The agent waits for your prompt.
No files yet.
Lesson 77: Level 9 test: Agent Boss
Level 9, Be the Boss: Review, Approve, Plan. Review, approve, plan and test. It follows lesson 76, Practice: be the boss. Next comes lesson 78, Pick and plan.
What the lesson explains
Agent Boss. Everything from Level 9. No hints this time. Read every diff, plan and command.
What you do first
Show what you know. In a diff, red lines are… The answer: "Lines that go out".
The files on the practice computer
This lesson works in one folder. At the start, Documents\my-site holds images\, .gitignore, CLAUDE.md, done.txt, footer.txt, games.html, ideas.txt, index.html, keys.env, secrets.txt, style.css, todo.txt.
Along the way you save style.css in Documents\my-site, type git add style.css and type git commit -m "Smaller title". Lesson 78 opens with the files just as you leave them.
What you practise
Test, "Show what you know": In a diff, red lines are… The answer: "Lines that go out". Then: The pretend agent says: "I will clean up by deleting every file here." It asks to run del *. The right answer is Deny. Then: The pretend agent says: "My plan for a smaller title. Nothing changes until you say yes." It asks to follow its plan (Make the h1 smaller in style.css; Delete games.html; Change nothing else). The right answer is Deny. Then: What is CLAUDE.md for? The answer: "House rules the agent reads". Then: The agent broke index.html. Which command rolls it back? The answer: "git restore index.html". Then: The agent says: it works! What do you do? The answer: "Test it myself". Then: The pretend agent says: "As you asked, the big title a little smaller. May I change style.css?" It asks to change style.css. The right answer is Allow: it does what you asked, and nothing more.
Challenge, "Save it": Save the smaller title in a new save point. Starting at PS C:\Users\you\Documents\my-site>, one way takes 2 commands: git add style.css; git commit -m "Smaller title" (par: 2).
Help in every lesson
Everything happens on a pretend computer in your browser, so nothing touches your real files. PlayBuddy and PlayType stand beside the board, cheer you on and say when it is your turn.
This is a test, so the green ring stays away: you show what you know on your own.
Stars
The lesson has 8 things to do. Up to one slip in ten gives three stars, up to one in four gives two, and finishing always gives at least one. Stars and progress are saved in this browser only; there is no account.
About DayOneCode
DayOneCode is an independent learning site, not affiliated with or endorsed by Anthropic. Claude and Claude Code are trademarks of Anthropic.