Why AI Agents Need Verifiable Evidence: Building an MCP-Native Retrieval Engine with PostgreSQL
This story is from 2026-09-18. It is preserved in the archive; the latest stories are on the live feed.
Why standard RAG fails agentic workflows, and how we built Knowledge Fabric using PostgreSQL, pgvector, and FastMCP. Most Retrieval-Augmented Generation (RAG) setups treat context retrieval as a simple black box: prompt in, cosine similarity ranking, top-k text dump out. In conversational chatbots,…
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- 2026-09-18 04:59 · DEV Community — AI
Why AI Agents Need Verifiable Evidence: Building an MCP-Native Retrieval Engine with PostgreSQL