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+= Create and Manage APIs in Omni
+
+In Omni, APIs are registered as services defined by formal specifications and managed within a unified experience alongside other service types.
+
+Creating an API establishes its structure and makes it available in the portfolio, while instances represent deployed or managed versions of that API across environments or providers.
+
+== Create an API
+
+To create an API in Omni, add it to the APIs catalog either by registering it manually or by connecting to a provider.
+
+* *Register manually* – Upload a specification file to define a new API.
+* *Connect to provider* – Discover and import APIs from external platforms. See xref:omni-connect-providers-to-add-services.adoc[].
+
+Creating an API defines its structure and makes it available in the portfolio for management and operations.
+
+=== Register an API Manually
+
+When you register an API manually, you provide a specification file that defines the API structure, including endpoints, operations, and data types.
+
+. In the navigation pane, select *APIs*.
+. Click *Add API*.
+. Select *Register manually*.
+. Enter a name for the API.
+. Select the API type.
+. Upload the specification file.
+. Click *Create*.
+
+Omni supports multiple API types and specification formats:
+
+* REST APIs (OAS, RAML)
+* gRPC APIs (Proto files)
+* Async APIs (AsyncAPI specification)
+
+== View API Details
+
+After creating or selecting an API, Omni displays its details as a service with multiple views that expose its structure, runtime state, and governance status.
+
+The API view is organized into tabs:
+
+* *Overview* – Displays API structure and metadata
+* *Instances* – Lists and manages API instances
+* *Monitoring* – Displays performance metrics
+* *Policies* – Displays applied policies
+* *Conformance Report* – Displays governance status
+* *Versions* – Displays available API versions
+
+NOTE: Monitoring, policies, and conformance details are managed in their respective sections.
+
+=== Overview Tab
+
+The *Overview* tab displays information derived from the API specification.
+
+Depending on the API type, this includes:
+
+* Endpoints or resources defined in the API
+* Available methods (such as GET, POST, PUT, and DELETE)
+* Request and response details
+* Parameters and headers
+* Example requests and responses
+* Data types and schemas
+* Security definitions
+
+This view reflects the structure and behavior defined in the uploaded specification.
+
+== Create and Manage API Instances
+
+API instances represent concrete deployments or runtime configurations of an API across environments or providers.
+
+Use the *Instances* tab to:
+
+* View existing instances
+* Create new instances
+* Manage or remove instances
+
+Each instance corresponds to a specific deployment or configuration of the API.
+
+Instances enable you to apply runtime-specific configurations and interact with APIs across different environments.
+
+API instances enable you to manage runtime behavior and interact with APIs within the unified Omni experience.
+
+== See Also
+
+* xref:omni-add-services-to-portfolio.adoc[]
+* xref:omni-register-services-manually.adoc[]
+* xref:omni-connect-providers-to-add-services.adoc[]
+* xref:omni-view-service-details.adoc[]
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