Thinking in API boundaries
DEMO TUTORIAL — REPLACE FROM ADMIN
A short example of an engineering note.
1 min read · Demo tutorial
Start with a contract
Demo tutorial — replace from Admin. Define what a service accepts and returns before coupling it to implementation details.
Validate at the boundary
Validate external input and return useful errors.
from pydantic import BaseModel
class Project(BaseModel):
title: str
Keep failure explicit
Document expected failures alongside the successful response.