{"uid":"cap_zObySSyeGh10AmM5h6kcK","slug":"stillcurrent-url-check-api-1b8cfe9a","name":"StillCurrent URL Check API","description":"Pay-per-call checks that tell you whether a source is still current: link liveness and staleness, and whether a quoted sentence or claim still appears on the cited page (with archive.org fallback).","url":"https://stillcurrent.something-agent.workers.dev/check/url?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"url":{"type":"string","title":"Url","maxLength":2048,"description":"Absolute http(s) URL of the source, citation or dataset to check."},"include_archive":{"type":"boolean","title":"Include Archive","default":true,"description":"Look up the latest archive.org Wayback Machine snapshot."},"stale_after_days":{"type":"integer","title":"Stale After Days","default":365,"maximum":36500,"minimum":1,"description":"Age (days since last update) after which a live page is reported as stale."}}},"responseSchema":{"type":"json","example":{"verdict":"live","evidence":["HTTP 200 after 0 redirect(s)","last updated 2026-09-29 (23 days ago, source text['last reviewed'], confidence medium)","latest good archive.org snapshot 2026-10-16"],"freshness":"fresh","usable_as_citation":true}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/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_swuq7f2gfNbPYqfKiai8I","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Checks whether a URL is live and fresh, and optionally retrieves the latest archive.org snapshot, returning a verdict on whether the source is usable as a citation.","exampleAgentPrompt":"Can you check whether https://example.gov/report-2023 is still live and not stale — flag it if the page hasn't been updated in the last 180 days, and include the latest Wayback Machine snapshot if one exists?","exampleUseCases":[{"title":"Academic citation link verification","prompt":"I'm submitting a paper and need to verify that https://pubmed.ncbi.nlm.nih.gov/38291047/ is still live and was updated within the last two years — also grab any archive.org backup in case it goes down."},{"title":"Journalism fact-check before publishing","prompt":"Before we publish, can you check if https://www.cdc.gov/flu/about/burden/index.html is still accessible and hasn't gone stale in the last 90 days? I need to know if I can still cite it."},{"title":"Automated broken-link audit for a knowledge base","prompt":"Check whether https://docs.openai.com/guides/fine-tuning is still live and considered fresh — treat anything older than 365 days as stale, and include the latest Wayback snapshot."}],"resultDescription":"Returns a JSON object with a 'verdict' (e.g. 'live', 'dead', 'redirect'), a 'freshness' label ('fresh' or 'stale'), a boolean 'usable_as_citation', and an 'evidence' array listing HTTP status, redirect count, estimated last-update date with confidence level, and the most recent archive.org snapshot URL if requested.","failureModes":["URL is malformed or exceeds 2048 characters — returns validation error","Target server times out or blocks the checker — verdict may be inconclusive","Last-updated date cannot be detected — confidence reported as low or unknown","archive.org has no snapshot for the URL — snapshot field absent or null","Network errors reaching archive.org when include_archive is true"],"whenToPreferThis":"Choose this endpoint when you need a lightweight, pay-per-call check on whether a specific URL is reachable, fresh, and suitable for citation — especially when you also want an automatic archive.org fallback. Prefer it over full web-scraping tools when you don't need the page content itself, just its liveness and freshness status.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-28T06:32:46.586Z","isFirstParty":false,"canonicalSlug":"stillcurrent-url-check-api-1b8cfe9a"}