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```python
# AI Dev Tool: FastAPI Pydantic v2 Micro-SaaS Template
# Description: Production-ready FastAPI and Pydantic v2 template for building micro-SaaS applications

from fastapi import FastAPI, HTTPException
from pydantic import BaseModel
from typing import List, Optional
from supabase import create_client, Client

# Initialize FastAPI application
app = FastAPI()

# Initialize Supabase client
SUPABASE_URL = "https://your-supabase-url.supabase.co"
SUPABASE_KEY = "your-supabase-key"
SUPABASE_SECRET = "your-supabase-secret"
supabase: Client = create_client(SUPABASE_URL, SUPABASE_KEY)

# Define Pydantic models
class User(BaseModel):
    """User model"""
    id: int
    name: str
    email: str

class Item(BaseModel):
    """Item model"""
    id: int
    name: str
    description: str
    price: float

# Define API routes
@app.get("/users/")
async def read_users():
    """Read all users"""
    try:
        # Fetch users from Supabase
        data = supabase.from_("users").select("*")
        return data

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