Paragon. Walks through the production RAG permission problem and compares tool-calling, namespaces, ACL tables and relationship-based permissions. That directly supports the article's core rule: retrieval must only return sources the current user is allowed to see, and source-system permissions cannot be treated as an afterthought.
This is a vendor tutorial, so do not copy the graph recommendation blindly. Use it to understand the tradeoffs, then choose the simplest permission model that matches the source systems, sensitivity level, tenancy model and operations capacity.
Evaluate practical access-control patterns for company knowledge RAG before indexing sensitive internal documents.
Basic RAG architecture, vector databases, OAuth or integration-provider permissions, and backend authorization concepts.
Last reviewed: May 18, 2026
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