Spring AI offers support for Model Context Protocol, or MCP for short, which allows AI models to interact with and access external tools and resources in a structured way. With Spring AI, developers can create their own MCP Servers and expose capabilities to AI models in just a few lines of code.

Authorization and security in MCP

MCP Servers can run locally, using the STDIO transport. To expose an MCP server to the outside world, it must expose a few standard HTTP endpoints. While MCP Servers used privately might not require strict authentication, enterprise deployments need robust security and permission management for exposed endpoints. This challenge is addressed in the newest version of the MCP specification (2025-03-26), which was released last week. It lays the foundation for securing communications between Clients and Servers, leveraging the widespread OAuth2 framework…

Hi, Spring fans! Welcome to another exciting installment of This Week in Spring! It's April Fools day, so be wary of things you read on the internet, but it's also the 11th anniversary of Spring Boot 1.0, which was released this day in 2014! (that's not an April Fools). Happy birthday!

I'm in excellent Austin, TX, at Dr. Venkat Subramaniam's phenomenal Arc of AI show. I love this show! So many amazing people - many of whom also happen to be world-class speakers and engineers - converge in one place to synthesize their vantage point on "A.I." in one hour. Of course, I will be talking about…

Salut fans de Spring! In this installment I'm joined by the legendary Anthony Dahanne. If you've enjoyed success in production using Spring's built-in spring-boot:build-image capability, you've got today's guest Anthony to thank for it!

Using Spring AI 1.0.0-SNAPSHOT: Important Changes and Updates

Spring AI 1.0.0-SNAPSHOT introduces several important changes to artifact IDs, dependency management, and autoconfiguration. This blog post outlines these changes and provides guidance on how to update your projects.

The most significant change is the naming pattern for Spring AI starter artifacts:

• Model starters: spring-ai-{model}-spring-boot-starter → spring-ai-starter-model-{model}
• Vector Store starters: spring-ai-{store}-store-spring-boot-starter → spring-ai-starter-vector-store-{store}
• MCP starters: spring-ai-mcp-{type}-spring-boot-starter → spring-ai-starter-mcp-{type}
…

Hi, Spring fans! Welcome to another installment of This Week in Spring! This week, I’m in Portland, OR, then I'm off to Austin, TX for the Arc of AI show, and then I'm off to Amsterdam for Voxxed Days Amsterdam! If you're around, be sure to say hi! There's a ton of cool stuff to look at, so without any further ado, let's dive right into it!

• There have been some huge changes to the organization and arrangement of Spring AI
• Spring Modulith 1.4 M3, 1.3.4, and 1.2.10 have been released
• Spring Boot 3.5 M3 is available now
• In last week's A Bootiful Podcast, I talked to fellow Java Champion Henri Tremblay
• Spring Boot 3.4.4 is available now
• Spring Boot 3.3.10 is available now
• Spring Batch 5.2.2 is available now
• Spring Cloud 2024.0.1 is available now
• Spring Framework 6.2.5 is available now
• Spring Security 6.5.0 M3 is available now
• Spring Security 6.3.8 and 6.4.4 are available now
• Spring AMQP 4.0.0 M2 is available now
• …

I am happy to announce the availability of Spring Modulith 1.4 M3, 1.3.4, and 1.2.10. While the latter contain a few bug fixes and the usual dependency upgrades to the latest Spring Boot releases, the milestone also includes a few new features:

• Integration tests using @ApplicationModuleTest can now consume bean instances of classes declared in test sources. (GH-202)
• The global PublishedEvents instance registered in an ApplicationContext will now be an AssertablePublishedEvents if AssertJ is on the classpath. (GH-1110)
• We fixed a performance regression in JavaPackage the erroneously repeatedly recomputed all sub packages. (also fixed in 1.3.4 and 1.2.10, GH-1098)
…

On behalf of the team and everyone who has contributed, I'm happy to announce that Spring Boot 3.5.0-M3 has been released and is now available from https://repo.spring.io/milestone.

This release includes 102 enhancements, documentation improvements, dependency upgrades, and bug fixes. Notable new features include:

• Testcontainers and Docker Compose support for lldap/lldap containers
• OpenTelemetry Improvements
• Enhancements and new properties for Spring Batch

Please see the release notes for more details and upgrade instructions.

Thanks to all those who have contributed with issue reports and…

Hi, Spring fans! In this installment I talk to Henri Tremblay, head of TS Imagine Canada, Java Champion, Montreal JUG leader, EasyMock lead dev and all around legend!

On behalf of the team and everyone who has contributed, I'm happy to announce that Spring Boot 3.4.4 has been released and is now available from Maven Central.

This release includes 58 bug fixes, documentation improvements, and dependency upgrades. Including one noteworthy change relating to Tomcat APR support. Thanks to all those who have contributed with issue reports and pull requests.

How can you help?

If you're interested in helping out, check out the "ideal for contribution" tag in the issue repository. If you have general questions, please ask on stackoverflow.com using the spring-boot tag…