ariadne MCP server

ariadne is a helper for people working on Kotlin and Android projects. It looks at the code you changed and tells your AI which unit tests actually need to be run. It is handy if you want quick feedback while you edit, instead of running the whole test suite every time.

What this MCP server does

You ask your AI something like which tests are affected by my changes. The AI passes your project folder to ariadne. ariadne runs a Git diff to see what changed, then analyzes the code to trace which tests call into the changed parts. It hands back a list of test names, so you and your AI know exactly what to run.

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What you can do with it

• Find which unit tests your latest edits affect
• Check only your uncommitted changes for a fast loop
• Compare your whole branch against the main branch
• Get a clean list of test names to run
• See a warning when changes are outside the analyzed code
• Skip running the full test suite while you iterate

Try asking your AI

• “Which tests are affected by my current changes?”
• “Run ariadne on this project and tell me what to test”
• “Only look at my uncommitted changes and list the affected tests”
• “Compare my branch to main and show me the affected tests”

What it gives back to you

You get back a sorted list of test names, like com.example.UserServiceTest.testCreateUser. If your changes touch things ariadne cannot analyze, such as build scripts or resources, it adds a note telling you to run the full suite for those. If the analysis takes too long, it tells you that too instead of guessing.

Before you start

Who it's for

Kotlin and Android developers who want faster feedback while editing, and anyone using an AI assistant to help with their code.