Agent skill

Mvvm Architecture

Plan, review, and develop desktop and mobile app features following our MVVM architectural pattern.

Install Mvvm Architecture

skills CLI

$ npx skills add LedgerHQ/ledger-live --skill mvvm-architecture -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install LedgerHQ/ledger-live mvvm-architecture --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/LedgerHQ/ledger-live.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/mvvm-architecture .claude/skills/mvvm-architecture && rm -rf skills-src

Use ~/.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/

Paste into Claude Code

Install the "mvvm-architecture" agent skill from https://github.com/LedgerHQ/ledger-live/tree/develop/.agents/skills/mvvm-architecture into .claude/skills/mvvm-architecture/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mvvm-architecture", 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

$skill-installer install https://github.com/LedgerHQ/ledger-live/tree/develop/.agents/skills/mvvm-architecture

Type 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.

skills CLI

$ npx skills add LedgerHQ/ledger-live --skill mvvm-architecture -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install LedgerHQ/ledger-live mvvm-architecture --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/LedgerHQ/ledger-live.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/mvvm-architecture .agents/skills/mvvm-architecture && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "mvvm-architecture" agent skill from https://github.com/LedgerHQ/ledger-live/tree/develop/.agents/skills/mvvm-architecture into .agents/skills/mvvm-architecture/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mvvm-architecture", 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.

skills CLI

$ npx skills add LedgerHQ/ledger-live --skill mvvm-architecture -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install LedgerHQ/ledger-live mvvm-architecture --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/LedgerHQ/ledger-live.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/mvvm-architecture .cursor/skills/mvvm-architecture && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "mvvm-architecture" agent skill from https://github.com/LedgerHQ/ledger-live/tree/develop/.agents/skills/mvvm-architecture into .cursor/skills/mvvm-architecture/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mvvm-architecture", 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

$ gemini skills install https://github.com/LedgerHQ/ledger-live.git --path .agents/skills/mvvm-architecture

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add LedgerHQ/ledger-live --skill mvvm-architecture -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install LedgerHQ/ledger-live mvvm-architecture --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/LedgerHQ/ledger-live.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/mvvm-architecture .gemini/skills/mvvm-architecture && rm -rf skills-src

Use ~/.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/

Paste into Gemini CLI

Install the "mvvm-architecture" agent skill from https://github.com/LedgerHQ/ledger-live/tree/develop/.agents/skills/mvvm-architecture into .gemini/skills/mvvm-architecture/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mvvm-architecture", 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.

GitHub CLI

$ gh skill install LedgerHQ/ledger-live mvvm-architecture

Installs 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).

skills CLI

$ npx skills add LedgerHQ/ledger-live --skill mvvm-architecture -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/LedgerHQ/ledger-live.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/mvvm-architecture .github/skills/mvvm-architecture && rm -rf skills-src

Use ~/.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/

Paste into GitHub Copilot

Install the "mvvm-architecture" agent skill from https://github.com/LedgerHQ/ledger-live/tree/develop/.agents/skills/mvvm-architecture into .github/skills/mvvm-architecture/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mvvm-architecture", 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.

skills CLI

$ npx skills add LedgerHQ/ledger-live --skill mvvm-architecture -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install LedgerHQ/ledger-live mvvm-architecture --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/LedgerHQ/ledger-live.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/mvvm-architecture .opencode/skills/mvvm-architecture && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "mvvm-architecture" agent skill from https://github.com/LedgerHQ/ledger-live/tree/develop/.agents/skills/mvvm-architecture into .opencode/skills/mvvm-architecture/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mvvm-architecture", 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: mvvm-architecture
GitHub stars: 622
Token cost: ~902 tokens
SKILL.md length: 307 words
Files: 1
Skills in repo: 51
Repo updated: Oct 10, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

Plan, review, and develop desktop and mobile app features following our MVVM architectural pattern.

Tasks that involve React components
SKILL.md covers The new standard for desktop…, Folder Structure, Component & File Patterns and ViewModel Pattern, plus 4 more sections
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Mvvm Architecture is an agent skill from LedgerHQ/ledger-live. Plan, review, and develop desktop and mobile app features following our MVVM architectural pattern. Applies to all new .ts and .tsx files within /apps/ledger-live-desktop or /apps/ledger-live-mobile

Its SKILL.md is about 900 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 Frontend & Design, covering React components. It works with Redux. The repository describes itself as: Mono-repository for Ledger Wallet apps and related packages. The licence is MIT.

When your agent uses it

Tasks that involve React components

Example prompts

“/mvvm-architecture”

What it can do on your machine

Read from SKILL.md and the folder at commit 46bd13a. 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

Mvvm Architecture loads about 902 tokens when it runs. Until then it costs about 54 tokens; SKILL.md has 307 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~54
When it runs · the whole SKILL.md, loaded when a task matches: ~902

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 LedgerHQ/ledger-live at commit 46bd13a, republished under its MIT licence (© LedgerHQ). 307 words, ~902 tokens.

Download SKILL.mdSave it as .claude/skills/mvvm-architecture/SKILL.md (or your agent's skills folder).

name: mvvm-architecture
description: Plan, review, and develop desktop and mobile app features following our MVVM architectural pattern. Applies to all new .ts and .tsx files within /apps/ledger-live-desktop or /apps/ledger-live-mobile

MVVM Architecture

The new standard for desktop and mobile apps

New code for ledger-live-desktop and ledger-live-mobile must go into src/mvvm/
Eventually no feature code within these apps will live outside of src/mvvm
New features, screens, components, hooks, and utilities belong in src/mvvm/
Code changes with src/mvvm must conform to these mvvm patterns
Code reviews enforce strict adherence

Folder Structure

src/mvvm/
├── features/
│   └── FeatureName/
│       ├── __integrations__/    ← mandatory integration tests
│       ├── components/          ← reusable UI across screens
│       ├── screens/             ← individual screen folders
│       ├── hooks/               ← feature-specific hooks
│       └── utils/               ← feature-scoped utilities
├── components/                  ← global shared UI
├── hooks/
└── utils/

Feature Folder Responsibilities

components/ gathers reusable UI elements across multiple screens.
screens/ contains individual screen folders and their private building blocks.
hooks/ contains feature-specific reusable hooks.
utils/ contains feature-scoped utilities.

Nesting Guidelines

Place elements inside the closest folder matching their reuse scope.
Screen-specific building blocks stay inside the screen folder.
Feature-level components belong to FeatureName/components/.
Global shared UI belongs to src/mvvm/components/.

Component & File Patterns

Each component in its own folder with index.tsx as entry.
ViewModel hooks always named use<ComponentName>ViewModel.ts.
Support files alongside: types.ts, styles.ts.
Use List / Detail naming for multi-view workflows.
Utilities stay in utils/, separate from component folders.

ViewModel Pattern

Components needing external logic use Container → ViewModel → View:

The ViewModel produces data and handlers.
The View receives everything via props — no direct hook calls to external systems.

Violation checklist — flag if any `index.tsx` View under `screens/` or `components/` within `src/mvvm/`:

Imports useSelector or useDispatch from react-redux
Imports useNavigation or useRoute from @react-navigation/*
Calls any RTK Query hook (useGet*Query, use*Mutation)
Has no corresponding use<Name>ViewModel.ts in the same directory

❌ screens/UserProfileScreen/
     index.tsx   ← imports useSelector, useNavigation directly

✅ screens/UserProfileScreen/
     index.tsx                         ← props only
     useUserProfileScreenViewModel.ts  ← useSelector, useNavigation, RTK Query

Import Rules

Keep relative imports shallow (within one directory level).
Use TypeScript path aliases for broader access.
Never import index.tsx explicitly — use folder alias exports.

Data Fetching

Use RTK Query (dada-client and cal-client are reference implementations). See rtk-query-api skill.

Design System

New UI in src/mvvm/ must use Lumen:

Desktop: ldls-web skill
Mobile: ldls-native skill

Testing

Every new feature under src/mvvm/ must have an integration test in __integrations__/ — create a minimal test when the folder is first added. See testing skill.

Files

Just SKILL.md in .agents/skills/mvvm-architecture of LedgerHQ/ledger-live.

Open the folder on GitHubat commit 46bd13a

Compare with similar skills

Mvvm Architecture 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.

Mvvm Architecture compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Mvvm Architecture this skillLedgerHQ/ledger-live	622	—	~902	Automated safety check: Pass	MIT	today
Frontendredis/RedisInsight	8.9k	—	~3.2k	Automated safety check: Pass	Custom licence	5 days ago
Reactvalkey-io/valkey-admin	148	—	~766	Automated safety check: Pass	Apache-2.0	today
React ExpertJeffallan/claude-skills	12k	—	~1.4k	Automated safety check: Pass	MIT	7 days ago
Web Artifacts Builderanthropics/skills	180k	40 repos	~769	Automated safety check: Pass	Apache-2.0	today
Tailwindcss Developmentanonaddy/anonaddy	4.9k	10 repos	~865	Automated safety check: Pass	MIT	4 days ago

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Questions about Mvvm Architecture

What does Mvvm Architecture do?

Plan, review, and develop desktop and mobile app features following our MVVM architectural pattern. Mvvm Architecture is an agent skill from LedgerHQ/ledger-live. Plan, review, and develop desktop and mobile app features following our MVVM architectural pattern.

When should I use Mvvm Architecture?

Mvvm Architecture fits situations like: tasks that involve React components.

How do I install Mvvm Architecture in Claude Code?

Run `npx skills add LedgerHQ/ledger-live --skill mvvm-architecture -a claude-code`. Or copy the skill folder (.agents/skills/mvvm-architecture in LedgerHQ/ledger-live) into .claude/skills/mvvm-architecture in your project. Claude Code loads it when a task matches its description.

How do I install Mvvm Architecture in Codex?

Run `npx skills add LedgerHQ/ledger-live --skill mvvm-architecture -a codex`. Or copy the skill folder (.agents/skills/mvvm-architecture in LedgerHQ/ledger-live) into .agents/skills/mvvm-architecture in your project. Codex loads it when a task matches its description.

Can I use Mvvm Architecture 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 LedgerHQ/ledger-live --skill mvvm-architecture -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/mvvm-architecture, .gemini/skills/mvvm-architecture, .github/skills/mvvm-architecture and .opencode/skills/mvvm-architecture in your project.

What does Mvvm Architecture need to run?

SKILL.md names no scripts, command-line tools or credentials: Mvvm Architecture is instructions for the agent only.

Does Mvvm Architecture 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 Mvvm Architecture 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 Mvvm Architecture use?

Mvvm Architecture is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Mvvm Architecture use?

About 902 tokens (SKILL.md is roughly 3.6k 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 Mvvm Architecture?

Skills that share tags, products or a category with Mvvm Architecture: Frontend (redis/RedisInsight, 8.9k stars), React (valkey-io/valkey-admin, 148 stars), React Expert (Jeffallan/claude-skills, 12k stars) and Web Artifacts Builder (anthropics/skills, 180k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Mvvm Architecture?

LedgerHQ (a GitHub organization) maintains it in LedgerHQ/ledger-live, which has 622 GitHub stars. The repository holds 51 skills in this directory. The repository was last updated on October 10, 2026.

Source: LedgerHQ/ledger-live on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Mvvm Architecture

Facts

At a glance

What it does

When your agent uses it

Example prompts

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

MVVM Architecture

The new standard for desktop and mobile apps

Folder Structure

Feature Folder Responsibilities

Nesting Guidelines

Component & File Patterns

ViewModel Pattern

Violation checklist — flag if any index.tsx View under screens/ or components/ within src/mvvm/:

Import Rules

Data Fetching

Design System

Testing

Files

Compare with similar skills

Similar skills

More from LedgerHQ/ledger-live

Related

Questions about Mvvm Architecture

Violation checklist — flag if any `index.tsx` View under `screens/` or `components/` within `src/mvvm/`: