{"uid":"cap_zVN8-HnDgsECFSF3QoeUS","slug":"agentproof-check-url-alive-53fc3193","name":"AgentProof Check URL Alive","description":"AgentProof publishes Agent Transaction Passport™ and provides machine-paid evidence, provenance receipts, source comparison and change monitoring for autonomous transactions.","url":"https://agentproof.hatchable.site/api/paid/check_url_alive?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"url":{"type":"string","format":"uri"},"claim":{"type":"string"},"email":{"type":"string"},"phone":{"type":"string"},"contactName":{"type":"string"},"previousSha256":{"type":"string"}}},"responseSchema":{"type":"json","example":{"ok":true,"tool":"check_url_alive","receipt":{"id":"uuid","integrity_sha256":"..."},"service":"AgentProof"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_KJTnkKOkQ_xd0B0VfT4OC","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Checks whether a given URL is alive/reachable and returns a machine-verifiable provenance receipt with integrity hash","exampleAgentPrompt":"Can you check if https://api.example.com/health is alive right now and give me a tamper-evident receipt proving it was reachable?","exampleUseCases":[{"title":"Pre-transaction link liveness check","prompt":"Before my agent purchases a data feed subscription, verify that https://datafeed.provider.com/api/stream is actually reachable and give me a receipt I can keep as proof."},{"title":"Dead link audit with provenance","prompt":"Check whether https://docs.myservice.io/reference is still live and return a cryptographic receipt showing when and whether it responded."},{"title":"Autonomous pipeline health gate","prompt":"My workflow needs to confirm https://reports.internal.corp/export is up before proceeding — probe it and give me a signed receipt I can log for audit purposes."}],"resultDescription":"A JSON object with an 'ok' boolean indicating reachability, the tool name ('check_url_alive'), a provenance receipt containing a UUID receipt ID and an integrity SHA-256 hash, and the service name 'AgentProof'. This receipt serves as machine-verifiable evidence that the URL was checked at a given moment.","failureModes":["URL is unreachable or returns non-2xx — ok may be false","Invalid or malformed URL input — likely 4xx error response","Network timeout reaching the target URL — may result in ok:false or error","Payment failure (x402) — request rejected before check is performed","Target URL blocks probe requests (e.g. firewall, bot detection) — false negative possible"],"whenToPreferThis":"Choose this endpoint when you need not just a liveness check but a machine-verifiable, tamper-evident receipt proving the check occurred — particularly useful for autonomous agent workflows, audit trails, or pre-transaction validation where proof of URL reachability at a specific moment is required. Prefer over generic uptime monitors when cryptographic provenance is important.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-11T12:31:21.448Z","isFirstParty":false,"canonicalSlug":"agentproof-check-url-alive-53fc3193"}