Lessons

Work through the sections in order. Each one is a self-contained lesson with a goal, runnable code, and a reference implementation under examples/.

Hello World

Anatomy of a Response

Tokens & the Context Window

Sampling Parameters (Seeing the Effect)

Reasoning / "Thinking" Models

Handling & Validating Responses (Structured Output)

Blocking vs Streaming

Robustness: Errors, Retries, Rate Limits, Timeouts

Observability & Logging

Cost, Pricing & Prompt Caching

Prompt Engineering Fundamentals

Conversation State & Memory

Tool / Function Calling

The Tool-Use Loop

Sandboxing I: Why Isolate, and Portable Limits

Sandboxing II: Containers, Postgres & Production Isolation

Model Context Protocol (MCP)

Embeddings

Retrieval-Augmented Generation (RAG)

Security & Guardrails

Skills / Skill Injection

Agents

Evaluation & Testing

Capstone

Last modified June 16, 2026: Add Hugo + Docsy site (FrenchForet) for GitHub Pages (64afc7b)