Tidewater Books practice kit

shop-rules.txt holds the eight rules of a made-up bookshop. questions.csv has 20 test questions for the shop's question agent, each with the words a right answer must say and the words it must not say. answers.csv has the agent's answers from last week, with how many tokens each one used. prices.csv has three models' prices in US dollars per million tokens.

The prices were read on Anthropic's pricing page on 10 November 2026: https://platform.claude.com/docs/en/about-claude/pricing
Prices change. Check that page before you trust these numbers, and update prices.csv if they differ.

Use it with course 3, lesson 6. Open this folder in the Code tab and paste the build prompt from the lesson. You don't need an API key: the grader checks last week's answers, so nothing here costs money beyond your Claude plan.
