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Quant Agent Shop URL Status Check
x402
Quant Agent Shop URL Status Check is a paid API for AI agents from quantagentshop.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-23).
Checks a public URL's HTTP status, redirect chain, latency, content type, server header, and TLS certificate details without reading the page body.
Price / call$0.002
Success—
StatusUnknown
How this service works
URL status check. Send one public URL; returns the HTTP status, every redirect hop, latency, content type and length, server header and, for https, the certificate issuer and days left. GET only; the body is never read or returned. A site that is down is an answer, not an error. Use to check a link before using it. Each payer can check a host 10 times a minute. To read the page use /v1/fetch-page. Typical response under 1 s. Failed calls are not charged.
Output
Returns the final HTTP status code, each redirect hop in the chain, round-trip latency, content-type and content-length headers, the server header, and (for HTTPS URLs) the TLS certificate issuer and days remaining until expiry. A site that is down returns its failure status rather than an error.
Example use cases
Broken link audit before publishing
“I'm about to publish a blog post with a bunch of external links — can you check whether https://openai.com/research/gpt-4 is still live and what status code it returns?”
SSL certificate expiry check
“Can you check https://mybankingapp.com and tell me how many days are left on its HTTPS certificate and who the issuer is?”
Redirect chain investigation
“Something seems off with https://go.mycompany.com/campaign — can you trace all the redirect hops it goes through and tell me where it ultimately lands and what status code it returns?”
Technical details
Endpoint
POSThttps://quantagentshop.com/v1/url-status?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a quick, lightweight probe of a URL's reachability, status, and TLS health without downloading or parsing page content. Prefer it over a full page-fetch endpoint when you only need availability and metadata, not content. It is ideal for link validation, certificate monitoring, and redirect chain inspection at low cost ($0.002/call) with sub-1-second typical latency.
Side effects
- Invalid or malformed URL returns a validation error
- Private/internal URLs (non-public hosts) are rejected
- Rate limit exceeded: more than 10 checks per host per minute returns a 429
- DNS resolution failure for the given hostname
- Connection timeout if the host is unreachable but slow
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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