How to Debug Webhooks Without Headaches: The Webhook Monitor Every Developer Needs
#webhooks#javascript#python#debugging
Filipi Youssef

Filipi Youssef @fyoussef

Joined:
May 27, 2025

How to Debug Webhooks Without Headaches: The Webhook Monitor Every Developer Needs

Publish Date: Jun 21
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Webhook Monitor

If you've ever worked with webhooks, you know that debugging these requests can be a real nightmare. Between setting up ngrok, analyzing server logs, and trying to understand why that integration isn't working, we lose precious hours that could be invested in actual code.

The Problem Every Developer Knows

Picture this scenario: you're integrating with an external API that sends webhooks to your system. Everything looks right in the code, but... nothing happens. The burning question:

"Is the data coming through? What's the format? Why isn't it working?"

Sound familiar? That's where Webhook Monitor comes in - a tool that changed my way of working with webhooks.

The Simple Solution That Works

Webhook Monitor solves this problem elegantly:

  1. Access the website
  2. Copy your unique URL (automatically generated)
  3. Configure it in your webhooks
  4. Watch the data arrive in real-time

That simple. No installation, no complicated configuration, no own server needed.

Real-World Use Cases

1. Testing Payment Integrations 

// Example: Setting up Stripe webhook
const stripe = require("stripe")("sk_test_...");

// Your Webhook Monitor URL
const webhookUrl = "https://webhookmonitor.online/webhook/abc123...";

// Now you can see exactly what Stripe is sending
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2. Debugging GitHub Webhooks 

# .github/workflows/webhook-test.yml
name: Test Webhook
on:
  push:
    branches: [main]

jobs:
  notify:
    runs-on: ubuntu-latest
    steps:
      - name: Send webhook
        run: |
          curl -X POST https://webhookmonitor.online/webhook/your-id \
            -H "Content-Type: application/json" \
            -d '{"event": "push", "branch": "${{ github.ref }}"}'
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3. Monitoring CRM Events 

import requests
import json

# Simulating a webhook from your CRM
webhook_data = {
    "event": "lead_created",
    "lead": {
        "id": 12345,
        "email": "user@example.com",
        "source": "website"
    },
    "timestamp": "2024-01-15T10:30:00Z"
}

# Sending to Webhook Monitor
response = requests.post(
    "https://webhookmonitor.online/webhook/your-unique-id",
    json=webhook_data,
    headers={"Content-Type": "application/json"}
)

print(f"Status: {response.status_code}")
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Advantages That Make the Difference

Real-Time

See data arrive instantly. No refresh, no delays.

Zero Configuration

No need to set up servers, ngrok, or any infrastructure.

Complete Analysis

See headers, body, HTTP method, timestamp - everything you need.

Free

Works without registration, no annoying limits for development.

Any Language

PHP, Python, Node.js, Go, Java - works with any stack.

Practical Usage Examples

Testing Webhook with cURL 

# Basic test
curl -X POST https://webhookmonitor.online/webhook/your-id \
  -H "Content-Type: application/json" \
  -d '{"test": "hello world"}'

# Test with custom headers
curl -X POST https://webhookmonitor.online/webhook/your-id \
  -H "Content-Type: application/json" \
  -H "X-Custom-Header: my-value" \
  -d '{
    "event": "order_completed",
    "order_id": 12345,
    "total": 99.99
  }'
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Integrating with Node.js 

const express = require("express");
const axios = require("axios");
const app = express();

app.use(express.json());

// Webhook Monitor URL
const WEBHOOK_MONITOR = "https://webhookmonitor.online/webhook/your-id";

app.post("/api/orders", async (req, res) => {
  const order = req.body;

  // Process order...

  // Send webhook for monitoring
  try {
    await axios.post(WEBHOOK_MONITOR, {
      event: "new_order",
      order: order,
      timestamp: new Date().toISOString(),
    });

    console.log("Webhook sent to monitor");
  } catch (error) {
    console.error("Error sending webhook:", error.message);
  }

  res.json({ success: true });
});

app.listen(3000);
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Testing with Python 

import requests
import json
from datetime import datetime

class WebhookTester:
    def __init__(self, monitor_url):
        self.monitor_url = monitor_url

    def send_test_event(self, event_type, data):
        payload = {
            "event": event_type,
            "data": data,
            "timestamp": datetime.now().isoformat(),
            "source": "webhook_tester"
        }

        try:
            response = requests.post(
                self.monitor_url,
                json=payload,
                headers={
                    "Content-Type": "application/json",
                    "User-Agent": "WebhookTester/1.0"
                }
            )

            print(f"Webhook sent: {response.status_code}")
            return response.status_code == 200

        except Exception as e:
            print(f"Error: {e}")
            return False

# Usage
tester = WebhookTester("https://webhookmonitor.online/webhook/your-id")

# Test different scenarios
tester.send_test_event("user_signup", {"user_id": 123, "email": "test@example.com"})
tester.send_test_event("payment_success", {"amount": 50.00, "currency": "USD"})
tester.send_test_event("error_occurred", {"error": "Database connection failed"})
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Advanced Use Cases

1. Testing Rate Limiting 

#!/bin/bash
# Script to test behavior with multiple requests

WEBHOOK_URL="https://webhookmonitor.online/webhook/your-id"

for i in {1..10}; do
  curl -X POST $WEBHOOK_URL \
    -H "Content-Type: application/json" \
    -d "{\"request_number\": $i, \"timestamp\": \"$(date -u +%Y-%m-%dT%H:%M:%SZ)\"}" &
done

wait
echo "All requests sent!"
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2. Simulating E-commerce Webhooks 

// E-commerce event simulator
const events = [
  { type: "cart_abandoned", data: { cart_id: "cart_123", items: 3 } },
  { type: "order_placed", data: { order_id: "ord_456", total: 199.99 } },
  {
    type: "payment_processed",
    data: { payment_id: "pay_789", status: "success" },
  },
  {
    type: "order_shipped",
    data: { tracking: "US123456789", carrier: "FedEx" },
  },
];

async function simulateEcommerceFlow() {
  const webhookUrl = "https://webhookmonitor.online/webhook/your-id";

  for (const event of events) {
    await fetch(webhookUrl, {
      method: "POST",
      headers: { "Content-Type": "application/json" },
      body: JSON.stringify({
        ...event,
        timestamp: new Date().toISOString(),
        user_id: "user_123",
      }),
    });

    // Wait 2 seconds between events
    await new Promise((resolve) => setTimeout(resolve, 2000));
  }
}

simulateEcommerceFlow();
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Pro Tips for Using Webhook Monitor

Tip 1: Organize Your Tests 

{
  "test_id": "integration_test_001",
  "environment": "development",
  "service": "payment_gateway",
  "event": "payment_completed",
  "data": {
    "amount": 100.0,
    "currency": "USD"
  }
}
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Tip 2: Use Headers for Context 

curl -X POST https://webhookmonitor.online/webhook/your-id \
  -H "X-Test-Case: user-registration" \
  -H "X-Environment: staging" \
  -H "X-Version: v2.1" \
  -d '{"user_id": 123}'
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Tip 3: Test Different Content-Types 

# JSON
curl -X POST https://webhookmonitor.online/webhook/your-id \
  -H "Content-Type: application/json" \
  -d '{"key": "value"}'

# Form data
curl -X POST https://webhookmonitor.online/webhook/your-id \
  -H "Content-Type: application/x-www-form-urlencoded" \
  -d 'key=value&another=data'

# XML
curl -X POST https://webhookmonitor.online/webhook/your-id \
  -H "Content-Type: application/xml" \
  -d '<payload><key>value</key></payload>'
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Comparison with Other Tools

Tool Setup Real-Time Free Limits
Webhook Monitor ✅ Zero config ✅ Yes ✅ Yes ✅ No dev limits
ngrok ❌ Install + config ✅ Yes ⚠️ Limited ❌ Temporary URLs
RequestBin ✅ Simple ⚠️ No ✅ Yes ❌ Expires in 48h
Webhook.site ✅ Simple ✅ Yes ⚠️ Limited ❌ Public

Conclusion

Webhook Monitor dramatically simplifies the webhook development and debugging process. No complex configuration, no installation, no headaches.

For developers who want to:

  • Test integrations quickly
  • Debug webhooks in real-time
  • Validate payloads without infrastructure
  • Focus on code, not configuration

Try It Now

  1. Visit: webhookmonitor.online
  2. Copy your unique URL
  3. Make your first request
  4. Watch the magic happen

Loved the tool? Share it with your team and help other devs save time!

Have any feature requests? Leave them in the comments - I love community feedback!

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