{"uid":"cap_y2iWqyiA_WH6JXWvSOUTV","slug":"internet-archive-wayback-snapshot-comparison-9903dedc","name":"Internet Archive Wayback Snapshot Comparison","description":"Compare two Internet Archive Wayback snapshots near caller-supplied dates and return snapshot URLs and textual change evidence.","url":"https://x402-zoo.lolagent.workers.dev/api/website-evidence","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["url","date_a","date_b"],"properties":{"url":{"type":"string"},"date_a":{"type":"string"},"date_b":{"type":"string"}}}},"additionalProperties":false}}},"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":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.05/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_6JJ78I3V3QHp7MEoID1fu","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.05","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Fetches two Wayback Machine snapshots near caller-supplied dates for a URL and returns the snapshot URLs plus textual evidence of changes between them.","exampleAgentPrompt":"Can you compare the Wayback Machine snapshots of https://example.com from January 1 2022 and January 1 2023 and tell me what text changed between those two dates?","exampleUseCases":[{"title":"Verify terms of service changes","prompt":"Check if the terms of service at https://acme-corp.com/terms changed between March 15 2022 and March 15 2023 — I need to see what was actually different in the archived snapshots."},{"title":"Track competitor landing page evolution","prompt":"Pull the Wayback snapshots of https://competitor.io from June 1 2021 and June 1 2022 and show me the textual differences between those two dates."},{"title":"Research policy update evidence","prompt":"I need evidence that https://socialmedia-platform.com/privacy was updated between January 2020 and January 2021 — can you grab the two nearest archived snapshots and compare the text?"}],"resultDescription":"Returns two Wayback Machine snapshot URLs (one nearest to date_a, one nearest to date_b) along with textual change evidence — typically a diff or summary of added, removed, or modified text found between the two archived versions of the page.","failureModes":["No Wayback snapshot exists near one or both supplied dates — endpoint may return an error or empty snapshot","URL has never been crawled by the Internet Archive — no snapshots available","Invalid date format in date_a or date_b parameters","Target URL is malformed or unreachable by the Wayback CDX API","Rate limiting or availability issues from the Internet Archive"],"whenToPreferThis":"Choose this endpoint when you need to compare two specific historical versions of a webpage using Internet Archive snapshots, especially when you need both the archived snapshot URLs and textual change evidence in a single call. Prefer this over live-page monitoring tools when the comparison involves past dates rather than current vs. prior state.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T12:59:13.776Z","isFirstParty":false}