RAG problems start upstream.

Everything that happens to your documents before retrieval matters. Parsing, layout detection, chunking strategy, metadata extraction, permissions tagging. It all compounds downstream.

Every team building RAG systems eventually discovers this: their retrieval isn't broken, their document processing is. Tables mangled during parsing. Chunks split mid-sentence. Document structure flattened. Metadata stripped before it reaches the vector store.

By the time you're debugging hallucinations, the damage was done upstream. The broken output exists right now, invisible, waiting to surface in production.

We built VectorFlow because most teams don't discover these problems until they're deep in a conversation getting weird responses. See what happens to your documents before you commit.