{"uid":"cap__MiwZsYZ2o9djzyI9htbD","slug":"kairostamp-evidence-snapshot-0805f05a","name":"Kairostamp Evidence Snapshot","description":"Kairostamp evidence snapshot: server-side fetch of one public http/https URL, returning a time-stamped receipt with the response status, content type, byte length, SHA-256 of the body, redirect chain, a text preview, and a tamper-evident hash-chain entry.","url":"https://kairostamp.com/api/v1/snapshot?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":null,"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.05","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":"down","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_rQ_G0tEP53OE-BtY_GY7S","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Fetches a public URL server-side and returns a tamper-evident, time-stamped receipt with status, content type, byte length, SHA-256 hash, redirect chain, text preview, and hash-chain entry for evidentiary purposes.","exampleAgentPrompt":"Take a tamper-evident Kairostamp snapshot of https://example.com/terms-of-service right now so I have a time-stamped, hash-verified receipt proving what the page said today.","exampleUseCases":[{"title":"Legal evidence of webpage content","prompt":"Capture a Kairostamp snapshot of https://competitor.com/pricing right now — I need a time-stamped, tamper-evident receipt with the SHA-256 hash so I can use it as evidence in a legal dispute about what they were advertising."},{"title":"Compliance audit trail for published policy","prompt":"Take a Kairostamp snapshot of https://mybusiness.com/privacy-policy today so I have a hash-chain receipt proving what our privacy policy said at this exact moment for our compliance records."},{"title":"Archiving influencer post for brand safety","prompt":"Create a timestamped Kairostamp evidence snapshot of https://socialblog.com/post/12345 — I need proof of what the page contained, including a SHA-256 hash and redirect chain, in case the content changes later."}],"resultDescription":"A time-stamped receipt object containing: the fetched URL, HTTP response status code, content type header, body byte length, SHA-256 hash of the response body, the ordered redirect chain, a plain-text preview of the content, and a tamper-evident hash-chain entry that can be later verified via Kairostamp's receipt verification endpoint.","failureModes":["Non-public or private URLs return an access error or 4xx response recorded in the receipt","URLs that require authentication or cookies cannot be fetched server-side","Very large responses may be truncated in the preview portion","Malformed or non-HTTP/HTTPS URLs are rejected with a validation error","URLs behind bot-detection or CAPTCHA may return unexpected content or block the fetch","Network timeouts for slow-responding servers may result in a fetch failure"],"whenToPreferThis":"Choose this endpoint when you need a cryptographically verifiable, tamper-evident record of a public URL's content at a specific point in time — especially for legal evidence, compliance auditing, or dispute resolution. It is distinct from a simple HTTP metadata check because it captures the full body hash and creates a hash-chain entry, and from a plain scrape because provenance and integrity are the primary outputs. Prefer this over the URL digest receipt sibling when you also need a text preview and the full redirect chain in addition to the hash.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-13T17:27:27.338Z","isFirstParty":false,"canonicalSlug":"kairostamp-evidence-snapshot-0805f05a"}