⚡ Live Sandbox: AI Dev Tool: FastAPI Pydantic v2 MicroSaaS

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```python
# AI Dev Tool: Apex - Cloudflare Worker Hono API Template
# Description: A production-ready starter boilerplate for building scalable and secure APIs with Cloudflare Workers and Hono.

import os
import json
from typing import Dict, List
from pydantic import BaseModel
from hono import Hono
from fastapi import FastAPI, HTTPException
from fastapi.responses import JSONResponse
from fastapi.requests import Request
from fastapi.middleware.cors import CORSMiddleware

# Initialize the Hono instance
hono = Hono()

# Define the FastAPI application
app = FastAPI(
    title="Apex - Cloudflare Worker Hono API Template",
    description="A production-ready starter boilerplate for building scalable and secure APIs with Cloudflare Workers and Hono.",
    version="1.0.0",
)

# Enable CORS middleware
app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"],
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

# Define a Pydantic model for the API request body
class RequestBody(BaseModel):
    """The request body model."""
    data: Dict[str, str]

# Define a Pydantic

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