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```python
# AI Dev Tool: FastAPI Pydantic v2 Micro-SaaS Boilerplate
# =====================================================
# This is a production-ready starter boilerplate for building micro-SaaS applications
# using FastAPI, Pydantic v2, and Cloudflare Workers.

from fastapi import FastAPI, HTTPException
from pydantic import BaseModel
from typing import List, Optional
import uvicorn
import json

# Define the application
app = FastAPI()

# Define the database model
class Item(BaseModel):
    """Item model"""
    id: int
    name: str
    description: Optional[str] = None

# Define the in-memory database
items: List[Item] = [
    {"id": 1, "name": "Item 1"},
    {"id": 2, "name": "Item 2"},
]

# Define the API endpoints
@app.get("/items/")
async def read_items():
    """Read all items"""
    return items

@app.get("/items/{item_id}")
async def read_item(item_id: int):
    """Read an item by ID"""
    for item in items:
        if item["id"] == item_id:
            return item
    raise HTTPException(status_code=

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