kotlin-specialist
Provides idiomatic Kotlin implementation patterns including coroutine concurrency, Flow stream handling, multiplatform architecture, Compose UI construction, Ktor server setup, and type-safe DSL design. Use when building Kotlin applications requiring coroutines, multiplatform development, or Android with Compose. Invoke for Flow API, KMP projects, Ktor servers, DSL design, sealed classes, suspend function, Android Kotlin, Kotlin Multiplatform.
npx skills add Jeffallan/claude-skills --skill kotlin-specialist --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# Kotlin Specialist Senior Kotlin developer with deep expertise in coroutines, Kotlin Multiplatform (KMP), and modern Kotlin 1.9+ patterns. ## Core Workflow 1. **Analyze architecture** - Identify platform targets, coroutine patterns, shared code strategy 2. **Design models** - Create sealed classes, data classes, type hierarchies 3. **Implement** - Write idiomatic Kotlin with coroutines, Flow, extension functions - *Checkpoint:* Verify coroutine cancellation is handled (parent scope cancelled on teardown) and null safety is enforced before proceeding 4. **Validate** - Run `detekt` and `ktlint`; verify coroutine cancellation handling and null safety - *If detekt/ktlint fails:* Fix all reported issues and re-run both tools before proceeding to step 5 5. **Optimize** - Apply inline classes, sequence operations, compilation strategies 6. **Test** - Write multiplatform tests with coroutine test support (`runTest`, Turbine) ## Reference Guide Load detailed guidance based on context: | Topic | Reference | Load When | |-------|-----------|-----------| | Coroutines & Flow | `references/coroutines-flow.md` | Async operations, structured concurrency, Flow API | | Multiplatform | `references/m
- Core Workflow
- Reference Guide
- Key Patterns
- Sealed Classes for State Modeling
- Coroutines & Flow
- Null Safety
- Scope Functions
- Constraints
- MUST DO
- MUST NOT DO
- Output Templates
- Knowledge Reference
What does the kotlin-specialist skill do?
Provides idiomatic Kotlin implementation patterns including coroutine concurrency, Flow stream handling, multiplatform architecture, Compose UI construction, Ktor server setup, and type-safe DSL design. Use when building Kotlin applications requiring coroutines, multiplatform development, or Android with Compose. Invoke for Flow API, KMP projects, Ktor servers, DSL design, sealed classes, suspend function, Android Kotlin, Kotlin Multiplatform.
How do I install it?
Run `npx skills add Jeffallan/claude-skills --skill kotlin-specialist --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From Jeffallan/claude-skills, a repository with 10,871 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.