https://developer.android.com/agents/skills/r8-analyzer/skill

Analyze your project's R8/ProGuard configuration to identify redundant keep rules blocking code shrinking. It flags library-wide patterns, such as AndroidX or Kotlin keeps, that are unnecessary because dependencies ship their own consumer rules.

The best way to refine overly broad keep rules is to evaluate them using an impact hierarchy, assessing subsumption to identify broader rules that can be narrowed to reduce code retention while maintaining runtime safety.

To keep classes safe from shrinking when using reflection, inspect code and adjacent usage patterns to suggest narrow keep rules specifically aligned to the reflection scenarios, preventing unnecessary code retention.

Yes, you can validate AGP and R8 settings across Gradle-based codebases by comparing build inputs against provided configuration references to review proguard-rules.pro and assess build optimization settings.

No, the R8 analyzer does not modify rule files directly; it produces concise, actionable guidance and recommendations for removing or refining keep rules without altering your build configurations.