⚡ Live Sandbox: AI Dev Tool: FastAPI Pydantic v2 (flk2)

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```python
# AI Dev Tool: FastAPI Pydantic v2 Micro-SaaS Boilerplate
# ================================================
# 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, Field
from typing import Optional
import cloudflareworkers

# Define the application
app = FastAPI()

# Define the database model
class User(BaseModel):
    """User database model"""
    id: int = Field(..., description="User ID")
    name: str = Field(..., description="User name")
    email: str = Field(..., description="User email")

# Define the API endpoint for creating a new user
@app.post("/users/")
async def create_user(user: User):
    """Create a new user"""
    try:
        # Save the user to the database
        # For demonstration purposes, we'll use a mock database
        mock_database = {}
        mock_database[user.id] = user
        return {"message": "User created successfully"}
    except Exception as e:
        # Handle any errors that occur during user creation
        raise HTTPException(status_code=500, detail

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