Kotlin · For developers

Bootstrap pitest via the info.solidsoft.pitest Gradle plugin with Kotlin-sane defaults, run mutation tests scoped to changed classes, interpret surviving mutants from mutations.xml, triage…

jvm-skills/jvm-skills

Add a new downloadable JSON schema to the Resources page — Kotlin provider class only, auto-discovered by Spring.

yontrack/yontrack

Automatically use for Levyra R8, Proguard, minification, resource shrinking, keep rules, consumer rules, release-only crashes, reflection/serialization/JNI shrinking issues, APK size, mapping files…

LUC4N3X/Levyra-deepsound

Capture the before/after rendered PNGs a UI-affecting PR in this repository needs as visual evidence, including bringing an Android SDK up in a fresh sandbox.

yschimke/compose-ai-tools

Manages MkDocs documentation site and API references for ComposeWebView.

parkwoocheol/compose-webview

Adds a new parameter resolution strategy to the ktnip KSP processor.

vendelieu/telegram-bot

Design, implement, and review Kotlin and Android APIs. An agent skill from margelo/react-native-skills.

margelo/react-native-skills

Software Mansion's moq-kit — native Swift (iOS) and Kotlin (Android) SDKs for Media over QUIC (moq-lite) live streaming: sub-second-latency playback, camera/microphone/screen publishing, and…

software-mansion-labs/skills

Helps choose how common Kotlin Multiplatform code reaches platform APIs: expect/actual, a common interface with platform bindings, or separate platform screens.

rcosteira79/android-skills

Official skill for the XcodeBuildMCP CLI. An agent skill from c5inco/compose-pokedexer.

c5inco/compose-pokedexer

Audit open dependabot PRs in this repo. An agent skill from garfiec/Librechat-Mobile.

garfiec/Librechat-Mobile

Use this skill after every working session where Kotlin or Android code was created or modified, and ALWAYS before committing, opening a PR, or reporting work as done.

GerardPaligot/Confily

Remote API traps in Kotlin Multiplatform: Ktor clients, defensive parsing, Resource envelopes, OK responses that dropped your data, auth callbacks, retry backoff, downloads, websockets, clock sync.

maxrave-dev/kotlin-footguns

A skill your agent uses when reviewing the Harmonica restart plan against reality — after a phase PR or milestone merges, before proposing the next phase, or when asked "are the specs up to date" /…

KenjiOhtsuka/harmonica

Guides formal verification of algorithms, data structures, and properties in the ComposeLife project using Lean 4 and Mathlib.

alexvanyo/composelife

Adds voice and video calling to an Android app in Kotlin with the headless CometChat Calls SDK v5, covering meeting-style rooms, 1:1 ringing calls, call logs and recording.

cometchat/cometchat-skills

Add a complete Yontrack property type — Kotlin PropertyType class, GraphQL mutation provider, and all required frontend UI components (Icon, Display, Form, FormPrepare).

yontrack/yontrack

Migrate Kotlin (and Java) code from kotlinx.collections.immutable 0.3.x / 0.4.x to the latest 0.5.x.

Kotlin/kotlin-agent-skills

Adds a new Telegram Bot API method (action class and top-level functions).

vendelieu/telegram-bot

Kuikly Compose DSL 框架开发助手。帮助使用 Kuikly Compose DSL 语法进行跨平台 UI 开发，提供 Compose 组件、Modifier、动画、手势、状态管理、导航、ViewModel 等 API 的正确使用方法和完整代码示例。适用场景：Kuikly Compose 页面开发、Compose 组件使用、Compose 布局实现、Compose…

Tencent-TDS/KuiklyUI-AI

江湖门派助手 — 创建和管理你的武侠势力。当用户提到"门派"、"江湖"、"势力"、"帮派"、"创建门派"时自动激活. An agent skill from MiaoWuNYA/rikkahub-sillytavern-android.

MiaoWuNYA/rikkahub-sillytavern-android

Use Gradle Compose tasks to prepare and recover local Elasticsearch/OpenSearch test infrastructure in kt-search.

jillesvangurp/kt-search

Convert a HuggingFace ASR fine-tune into a sherpa-onnx external model, publish it, and add it to the Anti-Vocale community catalog.

RisorseArtificiali/anti-vocale

在不创建、激活或切换任何前台窗口的前提下，通过项目的 debug-only 离屏 Compose UI 控制接口检查语义树、点击、输入、滚动、等待和截图。适用于 macOS Kotlin/Native UI 回归、页面卡死、导航完成度和逐按钮验收；禁止用 AppleScript、System Events、open、桌面截图或坐标点击替代。

zly2006/zhihu-plus-plus

Update the third-party JavaScript vendored into the app for the artifact, diagram, and math WebViews (KaTeX, mermaid, marked, highlight.js, Tailwind, Babel, React).

garfiec/Librechat-Mobile

Reactive state and background-work traps: StateFlow conflation, flatMapLatest, job lifecycles, ViewModel bases, WorkManager, backups, crash reporting, logging, Glance widgets.

maxrave-dev/kotlin-footguns

Guide for creating and writing Expo native modules and views using the Expo Modules API (Swift, Kotlin, TypeScript).

expo/skills

Guide for creating new Android gradle modules in the android-components project.

SAP/project-foxhound

Creates and manages isolated Git worktrees with safe directory selection, explicit approval, clean-baseline verification, and Gradle-specific safeguards.

c5inco/compose-pokedexer

Identifies and implements micro-level Kotlin, Jetpack Compose, Coroutine, and Room database performance optimizations.

nekomangaorg/Neko

A skill your agent uses when bundling a new plain Java/Kotlin plugin into MPS distribution archives, debugging packaging/layout issues in build/mps.xml, tracing where per-plugin artefacts end up, or…

JetBrains/MPS

Builds chat on Android with your own UI against the headless CometChat Chat SDK v5, covering install, Jetifier conflicts, credentials and init-before-login ordering.

cometchat/cometchat-skills

A skill your agent uses when editing, building, previewing, or deploying the prometheus-proxy documentation site under website/prometheus-proxy — covers the Zensical config, code-snippet resolution…

pambrose/prometheus-proxy

Adds a new compiler option to Metro.

ZacSweers/metro

Scaffold a new Yontrack dashboard widget end-to-end — Kotlin AbstractWidget class with config data class, and two frontend components (display + form).

yontrack/yontrack

Writes tests for Telegram Bot API actions. An agent skill from vendelieu/telegram-bot.

vendelieu/telegram-bot

Home Assistant Android change finalization. An agent skill from home-assistant/android.

home-assistant/android

Sets out the repository pattern's error-propagation model for Android and Kotlin Multiplatform, plus the Room setup for commonMain.

rcosteira79/android-skills

Drive a pull request on this repository to green — which fast checks to run before pushing, how to read a red check, and what to do about a review comment.

yschimke/compose-ai-tools

Creates RPC-style endpoint following layered architecture (Controller → Manager → Repository).

c0x12c/ai-toolkit

Load when porting, converting, or reimplementing a single Gradle plugin as a Kotlin Toolchain local plugin, or when mapping Gradle plugin concepts (Task, Extension, project.version, dependsOn, -P…

Kotlin/kotlin-agent-skills

Owns repositories, data sources and mapping for Compose and Compose Multiplatform apps: DTO to domain to UiModel boundaries, Ktor clients and bearer auth, WebSocket and SSE, Room, DataStore, Paging…

Meet-Miyani/compose-skill

A skill your agent uses when creating a new core or shared library module for domain logic, data access, repositories, managers, or utilities.

MartinStyk/apk-analyzer

USE THIS when writing or reviewing Jetpack Compose / Kotlin code in packages/cds-android or apps/android-app - @Composable APIs, Modifier parameters, CompositionLocal, state hoisting, or naming.

coinbase/cds

A skill your agent uses when writing or reviewing Kotlin branching and control flow: when expressions, guard conditions, sealed type exhaustiveness, smart casts, nullable branching, early returns…

chrisbanes/skills

Adds a new field to the Update type and wires it through ProcessedUpdate, UpdateType, ProcessUpdate, KSP (TypeConstants, TypeMapper), and FunctionalDSLUtils.

vendelieu/telegram-bot

Applies Clean Architecture to Android and Kotlin Multiplatform projects: module layout, dependency rules, UseCases, Repositories and data layer patterns.

affaan-m/ECC

Kotlin Coroutines and Flow patterns for Android and KMP — structured concurrency, Flow operators, StateFlow, error handling, and testing.

affaan-m/ECC