Who contributed to Spring on May 21, 2026?

2 developers shipped this update, including mjd507 and dependabot[bot].

What were the notable Spring updates?

feat(ChatClient): Auto-register ToolCallAdvisor when tools are configured, feat(ChatClient): introduce ToolSpec fluent API, and GH-5884: Reuse JsonSchemaGenerator in BeanOutputConverter.

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The Wire · Showcase

SPRING AI TOOLS API OVERHAUL SHIPS WITH AUTO-REGISTRATION AND FLUENT DSL

By RepoJournal · Filed 06:05 UTC on May 21, 2026 · About Spring

2 people shipped this

dependabot[bot] @dependabot[bot] 2 cited

mjd507 @mjd507 1 cited

Spring AI replaced its scattered tool-registration methods with a unified ToolSpec fluent API while automatically wiring ToolCallAdvisor when tools are configured.

The AI team landed three major capability upgrades overnight. ToolCallAdvisor now auto-registers when tools are configured on ChatClient [1], eliminating boilerplate setup and automatically tuning stream behavior based on whether you call() or stream(). The new ToolSpec fluent API [2] consolidates what were scattered toolCallbacks, toolNames, and toolContext overloads into a single consumer-based entry point with instances(), callbacks(), context(), and advisor() methods, deprecating the old overloads for cleaner code. BeanOutputConverter was refactored to reuse the core JsonSchemaGenerator [3], removing postProcessSchema() as an extension point and recursively applying additionalProperties: false to nested schemas for better schema safety. Spring cleaned up the integration-tests bindings config for main [8], while also removing unused HanaDB properties [6] and CosmosDB components entirely [7] with upgrade docs shipped alongside. Spring Security bumped JUnit to 6.1.0 [9] and CAS client to 4.1.1 [10] with no breaking changes. Spring Integration added DSL support for Redis Stream Channel Adapters [4] [5], a long-requested feature for reactive stream patterns.

Action items

→ Review ToolSpec migration if you use ChatClient tool registration - old methods are deprecated spring-projects/spring-ai [plan]
→ If using CosmosDB or HanaDB in Spring AI, check upgrade notes and plan extraction to external modules spring-projects/spring-ai [plan]
→ Upgrade Spring Security dependencies to pick up JUnit 6.1.0 and CAS 4.1.1 in your next build spring-projects/spring-security [monitor]
→ Test Spring Integration Redis Stream adapters if you're on the DSL path spring-projects/spring-integration [monitor]

References

[1] feat(ChatClient): Auto-register ToolCallAdvisor when tools are configured spring-projects/spring-ai
[2] feat(ChatClient): introduce ToolSpec fluent API spring-projects/spring-ai
[3] GH-5884: Reuse JsonSchemaGenerator in BeanOutputConverter spring-projects/spring-ai
[4] GH-8108: Add DSL for Redis Stream Channel Adapters ↗ spring-projects/spring-integration
[5] GH-8108: Add DSL for Redis Stream Channel Adapters spring-projects/spring-integration
[6] Remove unused Hanadb properties and other configs spring-projects/spring-ai
[7] Remove CosmosDB related components from Spring AI spring-projects/spring-ai
[8] Fix spring-cloud-bindings for main branch spring-projects/spring-ai-integration-tests
[9] Bump org.junit:junit-bom from 6.0.3 to 6.1.0 ↗ spring-projects/spring-security
[10] Bump org.apereo.cas.client:cas-client-core from 4.1.0 to 4.1.1 ↗ spring-projects/spring-security

Quick answers

What shipped in Spring on May 21, 2026?: Spring AI replaced its scattered tool-registration methods with a unified ToolSpec fluent API while automatically wiring ToolCallAdvisor when tools are configured. In total, 23 commits and 4 pull requests landed.
Who contributed to Spring on May 21, 2026?: 2 developers shipped this update, including mjd507 and dependabot[bot].
What were the notable Spring updates?: feat(ChatClient): Auto-register ToolCallAdvisor when tools are configured, feat(ChatClient): introduce ToolSpec fluent API, and GH-5884: Reuse JsonSchemaGenerator in BeanOutputConverter.

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