Upserting Paywall Content to Vector Database

Hi Community.
I am planning to use an AI chatbot on my ghost blog to replace the search function.

Therefore, I would like to index my content in a vector database like pinecone or qdrant or eleasticsearch.

My question is, whether anyone has already experiences / best practices on how to upsert or respond to queries about paywall content.

In other words: What is the best way to prevent the bot to answer with paywall content, but refer to the paid article instead, if the information is available in there.