File Q&A: build an evidence-first document assistant →
Turn a document question into ranked source passages and an inspectable citation trail.
AI in practice: from product features to code
Three runnable, dependency-free JavaScript tutorials connecting document assistants and tool use to engineering foundations.
Document extraction: JSON shape is not factual correctness →
Build a validation boundary between a candidate extraction and a downstream business workflow.
Tool-using assistants: validate, execute and trace →
Implement the execution boundary that turns a proposed tool call into a bounded, inspectable action.