WooCommerce Webhooks

When to Use This Skill

• Setting up WooCommerce webhook handlers
• Debugging signature verification failures
• Understanding WooCommerce event types and payloads
• Handling order, product, or customer events
• Integrating with WooCommerce stores

Essential Code (USE THIS)

WooCommerce Signature Verification (JavaScript)

const crypto = require('crypto');

function verifyWooCommerceWebhook(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;
  }
}

Express Webhook Handler

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

// CRITICAL: Use raw body for signature verification
app.use('/webhooks/woocommerce', express.raw({ type: 'application/json' }));

app.post('/webhooks/woocommerce', (req, res) => {
  const signature = req.headers['x-wc-webhook-signature'];
  const secret = process.env.WOOCOMMERCE_WEBHOOK_SECRET;
  
  if (!verifyWooCommerceWebhook(req.body, signature, secret)) {
    return res.status(400).send('Invalid signature');
  }
  
  const payload = JSON.parse(req.body);
  const topic = req.headers['x-wc-webhook-topic'];
  
  console.log(`Received ${topic} event:`, payload.id);
  res.status(200).send('OK');
});

Next.js API Route (App Router)

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

export async function POST(request: NextRequest) {
  const signature = request.headers.get('x-wc-webhook-signature');
  const secret = process.env.WOOCOMMERCE_WEBHOOK_SECRET;
  
  const rawBody = await request.text();
  
  if (!verifyWooCommerceWebhook(rawBody, signature, secret)) {
    return new Response('Invalid signature', { status: 400 });
  }
  
  const payload = JSON.parse(rawBody);
  const topic = request.headers.get('x-wc-webhook-topic');
  
  console.log(`Received ${topic} event:`, payload.id);
  return new Response('OK', { status: 200 });
}

FastAPI Handler

import hmac
import hashlib
import base64
from fastapi import FastAPI, Request, HTTPException

app = FastAPI()

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

@app.post('/webhooks/woocommerce')
async def handle_webhook(request: Request):
    raw_body = await request.body()
    signature = request.headers.get('x-wc-webhook-signature')
    secret = os.getenv('WOOCOMMERCE_WEBHOOK_SECRET')
    
    if not verify_woocommerce_webhook(raw_body, signature, secret):
        raise HTTPException(status_code=400, detail='Invalid signature')
    
    payload = await request.json()
    topic = request.headers.get('x-wc-webhook-topic')
    
    print(f"Received {topic} event: {payload.get('id')}")
    return {'status': 'success'}

Common Event Types

Environment Variables

WOOCOMMERCE_WEBHOOK_SECRET=your_webhook_secret_key

Headers Reference

WooCommerce webhooks include these headers:

• X-WC-Webhook-Signature - HMAC SHA256 signature (base64)
• X-WC-Webhook-Topic - Event type (e.g., “order.created”)
• X-WC-Webhook-Resource - Resource type (e.g., “order”)
• X-WC-Webhook-Event - Action (e.g., “created”)
• X-WC-Webhook-Source - Store URL
• X-WC-Webhook-ID - Webhook ID
• X-WC-Webhook-Delivery-ID - Unique delivery ID

Local Development

For local webhook testing, install Hookdeck CLI:

Then start the tunnel:

npx hookdeck-cli listen 3000 woocommerce --path /webhooks/woocommerce

No account required. Provides local tunnel + web UI for inspecting requests.

Reference Materials

• overview.md - What WooCommerce webhooks are, common event types
• setup.md - Configure webhooks in WooCommerce admin, get signing secret
• verification.md - Signature verification details and gotchas
• examples/ - Complete runnable examples per framework

Recommended: webhook-handler-patterns

For production-ready webhook handlers, also install the webhook-handler-patterns skill for:

• Handler sequence
• Idempotency
• Error handling
• Retry logic

Related Skills

• stripe-webhooks - Stripe payment webhooks with HMAC verification
• shopify-webhooks - Shopify store webhooks with HMAC verification
• github-webhooks - GitHub repository webhooks
• paddle-webhooks - Paddle billing webhooks
• webhook-handler-patterns - Idempotency, error handling, retry logic
• hookdeck-event-gateway - Production webhook infrastructure