Real-Time Webhook Tester
Troubleshoot, inspect, and debug incoming HTTP webhook payloads, headers, and query parameters instantly without installing ngrok.
Trigger Webhook Command
curl -X POST \
-H "Content-Type: application/json" \
-d '{"event":"endpoint.ping","monitor":{"id":"mon_84f93a","name":"Main Server Check","url":"https://api.yourcompany.com"},"status":"healthy","latencyMs":142,"timestamp":"2026-06-14T23:18:56.445Z"}' \
""Copy and paste this preset script in your CLI terminal, script file, or developer console to send a test request payload directly to your temporary catcher URL.
Request Inbox (0/20)
Waiting for requests...
Send a request from your terminal command or click the "Send Mock POST" button above. The dashboard will automatically update.
Designed For High-Speed Debugging
Skip local server setup. Verify and troubleshoot payloads from third-party APIs in seconds.
Zero CLI Setup
Ngrok requires token configurations and CLI installations. Pingzo Webhook Tester provides a cloud endpoint instantly on browser mount.
JSON Syntax Formatting
Incoming payloads are parsed, beautified, and formatted with header keys and query parameters structured for quick inspection.
Built-in Test Dispatcher
Don't wait to configure external services. Click "Send Mock POST" to instantly fire a simulated payload and verify that the catcher dashboard is active.
What are Webhooks & How do they work?
Unlike traditional API polling where your server asks another server for updates repeatedly, a Webhook works by reversing the connection. The external service (e.g., Stripe, Shopify) POSTs HTTP event details directly to your server URL the second an action occurs.
When debugging webhooks, developers often face issues because external payloads vary in structure, contain authorization headers, or require strict content type parsing.
Security: Webhook Signature Checks
Because webhook endpoints are public, anyone can send mock POST requests to your server. To prevent spoofing, reliable providers calculate a cryptographic hash signature of the request body (usually using HMAC-SHA256 and a shared secret) and pass it in the headers (e.g. Stripe-Signature or X-Hub-Signature).
You should always verify this signature inside your backend endpoint before processing webhook payloads to confirm they originated from a trusted source.
Frequently Asked Questions
Everything you need to know about our cloud-based HTTP debugging tool.
Is my captured webhook payload data secure?
Yes. Captured payloads are stored in highly secure, transient cache storage (Upstash Redis) with a strict 30-minute expiration TTL. Webhook data is never indexed, shared, or written to persistent database logs.
What HTTP methods and content-types are supported?
We support capturing all standard HTTP methods (POST, GET, PUT, DELETE). We automatically parse JSON payloads (application/json), form submissions (application/x-www-form-urlencoded), and raw text payloads.
Do I need to install any CLI agents or tunnel proxies?
No. Unlike tunneling tools like ngrok or local tunnel, Pingzo Webhook Tester runs entirely in the cloud. You copy the URL, trigger your webhooks directly, and watch the dashboard update in real-time.
How long do temporary catcher URLs remain active?
Each generated webhook catcher endpoint is active for 30 minutes. After 30 minutes of inactivity, the Redis cache is purged and the endpoint is recycled automatically.
Can I simulate payload alerts inside Pingzo?
Yes. Once you know your webhook payload format, you can easily connect custom webhooks inside the Pingzo Alert Channels dashboard to receive outage notifications directly on your server channels.
Connect Alerts to Your Webhooks
Once you debug your webhook payloads, configure webhook endpoints in Pingzo to receive uptime alerts directly inside your custom dashboard.