LangGraph

What: An explicit graph: route, retrieve, draft, critique, answer. Each node has one job.
Why: Hidden agents are hard to learn from. A visible graph is the lesson.
What you are seeing: Flow on the left lights as each step finishes. AWS Architecture on the right is that step’s box — click the title for the stacked twin. Click a finished node for that step’s output.

Static GitHub Pages demo — sample questions replay recorded runs with paced animations. Vector DB hashes in this tab and does not call localhost. Clone the repo and make dev for live labs.

Flow

AWS Architecture

START
accept the request
END
return the answer

Node output

Run the graph — nodes light as each step finishes. Click a finished node to inspect it.