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Webhook Tester API
x402
Webhook Tester API is a paid API for AI agents from klymax402.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).
Sends an HTTP request to a specified webhook URL and returns the response, latency, TLS status, and redirect details
Price / call$0.005
Success—
StatusUnknown
How this service works
One MCP endpoint gives your AI agent access to 100 APIs -- crypto, DeFi, web, AI, finance and utilities. No API keys, USDC on Base from $0.003/call.
Output
A JSON object containing: success (boolean), HTTP response body, latency in milliseconds, TLS validity (boolean), the final URL after any redirects, whether the request was redirected, and the HTTP method used.
Example use cases
Verify webhook before production launch
“Before I flip the switch on my new order notification system, can you ping my webhook at https://api.mystore.com/webhooks/orders with a test POST body like {"event":"test","status":"ok"} and confirm it's responding correctly with TLS enabled?”
Debug failing webhook delivery
“My payment processor says it's sending webhooks to https://payments.myapp.com/stripe/events but I'm not getting them — can you send a test POST there with headers {"X-Test":"true"} and body {"type":"payment_intent.succeeded"} and show me what response comes back?”
Measure webhook endpoint latency
“I want to know how fast my webhook server at https://hooks.myservice.io/ingest responds — can you send it a PUT request with a 15-second timeout and report the latency in milliseconds?”
Technical details
Endpoint
GEThttps://klymax402.com/api/webhook-tester/api/testWhen to prefer
Use this endpoint when you need to quickly test or debug a webhook endpoint without setting up a local environment — especially useful for confirming TLS, measuring response latency, inspecting response payloads, and verifying custom headers are accepted. Prefer this over manual curl commands or Postman when operating inside an AI agent workflow that needs programmatic webhook verification.
Side effects
- Webhook URL is not HTTPS — endpoint requires secure URLs only
- Timeout exceeded (max 30 seconds) — returns error if target doesn't respond in time
- Target server returns non-2xx status — success will be false but response is still returned
- Network unreachable or DNS failure — returns error with no response body
- Invalid JSON body provided — request may fail at serialization
- Webhook URL is malformed or missing — returns validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string | Webhook URL to test (must be https) |
| body | object | JSON body to send |
| method | string | HTTP method: POST, PUT, PATCH, DELETE (default: POST) |
| headers | object | Custom headers as key-value pairs |
| timeout | number | Timeout in seconds (default: 10, max: 30) |
Output
Schema · Response
{
"type": "json",
"example": {
"tls": true,
"url": "example",
"method": "example",
"success": true,
"finalUrl": "example",
"response": {},
"latencyMs": 1,
"redirected": true
}
}Tags
x402
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