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If you use a shared/deployed instance of this application (e.g., hosted on a public server), note that it has no authentication or user isolation — any document uploaded is public and can be accessed by anyone who has the URL. All uploaded PDFs are ingested into a single shared Pinecone index, and every user can query across all documents.

If you run this application locally with your own Pinecone index and API keys, there are no such concerns — only you have access to your index.

Do not upload sensitive, confidential, or private documents to a shared/public instance unless you intend them to be publicly readable.