Release 5.0 2026.06.02.1
New Features πβ
New Serenity* Star Engineβ
We've rebuilt the foundation that runs your Agents. The new Serenity* Star Engine is faster and more stable, keeps pace with the latest advances in agentic systems, and gives us a stronger base to build on going forward. The rebuilt architecture improves how Agents reason over multiple steps, call skills, and stream responses β and it lets us ship new capabilities to you faster. No action is required β every Agent now runs on the new engine automatically, with no changes to your existing configurations or integrations.
Reasoning visualization β An Agent's reasoning flow can now be visualized, giving you better insight into how each response was produced.

Improved skill logging β Skill logs now clearly distinguish between parallel and sequential executions, making it easier to follow what your Agent did and when.

Serenity* Store & Marketplaceβ
Buy and sell agents across the Serenity* Star ecosystem. Use the Serenity* Marketplace to publish your own agents and earn usage credits on every purchase. Then browse the Serenity* Store to find ready-to-use agents and put them to work with little to no setup.
This functionality is currently in preview. The ability to get agents from the Store is coming soon.

Bring Your Own Modelβ
Bring your own LLMs into Serenity* Star. Run models hosted on your own infrastructure for greater governance and to meet your compliance requirements.

Bring Your Own Model requires an OpenAI-compatible inference endpoint.
Citationsβ
Agents now support citations. When a response draws on your Knowledge Sources, it can show exactly which source each part of the answer came from β giving you clearer traceability and greater trust in agent output. To learn more, refer to the Knowledge documentation.
Citation results are currently only available via the API. Support for Serenity* AI Chat, Agent Preview, and the Chat Widget is coming soon.

Enhancements β¨β
Guardrailsβ
RagMetrics Guardrails now let you select the evaluator model. Tenants can configure their own RagMetrics account and choose the evaluator model that best fits their needs.

Input Parameters Hookβ
The Chat Widget now provides a getInputParameters hook. Pass a custom function to supply updated input parameters with each message sent. Refer to the Chat Widget (JavaScript) documentation for more details.
Knowledgeβ
- Knowledge Source metadata can now be generated or updated automatically with the "Generate with AI" button in the metadata section.

- The file types allowed in volatile Knowledge can now be configured per agent, so you control which file types users can attach to a conversation.

Bug Fixes & Minor Improvements π οΈβ
- Improved performance of aggregate statistics in the Agent Manager and Cost Dashboard.
- Adjusted parameter validation in the Agent Design Studio when sending a message.
- Improved positioning of select components that could render off-screen.
- Improved empty states in the Agent Design Studio so they take up less space.
- Fixed an error that occurred when changing the Guardrails validation method.
- Dataset validation now runs on the replace and append API endpoints to return a clear error to the user.
- Renamed the RagMetrics "Legal Advice" category to "Compliance Awareness".
- Improved anti-forgery token regeneration in the Agent Designer, preventing an authentication error when the token expired.
- Improved parameter validation in the Agent Design Studio API
- Fix a validation error when changing evaluation method in Guardrails configuration
- Improved schema validation in Dataset API endpoints when doing replace and append
- Improved connection setting pooling in fallback models
























































