compose-multiplatform

compose-multiplatform is a skill for Claude Code from AThevon/genjutsu. It costs 40 tokens per session (3,979 once invoked), scanned A, original, no licence file.

A set of patterns for building one Compose user interface that runs on Android, iOS, desktop computers, and the web. It explains how to share code while adding platform-specific parts where needed.

In plain words
What is it for?
Use it when building cross-platform apps with Compose Multiplatform or Kotlin Multiplatform, including platform-specific code, text sizing, fonts, and iOS or Android integration.
Why use it?
It reduces the need to maintain separate user interfaces for each platform and clarifies how shared and platform-specific Kotlin code fit together.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the genjutsu plugin — 20 skills shipped together

Good fit Use it when building cross-platform apps with Compose Multiplatform or Kotlin Multiplatform, including platform-specific code, text sizing, fonts, and iOS or Android integration.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/athevon/genjutsu/compose-multiplatform
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add AThevon/genjutsu --skill compose-multiplatform
Clone the repo
git clone --depth 1 https://github.com/AThevon/genjutsu

Made for: Claude Code.

Or install genjutsu, the plugin that ships this one along with the rest of its 20 skills.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for compose-multiplatform

README.md
[![agentmods](https://agentmods.dev/badge/skills/athevon/genjutsu/compose-multiplatform/github.svg)](https://agentmods.dev/skills/athevon/genjutsu/compose-multiplatform)
Your own site
<a href="https://agentmods.dev/skills/athevon/genjutsu/compose-multiplatform"><img src="https://agentmods.dev/badge/skills/athevon/genjutsu/compose-multiplatform/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for compose-multiplatform

Your own site · 80×15
<a href="https://agentmods.dev/skills/athevon/genjutsu/compose-multiplatform"><img src="https://agentmods.dev/badge/skills/athevon/genjutsu/compose-multiplatform.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 40 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,979 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • Socket pass 9 Sept 2026
  • Snyk pass 9 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00040 $0.03979
Opus 5.5 $0.00016 $0.01592
Sonnet 5.5 $0.00008 $0.00796
Haiku 4.5 $0.00004 $0.00398

Measured 19d ago against content hash c33bb7297a12, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

compose-multiplatform scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 19d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

skills/_jutsu/compose-multiplatform/SKILL.md · 337 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 19d ago Changed · +2 lines c33bb7297a12
  2. 1mo ago Changed · +23 lines b1222c2f64f5
  3. 1mo ago First seen · 312 lines · 40 tokens per session scan A 0df67d53bfa6

Subscribe to this mod's changes

compose-multiplatform is a skill published in the GitHub repository AThevon/genjutsu (528 stars, last pushed 12d ago), with no licence file. It adds 40 tokens to every session and 3,979 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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