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URL Health Check
x402
URL Health Check is a paid API for AI agents from api.strale.io, paid per call via x402, $0.0324/call, status unknown (last checked 2026-10-10).
Checks if a URL is alive and returns status code, response time, redirect chain, SSL validity, content type, and server header.
Price / call$0.0324
Success—
StatusUnknown
How this service works
Check if a URL is alive. Returns status code, response time, redirect chain, SSL validity, content type, server header.
Output
Returns the HTTP status code, response time in milliseconds, the full redirect chain if any redirects occurred, whether the SSL certificate is valid, the content type header, and the server header from the response.
Example use cases
Example prompt
“Can you check if https://example.com is up and responding? Use a GET request and follow any redirects — I want to see the status code, how fast it responds, the SSL status, and what server it's running.”
Technical details
Endpoint
GEThttps://api.strale.io/x402/url-health-check?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a quick, comprehensive health snapshot of a single URL including SSL validity, redirect chain, and server metadata — rather than a simple ping. Ideal for link validation, uptime checks, or pre-flight verification before scraping or integrating an external URL.
Side effects
- URL is unreachable or DNS resolution fails — returns error or timeout
- Invalid URL format provided — returns validation error
- Timeout exceeded — returns timeout error with elapsed time
- SSL handshake failure for HTTPS URLs — may return SSL error details
- Non-HTTP/HTTPS schemes not supported — returns unsupported scheme error
Input
{
"url": "https://www.google.com",
"timeout": 30,
"follow_redirects": true
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Output
{
"url": "https://www.google.com",
"_meta": {
"payment": {
"method": "x402",
"price_usd": 0.0324,
"settlement_id": "0x3bdc7c8ea65891ff10c0389a941e970359e833188d8166f2847686c027762e9a"
},
"capability": "url-health-check",
"latency_ms": 18,
"provenance": {
"source": "http-head",
"fetched_at": "2026-06-16T01:24:11.454Z"
}
},
"is_up": true,
"server": "gws",
"final_url": "https://www.google.com",
"ssl_valid": true,
"status_code": 200,
"content_type": "text/html; charset=ISO-8859-1",
"redirect_chain": [],
"response_time_ms": 18
}Tags
x402
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