AI App Builder Course

Contents

1. How to use this book
2. Chapter 1. Defining tasks and instructing agents

   What it means to delegate work · Definition of done: deciding where "finished" is in advance · Four elements of a good task instruction · Define states beyond the ideal screen · Breaking work down: vertical slices · Point to an existing pattern · Getting a plan first · Five questions for reviewing a plan · Repository instruction files: how each tool reads them · What belongs in an instruction file · Features without settled rules: interviews and specifications · Context as a budget · Unattended execution

3. Chapter 2. The run-and-verify loop

   Where the app runs: browser, server and storage · Running locally: development servers and ports · Preparing an unfamiliar repository to run · A map of checking tools · Anatomy of an error message · Narrowing causes from failing output · Verification loops and enforcement · Check in the browser like a user · Distinguish claims from evidence · Start afresh when context gets tangled · Passing tests and useful tests · Tests that sometimes fail · Different results on your computer and elsewhere

4. Chapter 3. Version control and change review

   Git: a time machine with save points · Local history and remote repositories · diff: which two states are compared? · A diff review sequence and checklist · Changes that weaken checks · Small commits with one purpose · Branches and the pull request flow · Resolve conflicts by meaning · Choosing how to undo a change · Agent rewind features and Git · Recovering lost commits: reflog · Rewriting shared history · Running several agents at once

5. Chapter 4. Security and dependencies

   A secret is a house key · Environment variables and .env files · Values sent to browsers and values kept on servers · How secrets leak · Block leaks before committing · After a leak: replace the key first · Keep credentials narrow · Permission modes: different names, the same questions · Permission rules and sandboxes · Supply chains and lock files · Prompt injection: when reading becomes instruction · Minimize data exposure · Adding agents to automation

6. Chapter 5. Deployment and operations

   What deployment does · Preview and production · Sharing a preview · Environment variables differ by environment · Development servers are different from builds · Pre-deployment checks · Checks immediately after deployment · Logs and monitoring · Rollback: returning to the last known good version · Incident response order · Code returns, data does not · Release gradually · Operating constraints for small apps

7. Appendix A. Glossary
8. Appendix B. Self-check answers and explanations
9. Appendix C. Exam day guide
10. Appendix D. Reference documents