--- sourceDocument: Yokohama Release Notes sourceDocumentLink: https://servicenow-prod.fluidtopics.net/r/yokohama/release-notes Release : - yokohama ft:locale : - en-US ft:publication_title : - Yokohama Release Notes ft:clusterId : - rn bundleId : - rn --- # ServiceNow Otto for App Engine release notes # ServiceNow Otto for App Engine release notes {#ariaid-title1} Release version: Yokohama Updated June 4, 2025 ![](https://www.servicenow.com/docs/portal-asset/ico-clock) 2 minutes to read The ServiceNow® ServiceNow Otto for App Engine application enables creators to enhance custom applications with AI agents and skills that application users can leverage at runtime. ServiceNow Otto for App Engine is a new application in the Yokohama Patch 3 release. ## About ServiceNow Otto for App Engine {#now-assist-for-app-engine-rn__now-assist-for-app-engine-rn-highlights} [Yokohama Patch 11](https://servicenow-prod.fluidtopics.net/o~Ty6nl6ETxZAE_DIVoJJw "The Yokohama Patch 11 release contains important problem fixes.") * Review changes to Now Assist usage measurement. * Some Now Assist skills, agents, and agentic workflows are on by default. * Additional role configuration is required for agentic workflows and AI agents included with Now Assist applications. {#now-assist-for-app-engine-rn__ul_th5_hpb_xhc} [Yokohama Patch 3](https://servicenow-prod.fluidtopics.net/jXrkPnnmOuaGleV7JYQPtA "The Yokohama Patch 3 release contains important problem fixes.") * Create and deploy AI agents within custom applications, helping to empower creators and accelerate time-to-value. * Build custom AI agents and skills for the unique workflow of an application using AI Skill Kit and AI Agent Studio. * Leverage AI agents and skills created with ServiceNow Otto for App Engine in custom applications at runtime, helping improve efficiency. {#now-assist-for-app-engine-rn__ul_cch_swy_vfc} See [Now Assist for App Engine](https://www.servicenow.com/docs/access?context=add-ai-to-custom-apps-with-now-assist-for-app-engine-enterprise&version=yokohama&pubname=yokohama-application-development&ft:locale=en-US) for more information.{#now-assist-for-app-engine-rn__now-assist-for-app-engine-rn-highlights-3} ## Activation and other requirements Important: ServiceNow Otto for App Engine is available in the ServiceNow Store. For details, see the "Activation information" section of these release notes. Activation information : Install ServiceNow Otto for App Engine by requesting it from the ServiceNow Store. Visit the [ServiceNow Store](https://store.servicenow.com/sn_appstore_store.do#!/store/home) website to view all the available apps and for information about submitting requests to the store. For cumulative release notes information for all released apps, see the [ServiceNow Store version history release notes](https://www.servicenow.com/docs/r/store-release-notes/sn-store-release-notes.html).{#now-assist-for-app-engine-rn__now-assist-for-app-engine-rn-activation-1} Additional requirements : Check your entitlements to determine whether you have access to the ServiceNow Otto for App Engine application.{#now-assist-for-app-engine-rn__now-assist-for-app-engine-rn-additional-reqs-1} ## January 2026 {#ariaid-title2} The ServiceNow® ServiceNow Otto for App Engine application enables creators to enhance custom applications with AI agents and skills that application users can leverage at runtime. ServiceNow Otto for App Engine is a new application in the Yokohama Patch 3 release. ### What's changed {#now-assist-for-app-engine-rn-2026-01__now-assist-for-app-engine-rn-changed-features} [Changes to Now Assist usage measurement](https://www.servicenow.com/docs/access?context=monitoring-now-assist-usage&version=yokohama&pubname=yokohama-platform-administration&ft:locale=en-US) : Starting with Yokohama Patch 5, Now Assist usage measurement is transitioning from a 365-day look-back model to a 365-day burn-down model, with usage resetting at the contract anniversary date. For more information, refer to [KB KB2704710: Now Assist Usage - Overview \& New Measurement Logic](https://support.servicenow.com/kb?id=kb_article_view&sysparm_article=KB2704710). [Some Now Assist skills are turned on by default](https://www.servicenow.com/docs/access?context=now-assist-skills-on-by-default&version=yokohama&pubname=yokohama-intelligent-experiences&ft:locale=en-US) : The new default behavior works as follows: * New customers: When you install a Now Assist product, designated skills are turned on automatically. * Existing customers who are upgrading (starting with Yokohama Patch 11): Any previously unconfigured skill is turned on automatically (the skill was never configured and turned on, then turned off again). Previously configured skills that were turned on, then off, remain inactive. [Configure ACLs for AI agents and agentic workflows](https://www.servicenow.com/docs/access?context=aia-security-implementation&version=yokohama&pubname=yokohama-intelligent-experiences&ft:locale=en-US) : Configure the access control lists for who can discover and trigger AI agents and agentic workflows in their guided setups in AI Agent Studio. You can determine whether an AI agent or agentic workflow behaves as a dynamic user or as an AI user. You can also specify if an AI agent or agentic workflow can be available to all authenticated users or publicly available. {#now-assist-for-app-engine-rn-2026-01__now-assist-for-app-engine-rn-changed-features-1} ## May 2025 {#ariaid-title3} The ServiceNow® ServiceNow Otto for App Engine application enables creators to enhance custom applications with AI agents and skills that application users can leverage at runtime. ServiceNow Otto for App Engine is a new application in the Yokohama Patch 3 release. ### What's new {#now-assist-for-app-engine-rn-2025-05__now-assist-for-app-engine-rn-new-features} [Create an AI agent](https://www.servicenow.com/docs/access?context=configure-next-best-action-agent&version=yokohama&pubname=yokohama-intelligent-experiences&ft:locale=en-US) : Create a custom AI agent in AI Agent Studio to assist your application users with their tasks. [Create a skill](https://www.servicenow.com/docs/access?context=create-new-skill&version=yokohama&pubname=yokohama-intelligent-experiences&ft:locale=en-US) : Create a custom skill for Now Assist, enabling you to have greater flexibility with the generative AI capabilities available on the ServiceNow AI Platform. {#now-assist-for-app-engine-rn-2025-05__now-assist-for-app-engine-rn-new-features-1}