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x402 Web Tools – HTTP Reachability & TLS Check
x402
x402 Web Tools – HTTP Reachability & TLS Check is a paid API for AI agents from q7w9tnp09rjt5ccj.68r.lambda-web.us-east-1.on.aws, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-29).
Checks whether an HTTPS URL is reachable, reporting HTTP status, redirect chain with timings, security headers, and TLS certificate details including expiry.
Price / call$0.001
Success—
StatusUnknown
How this service works
Request an https URL and report whether it is reachable, its status, every redirect hop with timings, key and security headers (HSTS, CSP and others), and the TLS certificate with its issuer, the names it covers and the days until it expires. An unreachable URL is a result too, with the reason.
Output
A JSON object containing: reachable (boolean), HTTP status code, total response time in milliseconds, final URL after redirects, number of redirects and each hop with timing, key security headers (HSTS, CSP, etc.), and TLS certificate details including issuer, expiry date, days remaining, and whether expiry is imminent.
Example use cases
Certificate expiry monitoring for production site
“Check https://api.mycompany.com and tell me how many days are left on the TLS certificate, who issued it, and whether it's expiring soon.”
Diagnosing unexpected redirects on a domain
“I think our old domain is doing weird redirects — can you probe https://oldsite.example.com and show me every redirect hop, the timing of each, and where it finally lands?”
Security header audit before launch
“We're about to launch our site at https://app.startup.io — can you check if it's up, and whether it has HSTS and CSP security headers set correctly?”
Technical details
Endpoint
GEThttps://q7w9tnp09rjt5ccj.68r.lambda-web.us-east-1.on.aws/v1/http-check?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a quick, single-call diagnostic on an HTTPS URL that combines reachability, redirect chain, security headers, and TLS certificate status in one response. It is ideal for monitoring pipelines, pre-launch audits, and certificate expiry checks. Prefer it over generic HTTP ping tools when you also need TLS and header intelligence without making multiple separate calls.
Side effects
- URL is unreachable — returns reachable: false with a reason (e.g. DNS failure, connection refused, timeout)
- Non-HTTPS URL provided — endpoint requires https:// scheme
- Invalid or malformed URL — may return an error or unreachable result
- TLS handshake failure — reported as unreachable with TLS error reason
- Rate limiting or payment failure — request not processed
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"tls": {
"issuer": "Let's Encrypt, E7",
"valid_to": "2026-12-20T00:00:00.000Z",
"days_left": 56,
"expires_soon": false
},
"status": 200,
"total_ms": 180,
"final_url": "https://www.x402.org/",
"reachable": true,
"redirects": 1
}
}Tags
x402
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