AI agents aren't confidently wrong because of bad context — they're wrong because of bad data engineering

You spend weeks tuning an AI chatbot. Answers are accurate. Stakeholders sign off, and you ship it. Three months later, the system is confidently wrong about a third of what users ask. Nobody changed the model, and nobody touched the prompts. The world moved, pricing changed, a policy updated, a product spec shipped a new version, and the underlying knowledge store didn't move with it.This is not a hypothetical. It's one of the most common production failure modes in enterprise AI right now, and most data engineering teams don't have the right tooling to catch it, regardless of how the AI system retrieves the data.The failure that doesn't look like a failure An AI application doesn't care whether it's retrieving from a vector store, a document index, or an API call. Whatever the mechanism,