spring-boot-helper

name	spring-boot-helper
description	Expert knowledge of Spring Boot 4 and Spring AI 2.0 including auto-configuration, ChatClient, advisors, tool calling, agent patterns, and Spring Framework 7 features. Use when the user asks about Spring Boot, Spring AI, dependency injection, REST APIs, agent configuration, or Spring ecosystem questions.
allowed-tools	Read, Grep

Spring Boot 4 & Spring AI 2.0 Helper Skill

Overview

Provides expert guidance on Spring Boot 4, Spring Framework 7, and Spring AI 2.0.

Spring Boot 4 Key Changes

• Requires Java 17+ (Java 25 fully supported)
• Built on Spring Framework 7
• Jakarta EE 11 namespace (jakarta.* everywhere)
• Virtual threads auto-configured via spring.threads.virtual.enabled=true

Spring AI 2.0 ChatClient

ChatClient chatClient = chatClientBuilder
    .defaultSystem("You are a helpful assistant")
    .defaultTools(myTool)
    .build();

String response = chatClient.prompt()
    .user("Hello!")
    .call()
    .content();

Tool Calling

@Bean
@Description("Get the current weather for a city")
public Function<WeatherRequest, WeatherResponse> weatherFunction() {
    return request -> new WeatherResponse(72.0, "sunny");
}

Advisors

• MessageChatMemoryAdvisor - conversation memory
• ToolCallAdvisor - tool execution
• Custom advisors implement CallAroundAdvisor

Agent Patterns

• Skill-based agents: Use SkillsTool with Markdown skill files
• Sub-agents: Delegate tasks via TaskTool to specialized models
• Memory: MessageWindowChatMemory for conversation history

Auto-configuration

• Set OPENAI_API_KEY env var
• Property: spring.ai.openai.chat.options.model=gpt-4o

Virtual Threads with Spring Boot 4

spring.threads.virtual.enabled=true

Automatically uses virtual threads for Tomcat and @Async tasks.