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MCP Kotlin Minimal Client Server Sample

by takahirom

A simple weather tool demonstrating server-client interaction using the Model Context Protocol (MCP). It's a Kotlin version of a similar sample, showcasing tool execution flow with an LLM.

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What is MCP Kotlin Minimal Client Server Sample?

This is a minimal Kotlin client-server sample demonstrating the Model Context Protocol (MCP). It simulates a weather tool where a client application interacts with a server to retrieve weather information, orchestrated by an LLM.

How to use MCP Kotlin Minimal Client Server Sample?

The sample includes a client (Client.kt) and a server (server.main.kts). The diagrams show the initialization and tool execution flow. The client connects to the server, discovers available tools (e.g., 'get_weather'), and then uses an LLM to determine when and how to call those tools. The LLM then receives the tool's response and generates a final response to the user.

Key features of MCP Kotlin Minimal Client Server Sample

  • Demonstrates MCP client-server interaction

  • Uses Kotlin for both client and server

  • Illustrates tool discovery and execution

  • Integrates with an LLM for orchestration

  • Provides a simple weather tool example

Use cases of MCP Kotlin Minimal Client Server Sample

  • Learning MCP implementation

  • Understanding client-server communication patterns

  • Integrating LLMs with external tools

  • Building conversational agents

  • Prototyping tool-based applications

FAQ from MCP Kotlin Minimal Client Server Sample

What is MCP?

MCP stands for Model Context Protocol, a protocol for client-server interaction, especially useful for connecting LLMs with external tools.

What is the purpose of this sample?

This sample demonstrates a minimal implementation of MCP using Kotlin, showcasing how a client can discover and execute tools on a server, guided by an LLM.

How does the LLM fit into the picture?

The LLM decides which tool to use based on the user's input and the available tool information provided by the server. It also generates the final response to the user based on the tool's output.

What is the 'get_weather' tool?

The 'get_weather' tool is a simulated tool on the server that returns the weather information for a given location.

Where can I find the client and server code?

The client code is located in src/main/kotlin/Client.kt, and the server code is in server.main.kts.