2. Introduction
3. 1. Introduction
   1. 1.1. What are AI agents, and why Rust?
   2. 1.2. Who is this book for?
   3. 1.3. How to use this book
5. The Playbook
6. 2. Make your first API call
7. 3. RAG
8. 4. Tool calling
9. 5. Memory
10. 6. Model routing
11. 7. Dynamic model creation
12. 8. Multi-agent systems
13. 9. Observability