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The Agent Loop cover

The Agent Loop

A field guide to ReAct, Reflexion, and why agentic development is error-correction, not magic.

10 pages · 7 chapters · PDF + web

A practitioner read of the two papers that named the agent loop (ReAct 2022, Reflexion 2023): the anatomy of reason-act-observe, why the Observation (not the model) is the hero, the failure modes nobody writes about, and the five disciplines of a loop that earns its answers. Companion to the film In the Loop.

What's inside

  1. The Shape Under the Hype
  2. Anatomy of the Loop
  3. The Loop Learns
  4. When the Loop Lies Quietly
  5. Building a Loop That Earns
  6. Security & Evaluation
  7. What an Architect Keeps
  8. Glossary

Read the companion essay to this guide: on the blog ›