Based on my understanding of your scenario.
1.There is no direct web-crawling native mechanism in AI Search at this time.
2.That error message is most likely because the vectorizer in the index has managed identity enabled and the Azure portal needs the keys.
You may try navigating to> the index vector configuration and switch for keys > to leverage from the portal.
3.On making the web data source plugin from Azure AI Studio available for broader use - As I understand, currently, this functionality may not be planned directly in AI Search.
I'll post back if I have more updates.
I have relayed this feedback internally to our product team.
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