Combined Build Agent release notes for upgrades from Yokohama to Zurich

How to use this page

To help you prepare for your upgrade, we have combined the cross-family Build Agent release notes onto one page. Read this summary of the new features, changes, and updated information for your product from Yokohama to Zurich.

Tip:

If there were no updates for a release notes section in a certain family release, we included a short note for your reference. For example, if a product did not have any updates in Tokyo, the row says "No updates for this release."

Important information for upgrading Build Agent to Zurich

Before you upgrade to Zurich, review these pre- and post-upgrade tasks and complete the tasks as needed.


Release	Release notes
Yokohama	No updates for this release.
Zurich	No updates for this release.

New features

Between your current release family and Zurich, new features were introduced for Build Agent.


Release	Release notes
Yokohama	No updates for this release.
Zurich	Zurich Patch 10 MCP server support in ServiceNow Studio Connect Build Agent to external MCP servers in ServiceNow Studio. Previously, MCP server connectivity was only available in the ServiceNow IDE. Additional MCP server integrations Integrate Build Agent with newly supported MCP servers. Access update sets from Build Agent View update sets created by Build Agent from within the chat panel in ServiceNow Studio. Each checkpoint includes a button that opens the relevant update set in a new tab. UI validation tool in ServiceNow Studio Validate user interface output during app creation with the UI validation tool in Build Agent, now available in ServiceNow Studio. Search retrieval tool support Use the Search retrieval tool to enable agents to fetch and present relevant information from configured data sources in response to user queries. Agents can surface knowledge articles, catalog items, and other indexed content directly within the agentic workflow, reducing the need for users to navigate to separate search interfaces. Support for more file types Upload more types of files to Build Agent to describe what you want to build, including images, documents, and text and code files. Zurich Patch 9 MCP Client integration Connect Build Agent to external MCP servers to bring tools and data sources directly into your build workflow. External resources participate alongside Build Agent on the ServiceNow AI Platform, which helps reduce context switching and manual data transfer between tools. Create workflows, agents, and skills Turn business requirements into fully configured agents, skills, and agentic workflows for your custom applications. Build Agent inspects the existing tables, roles, business rules, and metadata in your app to create tailored in-app agents and tools. Test Agent for Build Agent Use Test Agent to execute Automated Test Framework (ATF) tests right from the Build Agent chat panel for test artifacts created in the same session. When tests fail, the generated tests and test results are saved in the standard ATF record tables and can be scheduled for continued regression testing for the app. If tests are edited by the test agent after troubleshooting, those edits are automatically saved to the test records. UI validation tool Validate user interface output during Build Agent app creation in the ServiceNow IDE using the integrated UI validation, which runs Playwright-based UI checks on Cloud Runner and surfaces failures with diagnostic context directly in the Build Agent panel. Semantic search for instance artifact discovery Use semantic search in Build Agent to locate relevant instance artifacts, including tables, scripts, and business rules during build and edit tasks. Find files, applications, and knowledge on your instance based on meaning instead of exact keywords. Additional model support Choose the provider and model that fits your organizational needs in Build Agent, which now supports Anthropic Claude on AWS Sonnet 4.6 and Azure OpenAI GPT 5.4. Expanded metadata support Work with more metadata types in Build Agent, which now supports flows, Service Catalog configurations, inbound email actions, dictionary overrides, choice lists, condition builder query conditions, and enhanced Service Portal capabilities. Contextual launch for Build Agent Include context from ServiceNow Studio tabs and component preview screens when you open Build Agent, which helps reduce the need to manually search for and specify context in the chat panel. Zurich Patch 8 Additional metadata support Work with more metadata types in Build Agent, which now supports email. Zurich Early Availability Build Agent in ServiceNow Studio Access Build Agent in ServiceNow Studio to build apps conversationally in a consolidated development environment. Improved LLM support Use AWS Claude Opus 4.6 and Sonnet 4.5 in Build Agent for contextual conversations. New metadata support Work with more metadata types, as Build Agent now supports the following: Email integration List controls Service Catalog items UI components UI policies UI views Workspaces

Changes

Between your current release family and Zurich, some changes were made to existing Build Agent features.


Release	Release notes
Yokohama	No updates for this release.
Zurich	Zurich Patch 8 Build Agent version parity for PDIs Personal development instances (PDIs) are now updated to match the latest Build Agent version, delivering a consistent experience across both personal and production-track instances. Developers testing and building on PDIs have access to the same capabilities available in production environments. Updated interaction limits To provide developers more room to iterate, the following Build Agent limits have been increased: Build Agent (Trial): 100 prompts per instance per 30-day cycle PDIs: 25 prompts per instance per cycle Note: Limits are per-instance, not per-user. Only submitted prompts, which doesn't include plan approvals, contribute to the limit. Zurich Early Availability Support for global scope Build apps and metadata in the global scope.

Removed

Between your current release family and Zurich, some Build Agent features or functionality were removed.


Release	Release notes
Yokohama	No updates for this release.
Zurich	No updates for this release.

Deprecations

Between your current release family and Zurich, some Build Agent features or functionality were deprecated.


Release	Release notes
Yokohama	No updates for this release.
Zurich	No updates for this release.

Activation information

Review information on how to activate Build Agent.


Release	Release notes
Yokohama	No updates for this release.
Zurich	Build Agent is a ServiceNow AI Platform feature that is active by default. Note: Build Agent is dependent on Now Assist for Creator. For more information, see Now Assist for Creator release notes.

Additional requirements

If any additional requirements were introduced or changed for Build Agent we have noted them here.


Release	Release notes
Yokohama	No updates for this release.
Zurich	No updates for this release.

Browser requirements

If any specific browser requirements were introduced or changed for Build Agent we have noted them here.


Release	Release notes
Yokohama	No updates for this release.
Zurich	No updates for this release.

Accessibility information

Review details on accessibility information for Build Agent, such as specific requirements or compliance levels.


Release	Release notes
Yokohama	No updates for this release.
Zurich	No updates for this release.

Localization information

If there are specific localization considerations for Build Agent we have noted them here.


Release	Release notes
Yokohama	No updates for this release.
Zurich	No updates for this release.

Highlight information

If there are specific highlight considerations for Build Agent we have noted them here.


Release	Release notes
Yokohama	No updates for this release.
Zurich	Use Build Agent in ServiceNow Studio. Work with additional Model Context Protocol (MCP) support. Create apps and metadata in the global scope. Choose from newly supported models. Access update sets created in Build Agent directly from the chat panel. See Build Agent for more information.