How do I test webhooks with custom payload structures?

Edit the SAMPLE_PAYLOADS dictionary in the script to add your custom payload templates. You can also pass JSON files using shell redirection. The script validates JSON syntax before sending. For complex payload generation, consider the Master Pack webhook testing suite with template builder.

My webhook endpoint requires authentication headers. How do I add them?

The script supports custom headers but requires code modification (add to default_headers dict). For production testing with multiple auth methods (OAuth, Bearer tokens, API keys), the Master Pack includes pre-configured authentication profiles for 50+ common APIs.

How can I simulate webhook retry logic?

This free script sends single requests only. For retry simulation, wrap it in a bash loop with delays. The Master Pack includes built-in retry logic with exponential backoff, jitter, and failure analysis to test how your system handles webhook delivery failures.

Can this tool test webhook security (signature validation)?

Yes, use --secret flag to generate HMAC-SHA256 signatures. The script adds X-Webhook-Signature header automatically. For testing other signature algorithms (SHA1, SHA512) or custom security schemes, you will need to modify the generate_signature function or use the Master Pack multi-algorithm validator.

Webhook Testing & Debugging Tool: Complete Guide & Free Download

A free webhook testing tool that simulates payloads, validates endpoints, and logs responses - helping you catch integration issues before they impact production without expensive API testing platforms.

Open Source Battle-Tested MIT Licensed Maintained by Aria Shaw

⬇ Download the Script Now

5.8 KB · Updated 2025-01-15 · Free Forever

What Problem This Script Solves

Webhook integrations fail silently in production, causing missed data synchronizations and business process disruptions. Without proper testing, you only discover webhook failures when critical data is already lost. Manual webhook testing is time-consuming and error-prone, especially with signature validation.

Quick Start: How to Use Webhook Testing & Debugging Tool

Get up and running in under 5 minutes with these simple steps:

Download and install

wget https://ariashaw.com/assets/downloads/webhook_tester.py && chmod +x webhook_tester.py

Test webhook with default payload

python3 webhook_tester.py https://your-odoo.com/webhook/endpoint

Test with specific event type

python3 webhook_tester.py https://your-odoo.com/webhook/endpoint --payload-type payment_received

Test with signature validation

python3 webhook_tester.py https://your-odoo.com/webhook/endpoint --secret your_webhook_secret

How It Works: A Look Under the Hood

This Python script simulates webhook POST requests with customizable payloads. It includes 3 built-in payload templates (order_created, customer_updated, payment_received) with realistic data structures. The script generates HMAC-SHA256 signatures when a secret is provided, sends the payload with proper headers, measures response time, and validates HTTP status codes. Supports custom timeouts and logs full request/response details for debugging. No persistent logging or retry simulation - designed for ad-hoc testing and debugging webhook endpoints during integration development.

Real-World Success Stories

Here's how real companies are using this script in production:

E-commerce integration with payment gateway

Discovered webhook signature mismatch before production deployment. Testing revealed incorrect HMAC algorithm implementation, preventing payment notification failures that would have caused order fulfillment delays.

Multi-system inventory synchronization

Identified webhook timeout issues (endpoint taking 35s to respond) during load testing. Implemented async processing and reduced response time to 2s, preventing webhook retry storms that would have overwhelmed the system.

What This Free Script Covers (And Doesn't)

This production script is production-ready and has helped thousands of Odoo deployments. However, it's designed as a starting point, not a complete enterprise solution.

Current Limitations

Basic payload templates; limited customization options.
No webhook retry logic simulation.
Manual endpoint configuration required.

Common Questions & Troubleshooting

Based on 200+ support requests, here are the most common questions about this script:

How do I test webhooks with custom payload structures?

Edit the SAMPLE_PAYLOADS dictionary in the script to add your custom payload templates. You can also pass JSON files using shell redirection. The script validates JSON syntax before sending. For complex payload generation, consider the Master Pack webhook testing suite with template builder.
My webhook endpoint requires authentication headers. How do I add them?

The script supports custom headers but requires code modification (add to default_headers dict). For production testing with multiple auth methods (OAuth, Bearer tokens, API keys), the Master Pack includes pre-configured authentication profiles for 50+ common APIs.
How can I simulate webhook retry logic?

This free script sends single requests only. For retry simulation, wrap it in a bash loop with delays. The Master Pack includes built-in retry logic with exponential backoff, jitter, and failure analysis to test how your system handles webhook delivery failures.
Can this tool test webhook security (signature validation)?

Yes, use --secret flag to generate HMAC-SHA256 signatures. The script adds X-Webhook-Signature header automatically. For testing other signature algorithms (SHA1, SHA512) or custom security schemes, you will need to modify the generate_signature function or use the Master Pack multi-algorithm validator.

Upgrade to Enterprise-Grade

This free script handles the basics. For a complete, production-ready solution, upgrade to the Master Pack.

What You Get

Complete Solution:
5 comprehensive modules with 68+ integrated tools
2,000+ pages of professional documentation
Direct email support from Aria Shaw
Lifetime updates and improvements

Investment: $699 one-time payment

What you avoid: $15,000-$50,000 in consultant fees + months of trial-and-error

Includes: Complete enterprise solution with ongoing support

Get Master Pack $699 →

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This guide was written by Aria Shaw, the Digital Plumber—specializing in production Odoo deployments and self-hosting architecture. All scripts are tested in real production environments before publication. Questions? Email aria@ariashaw.com