SERVICES
│ System Design
The technique of "checking for yourself" the system you built
Reach a state where you can check for yourself whether the system you had AI build really works. Even without specialized testing knowledge, internalize a verification template that lets you judge "it's OK if this works" for operations.
─ ARTICLE COVER
System Design Skills ／ System Design
§I ─ POSITION
A hands-on course linked with the "run a simple system yourself" module of Claude Code training. The final piece for the field to operate a system without relying on outsourcing.
§II ─ TAKEAWAYS
Exhaustively surface the operational happy paths and exception paths
Judge the gap between "it worked" and "it's usable in operations"
Hold a procedure to complete verification entirely on your own
Record the verification results and tie them to recurrence prevention
§III ─ EXCERPT
¶ 01
Having Claude build a system and seeing a screen appear is no more than "it worked." A state usable in operations is one where the right result comes back for every anticipated input, and the behavior on error is also acceptable. Verification is the work of closing this gap.
¶ 02
For a single feature, verify behavior through four lenses.
¶ 03
Hold the procedure as a template so anyone can verify at the same quality.
| Step | What you do | OUTPUT |
|---|---|---|
| 1. Surface | Enumerate the anticipated input/operation patterns | Checklist of items |
| 2. Prepare test data | Prepare data for both happy paths and exception paths | A set of test data |
| 3. Execute | Execute one item at a time and record the result | Execution record |
| 4. Judge | Judge whether it's OK or NG for operations | Pass/fail list + fix list |
¶ 04
Each step of verification is work Claude is good at. Just ask "list 10 items I should check for this feature" or "prepare 5 kinds of exception-path test data" and a first draft is made. After that, select with the field's intuition and execute.
§∞ ─ DOWNLOAD
─ EXERCISE
Using a simple system you actually built with Claude Code as material, experience one cycle from surfacing verification items → executing → judging → requesting fixes.
Lecture slides
Every slide of the course
Cheat sheet
Quick reference for the field
Exercises
With answers and grading
Advanced / test
Hands-on plus rubric
INCLUDED PDFS ─ 6files
§IV ─ RELATED