{"uid":"cap_rLhCizkbjPQ5nkgbm2RHj","slug":"sableforge-url-check-cf6dfdc8","name":"SableForge URL Check","description":"12 pay-per-call HTTP APIs settled in USDC on Base via x402 v2. No API keys, no accounts, no signup — $0.0005–$0.0020 per call. Includes a locally hosted 27B LLM endpoint.","url":"https://sableforge.servehttp.com/api/urlcheck?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","properties":{"url":{"type":"string"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"url":"https://example.com","status":200,"headers":{"content-type":"text/html"}}},"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_IC_ndHNsg2zdL51S-U4_k","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":"Performs an HTTP request to a given URL and returns the response status code and headers, allowing agents to verify URL reachability and content type.","exampleAgentPrompt":"Can you check if https://example.com is reachable and tell me what HTTP status code and content-type header it returns?","exampleUseCases":[{"title":"Broken link detection before publishing","prompt":"Before I publish this blog post, can you check if https://docs.partner-api.com/reference/auth is still live and returning a 200?"},{"title":"Content type verification for scraping pipeline","prompt":"I need to know whether https://data.govsite.org/exports/latest.csv returns a CSV or something else — can you check its content-type header?"},{"title":"Uptime probe for a third-party dependency","prompt":"Can you quickly check whether https://api.paymentprovider.io/health is up and what status code it returns right now?"}],"resultDescription":"Returns a JSON object containing the URL that was checked, the HTTP status code received, and a map of response headers (including content-type). Example: {url: 'https://example.com', status: 200, headers: {'content-type': 'text/html'}}.","failureModes":["URL is unreachable or DNS fails — may return a network error or non-2xx status","URL requires authentication — will return 401 or 403 status","URL causes a redirect loop — may return unexpected status","Invalid or malformed URL input — request may be rejected","Payment failure via x402 — call not executed if USDC settlement fails"],"whenToPreferThis":"Use this endpoint when you need a lightweight, pay-per-call check of URL reachability, HTTP status, or response headers without needing full page content. Ideal for agents that need to validate links, probe uptime, or inspect content-type before fetching. Prefer over full scraping endpoints when you only need status/header metadata, not body content. The x402 micropayment model means no API key setup is needed.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T18:39:16.121Z","isFirstParty":false,"canonicalSlug":"sableforge-url-check-cf6dfdc8"}