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Kotlin 2.0+ development specialist covering Ktor, coroutines, Compose Multiplatform, and Kotlin-idiomatic patterns. Use when building Kotlin server apps, Android apps, or multiplatform projects.
默认使用会先检查来源的 Prompt；你也可以切换为直接命令，或下载本地副本。
决定是否安装前，请先阅读 SKILL.md，以及 SkillsMP 当前展示的配套文件。
用 Codex 或 Claude 帮你安装 复制这段 Prompt，粘贴到 Codex、Claude 或其他助手里，让它检查 Skill 页面并帮你完成安装。
直接命令不会经过审查 Prompt；运行前请先检查来源。
npx skills add https://github.com/modu-ai/cc-plugins --skill moai-lang-kotlin命令会保持在同一行。复制前请横向滚动并检查完整内容。
想先保存到本地？可下载 SkillsMP 当前能够提供的文件。
Design tool integration specialist covering Figma MCP, Pencil renderer, and Pencil-to-code export. Use when fetching design context from Figma, rendering Pencil DNA codes to .pen frames, exporting .pen designs to React/Tailwind code, or choosing design-to-code workflows. Supports design fetching (Figma), visual rendering (Pencil MCP), and code generation (React/Tailwind).
Documentation generation patterns for technical specs, API docs, user guides, and knowledge bases using real tools like Sphinx, MkDocs, TypeDoc, and Nextra. Use when creating docs from code, building doc sites, or automating documentation workflows.
Backend development specialist covering API design, database integration, microservices architecture, and modern backend patterns. Use when user asks about API design, REST or GraphQL endpoints, server implementation, authentication, authorization, middleware, or backend service architecture. Do NOT use for database-specific schema design or query optimization (use moai-domain-database instead) or frontend implementation (use moai-domain-frontend instead).
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基于 SOC 职业分类
| name | moai-lang-kotlin |
| description | Kotlin 2.0+ development specialist covering Ktor, coroutines, Compose Multiplatform, and Kotlin-idiomatic patterns. Use when building Kotlin server apps, Android apps, or multiplatform projects. |
| license | Apache-2.0 |
| compatibility | Designed for Claude Code |
| user-invocable | false |
| metadata | {"version":"1.1.0","category":"language","status":"active","updated":"2026-01-11","modularized":"false","tags":"kotlin, ktor, coroutines, compose, android, multiplatform","context7-libraries":"/ktorio/ktor, /jetbrains/compose-multiplatform, /jetbrains/exposed","related-skills":"moai-lang-java, moai-lang-swift"} |
| progressive_disclosure | {"enabled":true,"level1_tokens":100,"level2_tokens":5000} |
| triggers | {"keywords":["Kotlin","Ktor","coroutine","Flow","Compose","Android",".kt",".kts","build.gradle.kts"],"languages":["kotlin"]} |
Kotlin 2.0+ Expert - K2 compiler, coroutines, Ktor, Compose Multiplatform with Context7 integration.
Auto-Triggers: Kotlin files (.kt, .kts), Gradle Kotlin DSL (build.gradle.kts, settings.gradle.kts)
Core Capabilities:
Coroutines and Flow: Use coroutineScope with async for parallel operations. Create deferred values with async, then call await on each to get results. Combine results into data classes. For reactive streams, create flow blocks with emit calls inside while loops. Use delay for intervals and flowOn to specify dispatcher.
Sealed Classes and Value Classes: Define sealed interface with generic type parameter. Create data class implementations for success and data object for stateless cases like Loading. Use @JvmInline annotation with value class wrapping a primitive. Add init blocks with require for validation.
Application Setup: Call embeddedServer with Netty, port, and host parameters. Inside the lambda, call configuration functions for Koin, security, routing, and content negotiation. Call start with wait equals true.
For Koin configuration, install Koin plugin and define modules with single declarations for singletons. For security, install Authentication plugin and configure JWT with realm, verifier, and validate callback. For content negotiation, install ContentNegotiation with json configuration.
Routing with Authentication: Define routing function on Application. Inside routing block, use route for path prefixes. Create unauthenticated endpoints with post and call.receive for request body. Use authenticate block with verifier name for protected routes. Inside route blocks, define get endpoints with call.parameters for path/query params. Use call.respond with status code and response body.
Table and Entity: Define object extending LongIdTable with table name. Declare columns with varchar, enumerationByName, and timestamp functions. Use uniqueIndex() and defaultExpression for defaults.
Create entity class extending LongEntity with companion object extending LongEntityClass. Declare properties with by syntax using table column references. Create toModel function to map entity to domain model.
Repository with Coroutines: Create repository implementation taking Database parameter. Implement suspend functions wrapping Exposed operations in dbQuery helper. Use findById for single entity lookup. Use Entity.new for inserts. Define private dbQuery function using newSuspendedTransaction with IO dispatcher.
WebFlux Controller: Annotate class with @RestController and @RequestMapping. Create suspend functions for endpoints with @GetMapping and @PostMapping. Return Flow for collections using map to convert entities. Return ResponseEntity with status codes. Use @Valid for request validation.
Shared UI Component: Create @Composable function taking ViewModel and callback parameters. Collect uiState as state with collectAsState. Use when expression on sealed state to show different composables for Loading, Success, and Error.
For list items, create Card composables with Modifier.fillMaxWidth and clickable. Use Row with padding, AsyncImage for avatars with CircleShape clip, and Column for text content with MaterialTheme.typography.
Create test class with mockk for dependencies. Initialize service with mock in declaration. Use @Test with runTest for coroutine tests. Use coEvery with coAnswers for async mocking with delay. Use assertThat for assertions. For Flow testing, use toList to collect emissions and assert on size and content.
Use plugins block with kotlin("jvm") and kotlin("plugin.serialization") with version strings. Add id for ktor.plugin. Configure kotlin block with jvmToolchain. In dependencies block, add ktor server modules, kotlinx coroutines, exposed modules, and postgresql driver. Add test dependencies for mockk, coroutines-test, and turbine.
Library mappings for latest documentation:
/ktorio/ktor - Ktor 3.0 server/client documentation/jetbrains/exposed - Exposed SQL framework/JetBrains/kotlin - Kotlin 2.0 language reference/Kotlin/kotlinx.coroutines - Coroutines library/jetbrains/compose-multiplatform - Compose Multiplatform/arrow-kt/arrow - Arrow functional programmingUsage: Call mcp__context7__get_library_docs with context7CompatibleLibraryID, topic string for specific areas, and tokens parameter for response size.
Use Kotlin When:
Consider Alternatives When:
moai-lang-java - Java interoperability and Spring Boot patternsmoai-domain-backend - REST API, GraphQL, microservices architecturemoai-domain-database - JPA, Exposed, R2DBC patternsmoai-quality-testing - JUnit 5, MockK, TestContainers integrationmoai-infra-docker - JVM container optimizationK2 Compiler: Add kotlin.experimental.tryK2=true to gradle.properties. Clear .gradle directory for full rebuild.
Coroutines: Avoid runBlocking in suspend contexts. Use Dispatchers.IO for blocking operations.
Ktor: Ensure ContentNegotiation is installed. Check JWT verifier configuration. Verify routing hierarchy.
Exposed: Ensure all DB operations run within transaction context. Be aware of lazy entity loading outside transactions.
For comprehensive reference materials:
Last Updated: 2026-01-11 Status: Production Ready (v1.1.0)