item_keeper/main.py

from fastapi import FastAPI

app = FastAPI()

@app.get("/")
def read_root():
    return {"message": "Hello, World!"}

@app.get("/items")
def get_items():
    return {"items": ["item1", "item2", "item3"]}

@app.get("/item")
def get_items():
    return "item1"