Source-grounded construction AI

Ask the site question first.

Site Assistant is being built around the interaction interface: ask a question, add project context if needed and get a clear answer with the source trail underneath.

Morning prototype

What works today

This is a working retrieval prototype. Questions are sent to the VPS API, which searches the ingested source corpus and returns cited evidence.

Active backend

Active stack

FastAPI calls a LangGraph workflow, which routes safe construction questions into a Haystack RAG pipeline over Postgres + pgvector with citations and answer checks.

Assistant interface

Ask about a detail, standard or document.

Prototype

Try a question: “Do I need to follow the manufacturer detail if the building control drawing does not show it?”