Skip to content

Free resources Pricing FAQ

Chapter 1Start coding with Claude
Chapter 2Checking and evaluations
Lesson 1A check that can fail
Lesson 2Write the evals first
Lesson 3A separate reviewer
Lesson 4Our own test behind a claim
Chapter 3Hooks
Chapter 4From idea to product
Chapter 5Skills and subagents
Chapter 6A secure setup
Chapter 7Many agents, one job

A check that can fail

Read
Break it on purpose
Task 1
Task 2
Make it fail on the wrong result
Task 3
Task 4
Video recap
Takeaway

Read

Break it on purpose

Log in to read this lesson. A free account opens the introductory chapter.

← Why a check earns trust only after you have seen it fail Pick the better test of a check →

Vision Pricing Contact Privacy