- Use after bumping the Flutter SDK version a template targets, or when a freshly generated app shows unexpected changes under ios/ after its first flutter…
Files
Just SKILL.md in .agents/skills/ios-migration-check of VeryGoodOpenSource/very_good_templates.
Open the folder on GitHubat commit a2bc5a6
Compare with similar skills
iOS Migration Check 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 |
|---|---|---|---|---|---|---|
| iOS Migration Check this skillVeryGoodOpenSource/very_good_templates | 174 | — | ~518 | Automated safety check: Notes | None | |
| Engine Whats Newflutter/flutter | 179k | — | ~978 | Automated safety check: Pass | BSD-3-Clause | |
| Run Devicelab With Ledflutter/flutter | 179k | — | ~786 | Automated safety check: Pass | BSD-3-Clause | |
| Apple Designvrcm-team/VRCM | 179 | 1 repos | ~6.2k | Automated safety check: Pass | MIT | |
| Liquid Glass Widgetssdegenaar/liquid_glass_widgets | 712 | — | ~3.8k | Automated safety check: Pass | MIT | |
| OdevioOdevio/Odevio-CLI | 423 | — | ~7.6k | Automated safety check: Pass | MIT |
Similar skills
Run Devicelab With Led
flutter/flutter
Run DeviceLab tests for Flutter PRs using LUCI's led CLI tool.
Apple Design
vrcm-team/VRCM
Cross-platform UI/UX design reviewer grounded in Apple's Human Interface Guidelines (122 pages pulled from developer.apple.com, including 57 component pages) plus a design-craft lens for…
Liquid Glass Widgets
sdegenaar/liquid_glass_widgets
Mastery guide and architectural rules for liquidglasswidgets.
Odevio
Odevio/Odevio-CLI
Take a Flutter project to an iPhone or the App Store with Odevio - build, sign and publish iOS apps from Windows, Linux or macOS with no Mac and no Xcode.
Mobile Design
xenitV1/Antigravity-Workflows
Mobile-first design thinking and decision-making for iOS and Android apps.
More from VeryGoodOpenSource/very_good_templates
Mason
VeryGoodOpenSource/very_good_templates
Working with Mason bricks: installing the CLI, creating and consuming bricks, understanding brick structure, Mustache template syntax, hooks, and discovering bricks on BrickHub.
Related
Categories
Questions about iOS Migration Check
What does iOS Migration Check do?
Checks whether a template's generated iOS project drifts on its first Flutter build, caused by Flutter's built-in iOS project migrations, and folds the migrated files back into the brick. iOS Migration Check is an agent skill from VeryGoodOpenSource/very_good_templates. Checks whether a template's generated iOS project drifts on its first Flutter build, caused by Flutter's built-in iOS project migrations, and folds the migrated files back into the brick.
When should I use iOS Migration Check?
iOS Migration Check fits situations like: tasks that involve Cross-platform mobile apps.
How do I install iOS Migration Check in Claude Code?
Run `npx skills add VeryGoodOpenSource/very_good_templates --skill ios-migration-check -a claude-code`. Or copy the skill folder (.agents/skills/ios-migration-check in VeryGoodOpenSource/very_good_templates) into .claude/skills/ios-migration-check in your project. Claude Code loads it when a task matches its description.
How do I install iOS Migration Check in Codex?
Run `npx skills add VeryGoodOpenSource/very_good_templates --skill ios-migration-check -a codex`. Or copy the skill folder (.agents/skills/ios-migration-check in VeryGoodOpenSource/very_good_templates) into .agents/skills/ios-migration-check in your project. Codex loads it when a task matches its description.
Can I use iOS Migration Check 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 VeryGoodOpenSource/very_good_templates --skill ios-migration-check -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/ios-migration-check, .gemini/skills/ios-migration-check, .github/skills/ios-migration-check and .opencode/skills/ios-migration-check in your project.
What does iOS Migration Check need to run?
Going by SKILL.md and its folder, iOS Migration Check needs the command-line tools its instructions call (git and flutter). Its frontmatter pre-approves these tools: Read, Glob, Grep, Bash, Edit.
Does iOS Migration Check access the network?
SKILL.md contains no URLs. Its commands use git, which can reach the network depending on how they are called. This is read from the text; nothing was executed.
Is iOS Migration Check safe to install?
Our automated static check of SKILL.md found notes only (pre-approves every shell command (allowed-tools: bash)), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.
What licence does iOS Migration Check use?
No licence was found for iOS Migration Check or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does iOS Migration Check 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 iOS Migration Check?
Skills that share tags, products or a category with iOS Migration Check: Engine Whats New (flutter/flutter, 179k stars), Run Devicelab With Led (flutter/flutter, 179k stars), Apple Design (vrcm-team/VRCM, 179 stars) and Liquid Glass Widgets (sdegenaar/liquid_glass_widgets, 712 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains iOS Migration Check?
VeryGoodOpenSource (a GitHub organization) maintains it in VeryGoodOpenSource/very_good_templates, which has 174 GitHub stars. The repository holds 2 skills in this directory. The repository was last updated on October 5, 2026.
Source: VeryGoodOpenSource/very_good_templates on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.