Example server doesn't load annotated prompts

[ben-gineer]

I have an MCP server using spring-ai (great work). It's exposing tools correctly. However, I cannot get it to expose Prompts correctly.

I'm using examples from https://github.com/spring-projects/spring-ai-examples/tree/main/model-context-protocol/mcp-annotations-server

Am I correct in thinking that this doesn't currently support Webflux transport?

I have this example prompt:

@Service
public class PromptProvider {

    /**
     * A simple greeting prompt that takes a name parameter.
     *
     * @param name The name to greet
     * @return A greeting message
     */
    @McpPrompt(name = "greeting", description = "A simple greeting prompt")
    public GetPromptResult greetingPrompt(
            @McpArg(name = "name", description = "The name to greet", required = true) String name) {
        return new GetPromptResult("Greeting", List.of(new PromptMessage(Role.ASSISTANT,
                new TextContent("Hello, " + name + "! Welcome to the MCP system."))));
    }
}

And this example configuration::

@Configuration
public class McpConfig {

    @Bean
    public List<McpServerFeatures.SyncPromptSpecification> promptSpecs(PromptProvider promptProvider) {
        return SpringAiMcpAnnotationProvider.createSyncPromptSpecifications(List.of(promptProvider));
    }
}

My server is configured to use prompts:

2025-05-27T23:10:49.731+01:00  INFO 46202 --- [           main] o.s.a.m.s.a.McpServerAutoConfiguration   : Enable tools capabilities, notification: true
2025-05-27T23:10:49.731+01:00  INFO 46202 --- [           main] o.s.a.m.s.a.McpServerAutoConfiguration   : Registered tools: 4
2025-05-27T23:10:49.731+01:00  INFO 46202 --- [           main] o.s.a.m.s.a.McpServerAutoConfiguration   : Enable resources capabilities, notification: true
2025-05-27T23:10:49.731+01:00  INFO 46202 --- [           main] o.s.a.m.s.a.McpServerAutoConfiguration   : Enable prompts capabilities, notification: true

I'm on:

• spring-ai-starter-mcp-server-webflux: 1.0.0
• spring-ai-mcp-annotations: 0.1.0
• spring-boot: 3.5.0
• Java 21

Thanks,

Ben