{"uid":"cap_mUGgiScZB7adncv8SXSRA","slug":"polyform-url-check-24b934f5","name":"Polyform URL Check","description":"Pay-per-call data endpoints for AI agents. USDC on Base via x402. No account, no API key — one micropayment per call.","url":"https://api.polyform.org/v1/url/check?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","properties":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"url":"http://example.com","status":200,"finalUrl":"https://example.com/","redirected":true,"contentType":"text/html"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.003","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":"$0.003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_moXTUrjvEpb59wzNM5cao","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Fetches a URL via HTTP GET and returns its HTTP status code, final URL after redirects, and content type","exampleAgentPrompt":"Can you check whether https://example.com is reachable, and tell me if it redirects anywhere and what HTTP status it returns?","exampleUseCases":[{"title":"Dead link checker for content pipeline","prompt":"Check if https://docs.example.com/getting-started is still live — I want to know the final URL it lands on and whether it's returning a 200."},{"title":"Redirect chain resolver for SEO audit","prompt":"Does https://example.com redirect? If so, where does it end up and what's the final HTTP status code?"},{"title":"Content type verification before scraping","prompt":"Before I try to parse it, can you check https://api.example.com/data.json and tell me what content type it's serving and whether it's actually reachable?"}],"resultDescription":"Returns a JSON object containing the original URL, the HTTP status code received, the final URL after any redirects, a boolean indicating whether a redirect occurred, and the content type of the response.","failureModes":["Network timeout if the target URL is unreachable or slow to respond","Invalid or malformed URL input returns an error","Target server returns an unexpected status code (5xx) which is reported faithfully","URL resolves to a non-HTTP resource that cannot be inspected"],"whenToPreferThis":"Use this endpoint when you need a quick, pay-per-call check on a URL's reachability, redirect chain, and content type without setting up API keys or accounts. Prefer it over full web scraping tools when you only need HTTP metadata (status, final URL, content type) rather than the page body.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-11T00:31:36.084Z","isFirstParty":false,"canonicalSlug":"polyform-url-check-24b934f5"}