{"uid":"cap_spcxIHfGLZRCdBKlS-gGn","slug":"quant-agent-shop-url-status-check-fc8b76fe","name":"Quant Agent Shop URL Status Check","description":"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.","url":"https://quantagentshop.com/v1/url-status?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","bodyType","body"],"properties":{"body":{"type":"object","required":["url"],"properties":{"url":{"type":"string","title":"Url","format":"uri","maxLength":2083,"minLength":1,"description":"Public http or https URL to check."}},"additionalProperties":false},"type":{"type":"string","const":"http"},"method":{"enum":["POST","PUT","PATCH"],"type":"string"},"bodyType":{"enum":["json","form-data","text"],"type":"string"}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_YEsdBjZYwyNDLlx-naCcJ","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Checks a public URL's HTTP status, redirect chain, latency, content type, server header, and TLS certificate details without reading the page body.","exampleAgentPrompt":"Before I share that link, can you check if https://example.com/report is actually up and reachable, and tell me what HTTP status it returns, how many redirects it goes through, and whether the HTTPS certificate is still valid?","exampleUseCases":[{"title":"Broken link audit before publishing","prompt":"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?"},{"title":"SSL certificate expiry check","prompt":"Can you check https://mybankingapp.com and tell me how many days are left on its HTTPS certificate and who the issuer is?"},{"title":"Redirect chain investigation","prompt":"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?"}],"resultDescription":"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.","failureModes":["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"],"whenToPreferThis":"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.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-23T12:34:00.401Z","isFirstParty":false,"canonicalSlug":"quant-agent-shop-url-status-check-fc8b76fe"}