Immutable Patterns
thedaviddias/Front-End-Checklist
A skill your agent uses when reviewing scripts, client components, bundles, or runtime behavior related to Prefer immutable data patterns.
Design immutable state classes following AsyncRedux best practices.
Custom licenceAuto-check passed
Install Asyncredux State Design
$ npx skills add marcglasberg/async_redux --skill asyncredux-state-design -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install marcglasberg/async_redux asyncredux-state-design --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/marcglasberg/async_redux.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/asyncredux-state-design .claude/skills/asyncredux-state-design && 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 "asyncredux-state-design" agent skill from https://github.com/marcglasberg/async_redux/tree/master/.claude/skills/asyncredux-state-design into .claude/skills/asyncredux-state-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "asyncredux-state-design", 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/marcglasberg/async_redux/tree/master/.claude/skills/asyncredux-state-designType 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 marcglasberg/async_redux --skill asyncredux-state-design -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install marcglasberg/async_redux asyncredux-state-design --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/marcglasberg/async_redux.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.claude/skills/asyncredux-state-design .agents/skills/asyncredux-state-design && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "asyncredux-state-design" agent skill from https://github.com/marcglasberg/async_redux/tree/master/.claude/skills/asyncredux-state-design into .agents/skills/asyncredux-state-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "asyncredux-state-design", 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 marcglasberg/async_redux --skill asyncredux-state-design -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install marcglasberg/async_redux asyncredux-state-design --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/marcglasberg/async_redux.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.claude/skills/asyncredux-state-design .cursor/skills/asyncredux-state-design && 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 "asyncredux-state-design" agent skill from https://github.com/marcglasberg/async_redux/tree/master/.claude/skills/asyncredux-state-design into .cursor/skills/asyncredux-state-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "asyncredux-state-design", 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/marcglasberg/async_redux.git --path .claude/skills/asyncredux-state-design--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 marcglasberg/async_redux --skill asyncredux-state-design -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install marcglasberg/async_redux asyncredux-state-design --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/marcglasberg/async_redux.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.claude/skills/asyncredux-state-design .gemini/skills/asyncredux-state-design && 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 "asyncredux-state-design" agent skill from https://github.com/marcglasberg/async_redux/tree/master/.claude/skills/asyncredux-state-design into .gemini/skills/asyncredux-state-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "asyncredux-state-design", 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 marcglasberg/async_redux asyncredux-state-designInstalls 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 marcglasberg/async_redux --skill asyncredux-state-design -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/marcglasberg/async_redux.git skills-src && mkdir -p .github/skills && cp -r skills-src/.claude/skills/asyncredux-state-design .github/skills/asyncredux-state-design && 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 "asyncredux-state-design" agent skill from https://github.com/marcglasberg/async_redux/tree/master/.claude/skills/asyncredux-state-design into .github/skills/asyncredux-state-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "asyncredux-state-design", 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 marcglasberg/async_redux --skill asyncredux-state-design -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install marcglasberg/async_redux asyncredux-state-design --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/marcglasberg/async_redux.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.claude/skills/asyncredux-state-design .opencode/skills/asyncredux-state-design && 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 "asyncredux-state-design" agent skill from https://github.com/marcglasberg/async_redux/tree/master/.claude/skills/asyncredux-state-design into .opencode/skills/asyncredux-state-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "asyncredux-state-design", 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
asyncredux-state-design- GitHub stars
- 238
- Token cost
- ~2.2k tokens
- SKILL.md length
- 293 words
- Files
- 1
- Skills in repo
- 36
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Design immutable state classes following AsyncRedux best practices.
- Works in 3 steps: Final fields - All state fields must be… → initialState() - Static factory method… → copy() method - Creates modified…
- SKILL.md covers Core Principle: Immutability, Basic State Class Structure, The copy() Method Pattern and Nested/Composite State, plus 7 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Asyncredux State Design is an agent skill from marcglasberg/async_redux. Design immutable state classes following AsyncRedux best practices. Includes creating the AppState class with a copy() method, defining initialState(), composing nested state objects, and optionally using the fastimmutablecollections package for IList, ISet, and IMap.
Its SKILL.md is about 2.2k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
The repository describes itself as: Powerful State Management for Flutter. Docs: https://asyncredux.com.
Example prompts
- “/asyncredux-state-design”
Workflow steps
3 steps, taken from the first numbered list in SKILL.md.
- Final fields - All state fields must be final
- initialState() - Static factory method providing default values
- copy() method - Creates modified instances without mutating original
What it can do on your machine
Read from SKILL.md and the folder at commit bbc4303. 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 (its code samples are dart and yaml).
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):
asyncredux.com
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
Asyncredux State Design loads about 2.2k tokens when it runs. Until then it costs about 75 tokens; SKILL.md has 293 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
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 293 words (~2,239 tokens).
“State classes must be immutable—fields cannot be modified after creation. Instead of changing state directly, you create new instances. All fields should be marked final.”
- name
- asyncredux-state-design
Files
Just SKILL.md in .claude/skills/asyncredux-state-design of marcglasberg/async_redux.
Open the folder on GitHubat commit bbc4303
Compare with similar skills
Asyncredux State Design 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 |
|---|---|---|---|---|---|---|
| Asyncredux State Design this skillmarcglasberg/async_redux | 238 | — | ~2.2k | Automated safety check: Pass | Custom licence | |
| Immutable Patternsthedaviddias/Front-End-Checklist | 74k | — | ~505 | Automated safety check: Pass | MIT | |
| Follow Up Resultspaperclipai/paperclip | 99k | — | ~732 | Automated safety check: Pass | MIT | |
| Tabler Class Reference Tablestabler/tabler | 42k | — | ~1.4k | Automated safety check: Pass | MIT | |
| Large Class Stylesgl-project/sglang | 37k | 2 repos | ~1.9k | Automated safety check: Pass | Apache-2.0 | |
| Signals Scout PR Follow UpPostHog/posthog | 40k | — | ~8.7k | Automated safety check: Pass | Custom licence |
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Questions about Asyncredux State Design
What does Asyncredux State Design do?
Design immutable state classes following AsyncRedux best practices. Asyncredux State Design is an agent skill from marcglasberg/async_redux. Design immutable state classes following AsyncRedux best practices.
How do I install Asyncredux State Design in Claude Code?
Run `npx skills add marcglasberg/async_redux --skill asyncredux-state-design -a claude-code`. Or copy the skill folder (.claude/skills/asyncredux-state-design in marcglasberg/async_redux) into .claude/skills/asyncredux-state-design in your project. Claude Code loads it when a task matches its description.
How do I install Asyncredux State Design in Codex?
Run `npx skills add marcglasberg/async_redux --skill asyncredux-state-design -a codex`. Or copy the skill folder (.claude/skills/asyncredux-state-design in marcglasberg/async_redux) into .agents/skills/asyncredux-state-design in your project. Codex loads it when a task matches its description.
Can I use Asyncredux State Design 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 marcglasberg/async_redux --skill asyncredux-state-design -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/asyncredux-state-design, .gemini/skills/asyncredux-state-design, .github/skills/asyncredux-state-design and .opencode/skills/asyncredux-state-design in your project.
What does Asyncredux State Design need to run?
SKILL.md names no scripts, command-line tools or credentials: Asyncredux State Design is instructions for the agent only.
Does Asyncredux State Design access the network?
SKILL.md names 1 domain. As links in the text: asyncredux.com. This is read from the text; nothing was executed.
Is Asyncredux State Design 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 Asyncredux State Design use?
Asyncredux State Design has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Asyncredux State Design use?
About 2.2k tokens (SKILL.md is roughly 9k 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 Asyncredux State Design?
Skills that share tags, products or a category with Asyncredux State Design: Immutable Patterns (thedaviddias/Front-End-Checklist, 74k stars), Follow Up Results (paperclipai/paperclip, 99k stars), Tabler Class Reference Tables (tabler/tabler, 42k stars) and Large Class Style (sgl-project/sglang, 37k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Asyncredux State Design?
marcglasberg (a GitHub user) maintains it in marcglasberg/async_redux, which has 238 GitHub stars. The repository holds 36 skills in this directory. The repository was last updated on October 9, 2026.
Source: marcglasberg/async_redux on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.