ArchitectAI is a chat-driven whiteboard for software architecture. You write a plain request — stack preferences, constraints, product goal — and it returns a structured blueprint, then renders that blueprint as diagram frames on an Excalidraw canvas.

• System diagrams — services, data stores, auth, and how requests move between them.

• Flow and sequence views — upload pipelines, job runners, webhook paths, UI → API → DB.

• Build chapters — ordered steps with concrete commands next to the matching diagram.