{"uid":"cap_6jRqMbQEM7Ca4cHCyMTFT","slug":"web-evidence-capture-sha-256-verification-1a760ad2","name":"Web Evidence Capture & SHA-256 Verification","description":"Website hosted for free through pinggy.io>\n    <meta name=","url":"https://nfsbl-159-89-4-32.free.pinggy.net/evidence?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","required":["url"],"properties":{"url":{"type":"string","description":"http(s) URL to capture evidence for"}}},"responseSchema":{"type":"object","required":["url","contentSha256"],"properties":{"url":{"type":"string"},"bytes":{"type":"integer"},"title":{"type":"string"},"receipt":{"type":"object"},"finalUrl":{"type":"string"},"httpStatus":{"type":"integer"},"linksSample":{"type":"array","items":{"type":"string"}},"contentSha256":{"type":"string"},"changeDetection":{"type":"object"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"down","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_qED3fpzpltr-TBr1YqHPJ","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Fetches a URL and returns a cryptographic SHA-256 hash of its content along with HTTP metadata, title, links, and byte size as verifiable evidence","exampleAgentPrompt":"Capture verifiable evidence for https://example.com/terms-of-service — I need the SHA-256 hash of the page content, the HTTP status, and a sample of the links on the page so I can prove what was there today.","exampleUseCases":[{"title":"Legal compliance content snapshot","prompt":"I need to capture evidence of what's currently published at https://competitor.com/pricing right now — get me the SHA-256 hash, the page title, and the HTTP status so I have a timestamped proof for our legal team."},{"title":"Monitoring webpage for changes","prompt":"Check https://gov-agency.org/regulations/2024 and give me the content hash so I can compare it later to detect if anything on that page has been modified."},{"title":"Verifying a live URL before archiving","prompt":"Before we archive it, can you fetch https://mybrand.com/press-release-jan-2025 and confirm it's returning a 200, grab the content SHA-256 hash, and tell me how many bytes the page is?"}],"resultDescription":"Returns the original URL, the final redirected URL (if any), HTTP status code, page title, content size in bytes, a SHA-256 hash of the page content for integrity verification, a sample array of links found on the page, a change detection object for comparing against prior captures, and a payment receipt object.","failureModes":["URL is unreachable or returns a non-2xx HTTP status — httpStatus field reflects the error code","URL redirects to an unexpected or blocked destination — finalUrl may differ from input","Target site blocks automated fetchers (bot protection) — content may be empty or partial, affecting hash reliability","Malformed or non-HTTP URL input — request rejected with validation error","Timeout on slow or unresponsive servers — partial or no content returned"],"whenToPreferThis":"Choose this endpoint when you need cryptographic proof (SHA-256) of a webpage's content at a specific moment in time — particularly for legal evidence, compliance auditing, or change detection workflows. It is distinct from full-site crawlers because it captures a single URL with integrity metadata rather than bulk-scraping. Prefer it over generic HTTP fetch tools when you need the content hash, HTTP status, and link sample bundled as a structured, verifiable artifact.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-14T09:25:18.077Z","isFirstParty":false,"canonicalSlug":"web-evidence-capture-sha-256-verification-1a760ad2"}