⚡ Live Sandbox: AI Dev Tool: AGENTSmd AINative SaaS (k7xl)

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

from fastapi import FastAPI, HTTPException
from pydantic import BaseModel, Field
from typing import List, Optional
from sqlalchemy import create_engine, Column, Integer, String
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import sessionmaker

# Define the database connection
SQLALCHEMY_DATABASE_URL = "postgresql://user:password@localhost/dbname"

# Create a database engine
engine = create_engine(SQLALCHEMY_DATABASE_URL)

# Create a session maker
SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)

# Create a base class for models
Base = declarative_base()

# Define a model for users
class User(Base):
    """User model"""
    __tablename__ = "users"
    id = Column(Integer, primary_key=True)
    name = Column(String)
    email = Column(String, unique=True)

# Create the database tables
Base.metadata.create_all(engine)

# Define a Pydantic model for user requests
class UserRequest(BaseModel):
    """

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