⚡ Live Sandbox: AI Dev Tool: Bun Hono TypeSafe Boilerplate

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```python
# AI Dev Tool: FastAPI Pydantic v2 Micro-SaaS Boilerplate
# =====================================================
# This is a production-ready FastAPI Pydantic v2 Micro-SaaS boilerplate
# with PostgreSQL Vector Search Extension and Hono Cloudflare Workers D1 Starter.

from fastapi import FastAPI, HTTPException
from fastapi.responses import JSONResponse
from pydantic import BaseModel
from typing import List, Optional
import psycopg2
import psycopg2.extras
from psycopg2 import Error
import json
from hono import Hono
from cloudflare import Cloudflare

# Define the FastAPI app
app = FastAPI()

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

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

# Define the PostgreSQL connection settings
POSTGRES_HOST = "localhost"
POSTGRES_DB = "mydb"
POSTGRES_USER = "myuser"
POSTGRES_PASSWORD = "mypassword"

# Define the Hono Cloudflare Workers D1 Starter settings
HONO_API_KEY = "my_hono_api_key"
HONO_API_SECRET

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