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Three courses on production agent engineering, paired with a real ecosystem of running agents.

A Project, a Quickstart, and a Foundation course, each one teaches a pattern that already runs in production.

Build the system, not the toy. Every course ships a forkable repo and points at the live product it powers.

The courses

One live now, two shipping soon. Status reflects course reality; this page is the source of truth.

Project🟢 Live

Domain-Specialist Multi-Agent with Per-Agent RAG

Build a supervisor that routes each question to a domain specialist, and give every specialist its own RAG index. The architecture behind the CentenarianOS multi-domain coach.

LangGraphLangSmithpgvectorLangSmith DeploymentDrizzle
Quickstart🟡 Coming soon

Durable HITL with a Postgres Checkpointer

Your human-in-the-loop agent silently loses its state when the worker restarts. Here's the 10-line fix, a Postgres checkpointer that survives the crash.

LangGraphPostgresLangSmith

Ships ~June 10, 2026

Foundation🟡 Coming soon

Reflection-Loop Reliability

An agent's first answer is usually its worst. Reflection loops let it critique and revise its own output, and let you measure the reliability gain instead of hoping for one.

LangGraphLangSmithLangSmith DeploymentPythonTypeScript

Ships ~late July 2026

How these courses fit the WitUS ecosystem

These aren't demos built for a syllabus. Each course extracts the pattern from a product that's already serving real users, so the "production" in "production agent engineering" is literal.

Want to talk about agent engineering, or hire for it?

The courses are free and the repos are forkable. If you're hiring for developer education or agent work, or you just want to compare notes, reach out.