A set of coding rules for Kotlin applications built with Jetpack Compose, Android's toolkit for creating user interfaces in Kotlin. It covers naming, formatting, comments, and rules for reusable interface functions.

Use it when writing or reviewing Kotlin and Jetpack Compose code, especially interface components, previews, state handling, and project structure.

It gives contributors one shared standard, which makes code easier to read and reduces inconsistent patterns across the project.

code-style — Cursor rule by HeeGyeong

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.

agentmods

npx agentmods add rules/heegyeong/composesample/code-style

Clone the repo

git clone --depth 1 https://github.com/HeeGyeong/ComposeSample

Made for: Cursor.

Per session 0 Nothing until a file matches its globs; then the whole rule loads.

When invoked 415 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. Scan, not verified.

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.

Model	Per session	Once invoked
Fable 5	$0.00000	$0.00415
Opus 5	$0.00000	$0.00208
Sonnet 5	$0.00000	$0.00083
Haiku 4.5	$0.00000	$0.00042

Measured yesterday against content hash 93b008793246, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

code-style 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 yesterday.

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.

.cursor/rules/code-style.mdc · 69 lines

What it actually says

description: "Kotlin & Jetpack Compose Code Style Guide with Korean comments" globs: "" alwaysApply: true

Kotlin & Jetpack Compose Code Style Guide

Overview

This rule defines comprehensive code style guidelines for Kotlin and Jetpack Compose development. References CreateUICodeSnippet.md.

Technical Specifications

Language: Kotlin
Framework: Jetpack Compose
Architecture: MVVM + Clean Architecture
Comments: Write in Korean
File Coverage: Write all parts without omission

Naming Conventions

Classes: PascalCase
Functions: camelCase
Variables: camelCase
Constants: SCREAMING_SNAKE_CASE
Composable Functions: PascalCase

Composable Function Rules

Must include Preview functions
Parameters must have explicit default values
Apply state hoisting
Reusable components should be in separate files

Code Formatting

Indentation: 4 spaces
Maximum line length: 120 characters
Maximum function length: 50 lines
Maximum file length: 500 lines

Comment Rules

Comments only for complex business logic
Use KDoc format
TODO comments must include resolution deadline

Code Style Examples

Color and Style Usage

Text(
    modifier = Modifier,
    text = title,
    color = Color.LightGray,
    style = getTextStyle(12)
)

ViewModel Usage

Reference DIRules.md
Use Koin as DI framework

Implementation Guidelines

Implement UI that matches provided designs/requirements
Maintain build integrity using dummy data
Express full context of requirements
Base implementation on comprehensive understanding

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.

yesterday First seen · 69 lines · 0 tokens per session scan A 93b008793246

Subscribe to this mod's changes

code-style is a cursor rule published in the GitHub repository HeeGyeong/ComposeSample (11 stars, last pushed 2d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 415 tokens. 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.

Mobile Writing and docs

code-style