---
name: "tech-rag-metadata-key-drift"
title: "RAG metadata key drift"
description: "Inconsistent metadata keys break filters between ingest and query"
type: "tech"
category: "rag"
tags: ["tech", "llm-agents", "rag"]
related: ["[[tech-rag-toc-pollution]]", "[[tech-qdrant-config-at-create]]"]
---
If ingest writes `source_url` and query filters `url`, retrieval silently degrades.

Lock a schema; test filters. Related: [[tech-rag-toc-pollution]], [[tech-qdrant-config-at-create]].