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Among CAPIF's key features are the following.

  • Register/deregister APIs
  • Publishing APIs
  • Onboarding/offboarding API invoker
  • Discovery APIs
  • Register/deregister APIs
  • CAPIF events subscription/notification
  • Entity authentication/authorization
  • Support for 3rd party domains i.e., allow 3rd party API providers to leverage the CAPIF framework
  • Support interconnection between two CAPIF providers

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Service Manager also implements 3GPP TS 29.222 V17.5.0 Common API Framework for 3GPP Northbound APIs. Service Manager uses a subset of CAPIF to provide the following APIs.

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When you call the Publish Service API of Service Manager, the requests body contains the IPv4 address and port of the API Publishing Function. In the response body, these values are replaced by the IP v4 Address and port of the Kong data plane. This allows us to use Kong as a reverse proxy. Instead of calling the Publishing service directly, our API request is proxied through Kong.


CAPIF core function APIs implemented by Service Manager

The table below lists the CAPIF Core Function APIs that are currently implemented:


Service Name

Service Operations

Operation Semantics

Consumer(s)

CAPIF_API_Provider_Management_API

Register_API_Provider

POST /registrations

API Management Function

Update_API_Provider

PUT /registrations/{registrationId}

API Management Function

Deregister_API_Provider

DELETE /registrations/{registrationId}

API Management Function

CAPIF_Publish_Service_API

Publish_Service_API

POST /{apfId}//service-apis

API Publishing Function, CAPIF core function

Unpublish_Service_API

DELETE /{apfId/service-apis/{serviceApiId}

API Publishing Function, CAPIF core function

Update_Service_API

PUT /{apfId/service-apis/{serviceApiId}

API Publishing Function, CAPIF core function

Get_Service_API

GET /{apfId}/service-apis

API Publishing Function, CAPIF core function

CAPIF_API_Invoker_Management_API

Onboard_API_Invoker

POST /onboardedInvokers

API Invoker

Offboard_API_Invoker

DELETE /onboardedInvokers/{onboardingId}

API Invoker




Update_API_Invoker_Details

PUT /onboardedInvokers/{onboardingId}

API Invoker




CAPIF_Discover_Service_API

Discover_Service_API

GET /allServiceAPIs

API Invoker, CAPIF core function