⚡ Live Sandbox: AI Dev Tool: PostgreSQL Vector Search (cxvh)

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```python
# AI Dev Tool: Edge Function API Gateway using Cloudflare Workers, Hono, and FastAPI
# ==============================================================================
# This is a production-ready developer code asset for building edge functions
# with Cloudflare Workers, Hono, and FastAPI. It provides a starter boilerplate
# for creating high-performance, scalable APIs.

import os
import json
from fastapi import FastAPI, HTTPException
from fastapi.responses import JSONResponse
from pydantic import BaseModel
from typing import Optional
from cloudflare import Cloudflare

# Initialize the FastAPI app
app = FastAPI()

# Define a Pydantic model for the API request body
class RequestBody(BaseModel):
    """Request body model"""
    name: str
    description: Optional[str]

# Define a Cloudflare Worker using Hono
worker = Cloudflare(
    account_id=os.environ.get("CLOUDFLARE_ACCOUNT_ID"),
    api_token=os.environ.get("CLOUDFLARE_API_TOKEN")
)

# Define an edge function using Rust WebAssembly
wasm_module = """
    (module
        (func $hello (import "env" "hello") (param $name (string)))
        (func (export "hello") (param $name

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