--- sourceDocument: Yokohama Build or modify applications sourceDocumentLink: https://www.servicenow.com/docs/r/yokohama/application-development Release : - yokohama ft:locale : - en-US ft:publication_title : - Yokohama Build or modify applications ft:clusterId : - cadev bundleId : - cadev workflow : - Development, Data, and Analytics --- # ServiceNow Fluent API reference # ServiceNow Fluent API reference {#ariaid-title1} * Release version: Yokohama * * Updated March 12, 2026 * * ![](https://www.servicenow.com/docs/portal-asset/ico-clock) 1 minute to read Use ServiceNow Fluent APIs to define the metadata that makes up scoped applications in source code with the ServiceNow IDE or ServiceNow SDK. Note: For the latest ServiceNow Fluent API documentation and examples, see the [ServiceNow Fluent API reference](https://servicenow.github.io/sdk/) and [ServiceNow SDK examples repository](https://github.com/ServiceNow/sdk-examples) on GitHub. * **[ServiceNow Fluent language constructs](https://www.servicenow.com/docs/3RTnzOESnTILKQIIO7V1sg)** ServiceNow Fluent language constructs provide additional functionality for development in source code with ServiceNow Fluent APIs. * **[Access Control List API - ServiceNow Fluent](https://www.servicenow.com/docs/rsr1yima4BAol0J25g8SGA#acl-api-now-ts)** The Access Control List API defines access control lists \[sys_security_acl\] that secure parts of an application. * **[Application Menu API - ServiceNow Fluent](https://www.servicenow.com/docs/chnyLnr04zznuxTEX6kyxg#app-menu-api-now-ts)** The Application Menu API defines menus in the application navigator \[sys_app_application\]. * **[Automated Test Framework Test API - ServiceNow Fluent](https://www.servicenow.com/docs/oac26PIqt3KvNvqzUpZ1gA#atf-test-now-ts)** The Automated Test Framework Test API defines automated tests \[sys_atf_test\] that you can run to confirm that your instance works after making a change. * **[Business Rule API - ServiceNow Fluent](https://www.servicenow.com/docs/hcZds1GkMdytJHWjxGNkuA#business-rule-api-now-ts)** The Business Rule API defines server-sides scripts \[sys_script\] that run when a record is displayed, inserted, updated, or deleted, or when a table is queried. * **[Client Script API - ServiceNow Fluent](https://www.servicenow.com/docs/XlafH2Z_E56T1jNEgg5r8A#client-script-api-now-ts)** The Client Script API defines client-side scripts \[sys_script_client\] that run JavaScript on the client (web browser) when client-based events occur, such as when a form loads, after form submission, or when a field changes value. * **[Cross-Scope Privilege API - ServiceNow Fluent](https://www.servicenow.com/docs/FOeOZkR7CVCS_Muu~SctLQ#cs-privileges-api-now-ts)** The Cross-Scope Privilege API defines cross-scope privileges \[sys_scope_privilege\] for runtime access tracking. * **[Dashboard API - ServiceNow Fluent](https://www.servicenow.com/docs/MTTl4yJU6nb2HoZatE9w7w#fluent-dashboard-api)** The Dashboard API defines dashboards \[par_dashboard\] for organizing and sharing data visually. * **[Email Notification API - ServiceNow Fluent](https://www.servicenow.com/docs/FQLbZNGcEaqGXdzM_~vctg#fluent-email-notification-api)** The Email Notification API defines notifications \[sysevent_email_action\] that send automated emails based on database operations, custom events, or manual triggers. * **[Flow API - ServiceNow Fluent](https://www.servicenow.com/docs/Bjrgy3Xx9BkRCZQExND7IA#fluent-flow-api)** The Flow API defines flows and subflows \[sys_hub_flow\], which automate business processes with reusable multiple-step components. * **[Import Sets API - ServiceNow Fluent](https://www.servicenow.com/docs/8TZzIOfvxJSzHNqDK1rprw#fluent-import-sets-api)** The Import Sets API defines transform maps \[sys_transform_map\] that specify how to transform and map data from the import set staging table to target tables. * **[List API - ServiceNow Fluent](https://www.servicenow.com/docs/oR9XiHqzcKrKeycZlnRltQ#list-api-now-ts)** The List API defines list views \[sys_ui_list\] for tables. * **[Property API - ServiceNow Fluent](https://www.servicenow.com/docs/_8p1HzQ_4YuAxEq_4HrcGA#property-api-now-ts)** The Property API defines system properties \[sys_properties\] that control instance behavior. * **[Record API - ServiceNow Fluent](https://www.servicenow.com/docs/TPuAIpTcWh9Xd1b7Via69w#record-api-now-ts)** The Record API defines records in any table. Use the Record API to define application metadata that doesn't have a dedicated ServiceNow Fluent API. * **[Role API - ServiceNow Fluent](https://www.servicenow.com/docs/hdrGz27sawyUt1lx7pLLJA#role-api-now-ts)** The Role API defines roles \[sys_user_role\] that grant specific permissions to users of an application. * **[Script Action API - ServiceNow Fluent](https://www.servicenow.com/docs/Qp8ayYLl_gsoHbRwdf~IFA#fluent-script-action-api)** The Script Action API defines script actions \[sysevent_script_action\] that run when an event occurs. * **[Script Include API - ServiceNow Fluent](https://www.servicenow.com/docs/2D8AkMiRKQ3yatDdExOn0Q#fluent-script-include-api)** The Script Include API defines script includes \[sys_script_include\] that store JavaScript functions and classes for use by server-side scripts. * **[Scripted REST API - ServiceNow Fluent](https://www.servicenow.com/docs/cpSJieH7fR5m0Oanc_qmWA#scripted-rest-api-api-now-ts)** The Scripted REST API defines the endpoints, query parameters, and headers for a scripted REST service \[sys_ws_definition\]. * **[Service Catalog API - ServiceNow Fluent](https://www.servicenow.com/docs/YhM2bZfMfgpJVUrUzFjBtg#fluent-service-catalog-api)** The Service Catalog API defines catalog items \[sc_cat_item\], record producers \[sc_cat_item_producer\], and related aspects of service catalogs. * **[Service Level Agreement API - ServiceNow Fluent](https://www.servicenow.com/docs/_3lZpLS8igVFfgATlAf9iw#fluent-sla-api)** The Service Level Agreement API defines service level agreements \[contract_sla\] that set the amount of time for a task to reach a specified condition, ensuring that tasks are resolved according to the service levels agreed between a service provider and customer. * **[Service Portal API - ServiceNow Fluent](https://www.servicenow.com/docs/OrZ3blah8UT5Sdsr46I5bA#fluent-service-portal-api)** The Service Portal API defines custom widgets \[sp_widget\] for portal pages. * **[Table API - ServiceNow Fluent](https://www.servicenow.com/docs/FEMlpMg~VSkcY6dhCbNiig#table-api-now-ts)** The Table API defines tables \[sys_db_object\] to store data in an application. * **[UI Action API - ServiceNow Fluent](https://www.servicenow.com/docs/nVcUvh_PEPN11Ag8YfV~Rg#fluent-ui-action-api)** The UI Action API defines custom user interface (UI) actions \[sys_ui_action\], such as buttons, links, and context menu items on forms and lists. * **[UI Page API - ServiceNow Fluent](https://www.servicenow.com/docs/7Fl2GoksZFooqganHBxXHA#fluent-ui-page-api)** The UI Page API defines custom user interface (UI) pages \[sys_ui_page\] that display forms, dialogs, lists, and other UI components. * **[UI Policy API - ServiceNow Fluent](https://www.servicenow.com/docs/~F3zr32SbJSRP5AvkvTBTA#fluent-ui-policy-api)** The UI Policy API defines user interface (UI) policies \[sys_ui_policy\] that dynamically change the behavior of information on a form and control custom process flows for tasks. * **[Workspace API - ServiceNow Fluent](https://www.servicenow.com/docs/qLN3AAAORewa6KAtGYxQ8Q#fluent-workspace-api)** The Workspace API defines configurable workspace experiences for organizing and sharing data visually. **Related concepts** * [ServiceNow Fluent](https://www.servicenow.com/docs/~uRaWXiuRJuyUsvJypBknQ "Define application metadata in source code using the ServiceNow Fluent domain-specific programming language.")