Build Lucy’s first useful agent

Start with a model call, validate shop tools, construct a bounded loop and keep the shop's state durable in SQLite.

Read and practice

• Chapter 1: What a model call is: tokens, probabilities and Lucy's first brief (draft chapter, two practice units)
• Chapter 2: Structured output and typed tools: what a schema guarantees (draft chapter, two practice units)
• Chapter 3: Build the model and tool loop (draft chapter, two practice units)
• Chapter 4: Build durable state with SQLite (draft chapter, two practice units)

Exercises · Worked solutions · Educator materials