Calls patients 72 hours after discharge — and escalates on hardcoded clinical rules the AI is never allowed to touch.

A real phone number that answers, books an appointment end to end, and hangs up.

Citation-backed answers over 25,000 SEC filings, with the guardrails that make them trustworthy.

Retrieval over SEC filings with no embeddings and no vector database at all.

Turning natural-language questions into database filters before search ever runs.

The foundations — single and multi-document question answering with LangChain.

Hybrid retrieval across live FDA data, PubMed and a local index — hardened against adversarial input.

Seven specialised agents that take a spreadsheet and a plain-English question to a boardroom answer.

A six-node agentic loop that grades its own retrievals and checks its own answers.

A multi-agent social simulation of how a layoff announcement actually propagates.

Flags struggling students three to five weeks earlier — and explains why for every single one.

Optimising for recall, because a missed churner costs more than a wasted retention offer.

Fourteen architectures trained to find out what actually moves validation accuracy.

Regression on 1,338 records, where one binary feature dominates everything else.