AppBootstrapAI: Skill for Claude Code

.claude/skills/android-adaptive-layout-pro/SKILL.md

android-adaptive-layout-pro is a skill for Claude Code from kelvinkosbab/AppBootstrapAI. It costs 112 tokens per session (1,149 once invoked), scanned A, original, MIT.

An Android code reviewer for apps that need to work well on tablets, foldable phones, and resizable desktop-style windows. It checks Jetpack Compose screens and related app configuration.

In plain words
What is it for?
Use it to review or fix Compose screens, foldable behavior, multi-window support, keyboard and mouse input, and Android manifest settings. It also checks whether tests cover the main window sizes.
Why use it?
It helps find layouts that break at different window sizes or when a device folds, unfolds, or changes display. It also catches lost screen state, input problems, and settings that restrict large-screen use.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

This is kelvinkosbab/AppBootstrapAI's own configuration. It tells Claude Code how to work on AppBootstrapAI itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything AppBootstrapAI configures →

Reuse

Borrowing it

Nothing to install: this file belongs to kelvinkosbab/AppBootstrapAI. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/kelvinkosbab/AppBootstrapAI/main/.claude/skills/android-adaptive-layout-pro/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/kelvinkosbab/AppBootstrapAI

Made for: Claude Code.

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.

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README.md
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Your own site
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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.

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Your own site · 80×15
<a href="https://agentmods.dev/skills/kelvinkosbab/appbootstrapai/android-adaptive-layout-pro"><img src="https://agentmods.dev/badge/skills/kelvinkosbab/appbootstrapai/android-adaptive-layout-pro.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 112 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,149 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.
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 $0.00112 $0.01149
Opus 5 $0.00056 $0.00575
Sonnet 5 $0.00022 $0.00230
Haiku 4.5 $0.00011 $0.00115

Measured 9d ago against content hash 20ed8e21a778, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

android-adaptive-layout-pro 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 9d 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.

.claude/skills/android-adaptive-layout-pro/SKILL.md · 66 lines

How it starts

The opening of the file, as written. The whole thing — 66 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Review Android code for large-screen and foldable readiness. This is the deep-review companion to the always-on android-large-screen-best-practices.md rule — the rule steers while writing; this skill audits whole screens and the manifest. Report only genuine problems; don't nitpick.

Applies to Jetpack Compose apps (with View-interop notes). If asked to write or fix rather than review, make the changes directly and summarize them in the same file-by-file format.

Review process:

  1. Audit how layouts branch using references/size-classes.md — window size class reads, breakpoint API, canonical layouts vs hand-rolled conditionals, content width, navigation components per class.
  2. Audit foldable behavior using references/foldables.md — posture handling, FoldingFeature observation, state survival across fold/unfold and display switches.
  3. Audit configuration, input, and testing using references/quality-checklist.md — manifest restrictions (Android 16), multi-window assumptions, camera orientation, keyboard/mouse/stylus/drag-and-drop, Play quality-tier readiness, test coverage per size class.

If doing a partial review, load only the relevant reference files.

Core Instructions

  • The unit of adaptation is the window, not the device. Any device-type heuristic (isTablet, smallestScreenWidthDp) is a finding regardless of how well it happens to work today — foldables and multi-window break it.
  • Assume Android 16 behavior. Orientation/aspect-ratio/resizability restrictions are ignored on ≥ 600dp screens for targetSdk 36+; a locked portrait layout is a bug waiting to ship, not a deliberate constraint. Flag the restriction AND the layout that depended on it.
  • Fold/unfold and resize are configuration changes. Trace what happens to user input, scroll position, selection, and in-flight work — state in plain remember or Activity fields is a finding.
  • Prefer the scaffolds. Hand-rolled if (expanded) Row else Column trees aren't wrong, but when a Material 3 adaptive scaffold fits (navigation suite, list-detail, supporting pane), recommend it — it handles runtime resizes and back navigation the custom code usually forgets.
  • Severity by user impact: broken (stretched/unusable layout, state loss on fold, camera preview wrong) > degraded (phone layout made wider, bottom bar on a 13" screen, no hover/keyboard support) > polish (missing large/extra-large tuning).
  • Cross-reference, don't duplicate: keyboard focus and a11y semantics belong to android-accessibility-pro; recomposition cost to android-compose-pro.

Read the full file on GitHub · 66 lines

Files

What ships with it

3 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. 9d ago First seen · 66 lines · 112 tokens per session scan A 20ed8e21a778

Subscribe to this mod's changes

android-adaptive-layout-pro is a skill published in the GitHub repository kelvinkosbab/AppBootstrapAI (5 stars, last pushed 18d ago), licensed MIT. It adds 112 tokens to every session and 1,149 once invoked, about $0.0006 per session on Opus 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 2026-08-31.

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