{"uid":"cap_rD6FqWzKr1Dcyj-c1m-Hh","slug":"page-preview-card-watch-403f82cc","name":"page-preview-card-watch","description":"Change watch for page preview card: runs the check and compares it with the result from your previous call for the same url (kept 90 days), returning the current answer, changed true/false, exactly which fields changed with before/after values, and when it was last seen. Call it on a schedule to be told when link preview card data changes. $0.01 per check.","url":"https://intel.rallylive.ca/watch/site/screenshot-meta","method":"GET","headers":{},"bodySchema":{"type":"object","$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","properties":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","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":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_mGpYdhmzvk4h6OGf-vyqB","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Monitors a URL's link preview card (Open Graph/meta) data for changes, returning current values, a changed flag, diff of fields, and last-seen timestamp","exampleAgentPrompt":"Keep an eye on https://example.com/product-launch for me — check whether its link preview card data (title, image, description) has changed since you last looked, and tell me exactly what's different.","exampleUseCases":[{"title":"Track brand page social preview updates","prompt":"Watch https://acme.com/about for me and let me know if the Open Graph title, image, or description on their link preview card has changed since the last time you checked."},{"title":"Alert on competitor landing page refresh","prompt":"Check https://competitor.com/pricing right now — has the link preview card data changed from when you last checked it? Show me exactly which fields changed and what they changed from and to."},{"title":"Scheduled product launch metadata monitoring","prompt":"Run a check on https://mystore.com/new-product every hour and notify me the moment the page's preview card data — title, description, or thumbnail — changes from what you saw before."}],"resultDescription":"Returns the current page preview card data (og:title, og:description, og:image, etc.), a boolean 'changed' flag, a field-level diff showing which properties changed with before/after values, and a timestamp of when the data was last seen. Snapshots are retained for 90 days for comparison.","failureModes":["URL is unreachable or returns non-200 status — error returned, no diff produced","No previous snapshot exists (first call) — returns current data with changed: false or null baseline","Snapshot older than 90 days purged — baseline lost, treated as first call","Rate limit or payment failure — request rejected","Malformed URL input — validation error returned"],"whenToPreferThis":"Use this endpoint when you need to detect changes to a specific URL's link preview card (Open Graph/meta) data over time, especially in scheduled or agentic workflows where you want field-level diffs rather than just a raw snapshot. Prefer this over a plain scraper when you care about before/after comparison and change signals, not just the current value.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T07:21:53.562Z","isFirstParty":false}