const crypto = require('crypto');

function verifyHookdeckSignature(rawBody, signature, secret) {
  if (!signature || !secret) return false;

  const hash = crypto
    .createHmac('sha256', secret)
    .update(rawBody)
    .digest('base64');

  try {
    return crypto.timingSafeEqual(Buffer.from(signature), Buffer.from(hash));
  } catch {
    return false;
  }
}

import hmac
import hashlib
import base64

def verify_hookdeck_signature(raw_body: bytes, signature: str, secret: str) -> bool:
    if not signature or not secret:
        return False
    expected = base64.b64encode(
        hmac.new(secret.encode(), raw_body, hashlib.sha256).digest()
    ).decode()
    return hmac.compare_digest(signature, expected)

# Required for signature verification
# Get from Hookdeck Dashboard → Destinations → your destination → Webhook Secret
HOOKDECK_WEBHOOK_SECRET=your_webhook_secret_from_hookdeck_dashboard

const express = require('express');
const app = express();

// IMPORTANT: Use express.raw() for signature verification
app.post('/webhooks',
  express.raw({ type: 'application/json' }),
  (req, res) => {
    const signature = req.headers['x-hookdeck-signature'];

    if (!verifyHookdeckSignature(req.body, signature, process.env.HOOKDECK_WEBHOOK_SECRET)) {
      console.error('Hookdeck signature verification failed');
      return res.status(401).send('Invalid signature');
    }

    // Parse payload after verification
    const payload = JSON.parse(req.body.toString());

    // Handle the event (payload structure depends on original provider)
    console.log('Event received:', payload.type || payload.topic || 'unknown');

    // Return status code — Hookdeck retries on non-2xx
    res.json({ received: true });
  }
);

import { NextRequest, NextResponse } from 'next/server';
import crypto from 'crypto';

function verifyHookdeckSignature(body: string, signature: string | null, secret: string): boolean {
  if (!signature || !secret) return false;
  const hash = crypto.createHmac('sha256', secret).update(body).digest('base64');
  try {
    return crypto.timingSafeEqual(Buffer.from(signature), Buffer.from(hash));
  } catch {
    return false;
  }
}

export async function POST(request: NextRequest) {
  const body = await request.text();
  const signature = request.headers.get('x-hookdeck-signature');

  if (!verifyHookdeckSignature(body, signature, process.env.HOOKDECK_WEBHOOK_SECRET!)) {
    return NextResponse.json({ error: 'Invalid signature' }, { status: 401 });
  }

  const payload = JSON.parse(body);
  console.log('Event received:', payload.type || payload.topic || 'unknown');

  return NextResponse.json({ received: true });
}

import os
import json
from fastapi import FastAPI, Request, HTTPException

app = FastAPI()

@app.post("/webhooks")
async def webhook(request: Request):
    raw_body = await request.body()
    signature = request.headers.get("x-hookdeck-signature")

    if not verify_hookdeck_signature(raw_body, signature, os.environ["HOOKDECK_WEBHOOK_SECRET"]):
        raise HTTPException(status_code=401, detail="Invalid signature")

    payload = json.loads(raw_body)
    print(f"Event received: {payload.get('type', 'unknown')}")

    return {"received": True}

# Install Hookdeck CLI
brew install hookdeck/hookdeck/hookdeck
# Or: npm install -g hookdeck-cli

# Start tunnel to your local server (no account needed)
hookdeck listen 3000 --path /webhooks

// Generated with: hookdeck-event-gateway-webhooks skill
// https://github.com/hookdeck/webhook-skills