{"uid":"cap_yVnUU9vwmjb-s7e9ornZ7","slug":"extract-h2-as-json-watch-8899ebd1","name":"extract-h2-as-json-watch","description":"Change watch for extract h2 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. $0.02 per check.","url":"https://page.intel.rallylive.ca/watch/page/h2/json?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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_8aP-R8iGpoSy3BcboPhcH","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 webpage's H2 headings for changes and returns current H2 data, a changed flag, before/after diffs, and last-seen timestamp.","exampleAgentPrompt":"Keep an eye on https://example.com for me — check if any of the H2 headings have changed since the last time you looked, and tell me what's different along with the current headings as JSON.","exampleUseCases":[{"title":"Competitor product page headline tracker","prompt":"Watch https://competitor.com/products and let me know whenever their H2 headings change — I want to see what changed, the before and after text, and when it was last checked."},{"title":"News site section heading monitor","prompt":"Check https://bbc.com/news to see if any H2 headings have changed since your last visit, and return the current headings along with any differences you find."},{"title":"Documentation site structure alert","prompt":"Monitor https://docs.myplatform.com/api for any changes to H2 headings — if something changed, show me the before and after values so I can see what sections were added or renamed."}],"resultDescription":"Returns a JSON object containing the current H2 headings extracted from the page, a boolean 'changed' field indicating whether they differ from the previous call for the same URL, a list of fields that changed with before and after values, and a timestamp of when the state was last seen. The previous state is retained for 90 days.","failureModes":["URL is unreachable or returns non-200 status — check may fail or return empty H2 data","No prior snapshot exists for the URL — first call establishes baseline, 'changed' will be false","Page has no H2 headings — returns empty array with changed false","Prior snapshot expired after 90 days — treated as a new baseline","Rate limiting or payment failure for the $0.02 USDC per-call fee"],"whenToPreferThis":"Use this endpoint when you need to detect changes specifically in H2 headings of a webpage over time, rather than a one-off extraction. It is ideal for scheduling recurring checks, as it maintains a 90-day history per URL and returns structured diffs showing exactly what changed and when. Prefer it over a plain H2 extraction endpoint when your goal is change alerting or audit trails.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-20T18:56:38.404Z","isFirstParty":false,"canonicalSlug":"extract-h2-as-json-watch-8899ebd1"}