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mobile-kmp

Works on Kotlin Multiplatform mobile projects with shared Kotlin source sets and Android/iOS targets. Use for architecture, tests, debugging, reviews, performance, security, accessibility, dependencies and releases when `org.jetbrains.kotlin.multiplatform` is applied; inspect actual targets, `commonMain`/`commonTest`, target source sets, Compose Multiplatform and the iOS framework/host app before giving platform advice.

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Files included (5)

  • SKILL.md2.5 KB
  • references/apple-interop.md1.1 KB
  • references/build-performance.md1.2 KB
  • references/compose-ui.md1.1 KB
  • references/source-sets.md1.3 KB

SKILL.md (original)

Review the instructions the agent will receive before you install.

Kotlin Multiplatform

KMP is a sharing mechanism, not a promise that both apps use the same UI or SDK. Resolve the module and target graph before choosing Android, iOS or shared-code guidance.

QuestionRead
Which code and dependencies can be shared?references/source-sets.md
How does shared Kotlin reach the iOS app?references/apple-interop.md
Is UI shared with Compose Multiplatform or native on each target?references/compose-ui.md
Which build, measurement or release task applies?references/build-performance.md

Ground the answer

  1. Read settings.gradle.kts, the affected module's build.gradle.kts, version catalog and source-set directories. Record the configured targets; androidMain and iosMain are not proof that a target is built in CI.
  2. Trace a real symbol from commonMain through an interface or expect declaration to each configured implementation and its Android/iOS caller. Name the module, source set and owner at every boundary. For shared Compose UI, trace its host entry too.
  3. Match validation to the changed boundary: shared Kotlin tests on configured targets, target tests for actual implementations, and host UI/device tests for behavior that crosses into Android or iOS. A JVM test is not iOS coverage.
  4. Use the topic skill for the requested work. Use mobile-android or mobile-ios only for an affected host or target-specific implementation; do not apply native-app instructions blindly to commonMain.

The Kotlin Multiplatform source-set reference defines commonMain, commonTest and target compilations. Confirm DSL and task names in the project's installed Kotlin and Gradle versions.

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