{"uid":"cap_F1c3fBcstYfYPVGhCgrIW","slug":"fresh402-web-change-monitor-832cd6ae","name":"Fresh402 Web Change Monitor","description":"Detect meaningful content changes in any URL, monitor website and web page changes, check page freshness, filter common boilerplate/noise, and return a change signal for AI agents.","url":"https://fresh402.kirilllabs.workers.dev/v1/check?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"url":{"type":"string","format":"uri","description":"Absolute HTTP or HTTPS URL to monitor. Send the same URL again to detect meaningful page changes since the previous Fresh402 snapshot."}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_z9ZedMjreGXC4_2uq00eT","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Checks whether a web page has materially changed since its last snapshot, filtering out common page noise, and updates the stored snapshot.","exampleAgentPrompt":"Check if the page at https://example.com/pricing has materially changed since the last time Fresh402 snapshotted it — ignore things like timestamps or ad banners and just tell me if the real content is different.","exampleUseCases":[{"title":"Competitor pricing page tracker","prompt":"Keep an eye on https://competitor.com/pricing for me — check if the actual pricing content has changed since the last snapshot, filtering out any noise like timestamps or rotating banners."},{"title":"News article update detection","prompt":"Has the article at https://news-site.com/story/breaking-update been meaningfully updated since you last checked it? Ignore minor stuff like ad changes and just tell me if the real content shifted."},{"title":"Government regulation page monitoring","prompt":"Check whether https://agency.gov/regulations/new-rules has had any material changes to its content since the last Fresh402 snapshot — I need to know if the actual regulatory text has been updated."}],"resultDescription":"Returns whether the target web page has materially changed since its previous Fresh402 snapshot, with noise (dynamic elements like timestamps, ads, session tokens) filtered out. The snapshot is updated on each call so subsequent checks compare against the latest version.","failureModes":["URL is unreachable or returns a non-200 status — endpoint may return an error or indicate the page could not be fetched","First call for a URL has no prior snapshot to compare against — may return a baseline-established response rather than a change signal","Page blocks automated access (bot detection, CAPTCHA) — content may be unavailable for comparison","Network timeouts for slow-loading pages","Overly aggressive noise filtering may miss subtle but meaningful changes"],"whenToPreferThis":"Choose this endpoint when you need to detect meaningful content changes on a web page over repeated visits while suppressing common dynamic noise (timestamps, ads, session data). It is ideal for monitoring competitor pages, regulatory publications, news articles, or any URL where you care about substantive content updates rather than cosmetic or technical churn. Prefer it over generic scraping tools when you want built-in change-diffing with snapshot management rather than raw HTML retrieval.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T18:34:36.881Z","isFirstParty":false,"canonicalSlug":"fresh402-web-change-monitor-832cd6ae"}