Red Hat Connect exposes a REST interface. The interface supports a number of endpoints which can be used to automate the work of keeping your container images up to date. Official documentation for the Connect API can be found here.
In order to use the API, you need to use Red Hat Connect API keys. The keys will need to be included in the request as shown below:
curl -X GET \
"https://catalog.redhat.com/api/containers/v1/projects/certification/pid/ospid-00000000-0000-0000-0000-00000000" \
-H "X-API-KEY: [api key]"
The legacy Red Hat Connect API, which is located here, will be deprecated on July 10th, 2021 and no longer be available for use. To assist with migration, the migration assistance page maps functionality from old endpoints to new ones.