Product placement
n8n (acts: it is used to build an AI Agentic RAG system, its interface is operated, a visible result comes from it; removing it would change what happens in the video), Supabase (acts: it is used as a vector database and for storing data, its interface is operated, a visible result comes from it; removing it would change what happens in the video), OpenAI (acts: it is used for embeddings and as a chat model; removing it would change what happens in the video)