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```python
# AI Dev Tool: FastAPI Pydantic v2 Micro-SaaS Boilerplate
# Description: A production-ready starter boilerplate for building micro-SaaS applications using FastAPI and Pydantic v2.

from fastapi import FastAPI, HTTPException
from pydantic import BaseModel, validator
from typing import Optional
from bun import Database
from hono import Hono

app = FastAPI()

# Initialize Hono Cloudflare Workers D1 Starter
hono = Hono()

# Initialize Bun Hono Type-Safe Boilerplate
db = Database()

# Define Pydantic model for user data
class User(BaseModel):
    id: int
    name: str
    email: str

@validator('email')
    def validate_email(cls, v):
        if '@' not in v:
            raise ValueError('Invalid email')
        return v

# Define API endpoint for creating new users
@app.post("/users/")
async def create_user(user: User):
    try:
        # Use Bun Hono Type-Safe Boilerplate to interact with the database
        db_user = await db.users.insert_one(user.dict())
        return db_user
    except Exception as e:
        raise HTTPException(status_code=500,

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