JetWhale is a next-generation, extensible debugging tool inspired by Flipper.

It is built with Kotlin and Jetpack Compose, making it especially familiar and approachable for Kotlin / Android developers. Thanks to its Kotlin-first design, JetWhale can be introduced with a minimal learning curve.

[!NOTE] This project is under active development. We welcome feedback as we work toward a stable release. Please note that the Plugin SDK APIs are not yet finalized and may change in the future.

• 🐳 Powerful Debugging Platform

  • Provides a modern and rich debugging experience powered by Kotlin and Jetpack Compose
  • Supports debugging multiple sessions simultaneously
  • Debugging tools are implemented as plugins, which can be dynamically loaded at runtime as JAR files

• ⚙️ Easy Integration and Customization

  • DSL-based APIs allow you to quickly set up and configure JetWhale in your application
  • Customize the debugging experience by creating your own plugins using familiar Kotlin and Jetpack Compose paradigms

• 🛜 Type-safe Communication with kotlinx.serialization

  • Leverages kotlinx.serialization to enable type-safe communication between the debugger and debuggees

• ✅ Multiplatform Support

  • Supports Android, Desktop(JVM), iOS(Simulator Only), and Web (Js, WasmJs) debuggees

• 🤖 MCP Server Support (Experimental)

  • JetWhale exposes a built-in MCP (Model Context Protocol) HTTP+SSE server, allowing AI agents (e.g. Claude) to interact with debuggee apps directly
  • Built-in tools include screenshot, click, type, scroll, drag, and getAccessibilityTree
  • Plugins can expose their own custom MCP tools by implementing JetWhaleMcpCapablePlugin