{"uid":"cap__h9CXYnPTjh1qRytrWsjS","slug":"extract-h1-as-json-watch-7dbce80d","name":"extract-h1-as-json-watch","description":"Change watch for extract h1 as json: runs the check, compares it with the result from your previous call for the same url (kept 90 days) and returns the current answer, changed true/false, the fields that changed with before/after values, and when it was last seen. Schedule it to be alerted when this changes. $0.02 per check.","url":"https://page.intel.rallylive.ca/watch/page/h1/json?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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_Ra0VJf-Oiwq2M0AzWq-Yv","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 web page's H1 headings for changes and returns current values, change status, before/after diffs, and last-seen timestamp","exampleAgentPrompt":"Keep an eye on the H1 headings at https://example.com/landing for me — check if they've changed since the last time you looked and show me what's different.","exampleUseCases":[{"title":"Competitor landing page headline tracking","prompt":"Watch https://competitor.com for me and let me know if their main headline has changed since last time — show me the old and new H1 text side by side."},{"title":"SEO title change alert for own site","prompt":"Check if the H1 on our homepage https://mysite.com has changed from what it was before, and tell me when it was last seen unchanged."},{"title":"News site headline monitoring","prompt":"Monitor https://techcrunch.com and tell me whether the top H1 heading has changed since you last checked it, and if so, what it changed from and to."}],"resultDescription":"Returns a JSON object containing the current H1 headings extracted from the target page, a boolean 'changed' field indicating whether the content differs from the previous call (retained for 90 days), a list of changed fields with before and after values, and a timestamp of when the page was last seen in its previous state.","failureModes":["Target URL is unreachable or returns a non-200 status — extraction fails with an error","No previous snapshot exists (first call) — changed is false or indeterminate with no before value","Page has no H1 elements — returns an empty array with changed based on prior empty state","90-day snapshot expiry — prior comparison data lost, treated as a fresh baseline","Rate limiting or payment failure — request rejected before extraction occurs"],"whenToPreferThis":"Choose this endpoint when you need to continuously monitor a specific web page's H1 headings and detect when they change over time, with automatic diffing against a stored 90-day snapshot. It is ideal for scheduled polling workflows, competitive intelligence, SEO audits, or content change alerts where you want before/after context without managing your own storage. Prefer it over a plain H1 extraction endpoint when change detection and historical comparison are required, not just current-state retrieval.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-20T12:41:11.265Z","isFirstParty":false,"canonicalSlug":"extract-h1-as-json-watch-7dbce80d"}