AI agent evaluation, observability, and education

Hi šŸ‘‹Iā€™m Josh Reini

I build tools, frameworks, and courses that help developers see what their agents are doing, measure whether they are working, and improve them before users find the failure modes.

Test your agent What is your agent's GPA? Learn with me
Read Technical writing

Guides and essays on AI agents, observability, RAG, evaluation, and ML quality.

 Watch Talks

Recorded sessions on trustworthy data agents, hallucinations, RAG, and observability.

 Learn Courses

Hands-on AI courses across DeepLearning.AI, Coursera, LinkedIn Learning, and Stanford.

 Build Projects

Open-source tools and experiments, from AI evaluation infrastructure to civic calculators.