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The CAPIF APIs are generated from the OpenAPI specifications provided by 3GPP. The generate.sh script downloads the specifications from 3GPP, fixes them and then generates the APIs. While these files are checked into the repo, they can be re-generated using generate.sh. For details on running generate.sh, please see the sme/servicemanager/README.md. The specifications are downloaded from the following site; https://www.3gpp.org/ftp/Specs/archive/29_series. To see the APIs in swagger format, see the following link; https://github.com/jdegre/5GC_APIs/tree/Rel-17#common-api-framework-capif.
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