{"uid":"cap_SB2hrU86kF_huW30k7AZi","slug":"web-evidence-capture-change-detection-c9f6e0ea","name":"Web Evidence Capture & Change Detection","description":"Website hosted for free through pinggy.io>\n    <meta name=","url":"https://epnkd-159-89-4-32.run.pinggy-free.link/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":"unknown","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_egPsmessYDAla7drxRhjd","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":"Captures a cryptographic evidence snapshot of a URL, returning its SHA-256 content hash, HTTP status, title, links, and change-detection metadata","exampleAgentPrompt":"Capture an evidence snapshot of https://example.com/terms and give me the SHA-256 hash, HTTP status, and page title so I have a verifiable record of what it said today.","exampleUseCases":[{"title":"Legal webpage content preservation","prompt":"I need tamper-evident proof of what this terms-of-service page says right now — can you capture an evidence snapshot of https://acme.com/terms and give me the content hash and HTTP status?"},{"title":"Monitoring a competitor's pricing page","prompt":"Check https://competitor.com/pricing and give me the SHA-256 fingerprint and any change detection info so I can compare it against last week's snapshot and see if anything changed."},{"title":"Verifying a published article still exists","prompt":"Can you fetch evidence for https://news-site.com/article/12345 and confirm it's still live — I need the HTTP status, final URL, and content hash for my records."}],"resultDescription":"Returns a JSON object containing the requested URL, the final resolved URL (after redirects), HTTP status code, page title, content size in bytes, a SHA-256 hash of the page content, a sample of links found on the page, a change-detection sub-object for comparing against prior captures, and a payment receipt.","failureModes":["URL is unreachable or times out — endpoint may return an error or non-200 HTTP status","Invalid or malformed URL input — request will fail schema validation","Target page returns a non-HTML response (e.g. binary file) — title and links may be empty or null","Pinggy tunnel is offline or rate-limited — the endpoint itself may be unavailable","HTTPS certificate errors on the target URL — capture may fail or return partial data"],"whenToPreferThis":"Choose this endpoint when you need a cryptographic, tamper-evident record of a webpage's content at a specific point in time — particularly for legal evidence, compliance audits, or change-detection workflows. It is especially useful when you need both a SHA-256 content hash and structured metadata (title, status, links) in a single call, and when you want a payment receipt as proof of the capture event.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-24T06:35:59.158Z","isFirstParty":false,"canonicalSlug":"web-evidence-capture-change-detection-c9f6e0ea"}