marcoklaassen/weather-mcp-quarkus

MCP Server - Weather Germany

This is a simple MCP Server written in Quarkus to get Weather Information from Germany. It uses the https://brightsky.dev/docs/#/ API to get the information.

Integration

Quarkus Dev UI

You can also use the Quarkus Dev UI to test your MCP Server integrated in a Chatbot:

• Build the weather-mcp-quarkus application with ./mvnw package
• Checkout this Quarkus project: https://github.com/marcoklaassen/mcp-dev-client
• Configure the src/main/resources/application.properties (set openai base url, api-key, model name, path to your mcp server jar)
• Start the application with quarkus dev
• Visit the Dev UI -> Langchain4j Core -> Chat: http://localhost:8080/q/dev-ui/io.quarkiverse.langchain4j.quarkus-langchain4j-core/chat
• Ask for the weather in a german city

If you want to test your MCP Server without Chatbot integration you can also have a look at the Dev UI -> LangChain4j Model Context Protocol client -> MCP clients: http://localhost:8080/q/dev-ui/io.quarkiverse.langchain4j.quarkus-langchain4j-mcp/mcp-clients

Claude Desktop

• Download & Install Claude: https://claude.ai/download
• Build the weather-mcp-quarkus application with ./mvnw package
• Go to ~/Library/Application Support/Claude (in case of Mac)
• Open the file claude_desktop_config.json with an editor
• Insert the MCP Server:

{
    "mcpServers": {
        "weather": {
            "command": "java",
            "args": ["-jar",
                    "<path-to-your-project>/target/weather-mcp-quarkus-1.0.0-SNAPSHOT-runner.jar"]
        }
    }
}

• ask about the weather in Germany:

FAQ

Where to find Logs when using Claude as clients: ~/Library/Logs/Claude