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Agent skill

Compose Multiplatform

by AThevon in AThevon/genjutsu

Compose Multiplatform / KMP patterns - expect/actual composables, platform-specific code, density and font handling cross-target, iOS/Android/Desktop interop.

Custom licenceAuto-check passedMobile

Install Compose Multiplatform

skills CLI
$ npx skills add AThevon/genjutsu --skill compose-multiplatform -a claude-code

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

GitHub CLI
$ gh skill install AThevon/genjutsu compose-multiplatform --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/AThevon/genjutsu.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/_jutsu/compose-multiplatform .claude/skills/compose-multiplatform && 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/

Facts

Skill name
compose-multiplatform
GitHub stars
416
Used in
1 other repo
Token cost
~4.1k tokens
SKILL.md length
1,434 words
Files
3 (incl. references)
Skills in repo
20
Repo updated
First seen
Licence
Custom licence

At a glance

Compose Multiplatform / KMP patterns - expect/actual composables, platform-specific code, density and font handling cross-target, iOS/Android/Desktop interop.

  • Mobile work in your project
  • SKILL.md covers KMP vs CMP - quick clarification, Project structure, expect/actual pattern and expect/actual for composables, plus 13 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Compose Multiplatform is an agent skill from AThevon/genjutsu. Compose Multiplatform / KMP patterns - expect/actual composables, platform-specific code, density and font handling cross-target, iOS/Android/Desktop interop.

Its SKILL.md is about 4.1k tokens, which your agent loads only when the skill is triggered. The skill folder holds 3 other files, including reference files (for example `references/cmp-interop.md` and `references/cmp-platform-quirks.md`).

It sits in Mobile. It works with Jetpack Compose, iOS and Android. The repository describes itself as: Creative coding skills for Claude Code, claude.ai and Cowork. Motion, micro-interactions and design systems across Web (GSAP, Motion, Three.js, CSS), Android (Jetpack Compose)…

When your agent uses it

  • Mobile work in your project

Example prompts

  • “/compose-multiplatform”

What it can do on your machine

Read from SKILL.md and the folder at commit 1f518a7. 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 kotlin and swift).

    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):

    • github.com
    • jetbrains.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

Compose Multiplatform loads about 4.1k tokens when it runs, and up to ~9.1k if it reads all its reference files. Until then it costs about 45 tokens; SKILL.md has 1,434 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~45
When it runs · the whole SKILL.md, loaded when a task matches
~4.1k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~9.1k

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 1,434 words (~4,147 tokens).

“KMP (Kotlin Multiplatform) is the language and build infrastructure: shared Kotlin code compiled to JVM, Native (iOS, macOS, Linux, Windows), and Wasm. CMP (Compose Multiplatform) is the UI framework on top of KMP, built by JetBrains as a port of…”

— opening of SKILL.md by AThevon, Custom licence
name
compose-multiplatform
metadata.internal
true

Read the full SKILL.md on GitHub

Files

SKILL.md and 2 other files (references) in skills/_jutsu/compose-multiplatform of AThevon/genjutsu.

  • SKILL.md
  • references/cmp-interop.md
  • references/cmp-platform-quirks.md

Open the folder on GitHubat commit 1f518a7

Used in 1 other repository

We found 1 copy of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in AThevon/genjutsu, which our catalogue first saw on October 7, 2026.

Compare with similar skills

Compose Multiplatform 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.

Compose Multiplatform compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Compose Multiplatform this skillAThevon/genjutsu4161 repos~4.1kAutomated safety check: PassCustom licence
Jetpack Composedarriousliu/PiPixiv262—~1.5kAutomated safety check: PassApache-2.0
Expo UIarcboxlabs/linkcode155—~1.2kAutomated safety check: PassMIT
Ksafeioannisa/KSafe332—~17kAutomated safety check: PassApache-2.0
KtormonitorCosminMihuMDC/KtorMonitor254—~2.5kAutomated safety check: PassApache-2.0
SimdeckNativeScript/SimDeck152—~3.6kAutomated safety check: PassMIT

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  • Jetpack Compose

    darriousliu/PiPixiv

    Jetpack Compose expert skill for Android UI development. An agent skill from darriousliu/PiPixiv.

    262 GitHub stars~1.5k tokensUpdated today
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  • Ktormonitor

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More from AThevon/genjutsu

All 20 skills in this repo

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  • Design Audit

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  • UI UX Pro Max

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  • Canvas Generative

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  • Compose Motion

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Works with

Categories

Questions about Compose Multiplatform

What does Compose Multiplatform do?

Compose Multiplatform / KMP patterns - expect/actual composables, platform-specific code, density and font handling cross-target, iOS/Android/Desktop interop. Compose Multiplatform is an agent skill from AThevon/genjutsu. Compose Multiplatform / KMP patterns - expect/actual composables, platform-specific code, density and font handling cross-target, iOS/Android/Desktop interop.

When should I use Compose Multiplatform?

Compose Multiplatform fits situations like: mobile work in your project.

How do I install Compose Multiplatform in Claude Code?

Run `npx skills add AThevon/genjutsu --skill compose-multiplatform -a claude-code`. Or copy the skill folder (skills/_jutsu/compose-multiplatform in AThevon/genjutsu) into .claude/skills/compose-multiplatform in your project. Claude Code loads it when a task matches its description.

How do I install Compose Multiplatform in Codex?

Run `npx skills add AThevon/genjutsu --skill compose-multiplatform -a codex`. Or copy the skill folder (skills/_jutsu/compose-multiplatform in AThevon/genjutsu) into .agents/skills/compose-multiplatform in your project. Codex loads it when a task matches its description.

Can I use Compose Multiplatform 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 AThevon/genjutsu --skill compose-multiplatform -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/compose-multiplatform, .gemini/skills/compose-multiplatform, .github/skills/compose-multiplatform and .opencode/skills/compose-multiplatform in your project.

What does Compose Multiplatform need to run?

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

Does Compose Multiplatform access the network?

SKILL.md names 2 domains. As links in the text: github.com and jetbrains.com. This is read from the text; nothing was executed.

Is Compose Multiplatform 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 Compose Multiplatform use?

Compose Multiplatform 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 Compose Multiplatform use?

About 4.1k tokens (SKILL.md is roughly 17k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 5k tokens, read only when the agent opens those files.

What are the alternatives to Compose Multiplatform?

Skills that share tags, products or a category with Compose Multiplatform: Jetpack Compose (darriousliu/PiPixiv, 262 stars), Expo UI (arcboxlabs/linkcode, 155 stars), Ksafe (ioannisa/KSafe, 332 stars) and Ktormonitor (CosminMihuMDC/KtorMonitor, 254 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Compose Multiplatform?

AThevon (a GitHub user) maintains it in AThevon/genjutsu, which has 416 GitHub stars. The repository holds 20 skills in this directory. The repository was last updated on October 5, 2026.

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