// HTTP4K PRO

How Kotlin powers Functional Design: MCP Edition

Everything from the KotlinConf talk - slides, source code, and a working demo you can run in 30 seconds.

Highlights

Complete MCP server

A fully spec-compliant MCP server in 50 lines of Kotlin.
Download the project, run the tests, start building.

Countdown MCP
App

The demo from the talk - a working MCP App with a live UI. Connect it to Claude or any MCP client and start counting down.

Test Traffic
& Traces

Add one line to your tests with the Wiretap Intercept JUnit plugin. Get HTTP traffic, OpenTelemetry traces, and sequence diagrams in an HTML report.

Developer
Console

Wrap any http4k app with Wiretap Console - traffic inspection, chaos testing, and an MCP server for AI-assisted debugging.

🎁

Get the demo

The demo is a fully-formed Gradle project - just unzip and open it in IntelliJ IDEA (or your IDE of choice) to explore the code from the talk.

Download
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