{"uid":"cap_EtUZiOCBQr8CkDY4qzYMv","slug":"agentproof-detect-page-change-8300bde1","name":"AgentProof Detect Page Change","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/detect_page_change?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":"detect_page_change","receipt":{"id":"uuid","integrity_sha256":"..."},"service":"AgentProof"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.03","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":"$0.03/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.03","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.03","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_IDhz1_IhucxGtusjVmGFs","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.03","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Monitors a web page for content changes and returns a cryptographically signed provenance receipt with integrity hash as machine-verifiable evidence","exampleAgentPrompt":"Check whether https://example.com/terms-of-service has changed since my last snapshot and give me a cryptographic receipt proving the current state, including its SHA-256 integrity hash.","exampleUseCases":[{"title":"Regulatory page change monitoring","prompt":"Monitor https://sec.gov/rules/final.shtml and tell me if it's changed since yesterday — I need a provenance receipt with an integrity hash I can use as auditable evidence."},{"title":"Autonomous contract source verification","prompt":"Before my agent signs this smart contract, check if the source page at https://defi-protocol.io/contract-terms has been modified and return a signed receipt proving what it said at time of check."},{"title":"Competitive pricing page surveillance","prompt":"Check if the pricing page at https://competitor.com/pricing has changed since my last check and give me a tamper-evident receipt with the SHA-256 hash of the current content."}],"resultDescription":"Returns a JSON object with an 'ok' boolean, the tool name 'detect_page_change', a receipt object containing a UUID and a SHA-256 integrity hash of the page content, and the service name 'AgentProof'. This receipt acts as machine-verifiable proof of the page's state at the time of the call.","failureModes":["URL unreachable or returns non-200 status — ok:false with error detail","Invalid or malformed URL input — request rejected before fetch","Page content too large to hash within limits — may timeout or error","Payment not processed — x402 payment required before response","Transient network error fetching target page — retry recommended"],"whenToPreferThis":"Choose this endpoint when an autonomous agent needs cryptographically verifiable, receipted proof that a web page has or has not changed — especially in compliance, audit, legal, or trust-sensitive workflows where a simple diff is insufficient and a signed provenance record is required. It is preferable over generic web scraping or diffing tools when the output must serve as machine-paid evidence in an autonomous transaction context.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-11T12:38:43.389Z","isFirstParty":false,"canonicalSlug":"agentproof-detect-page-change-8300bde1"}