{"uid":"cap_lGajBy40JZWQ1Q99WQrpU","slug":"extract-comments-as-json-watch-9e19a53c","name":"extract-comments-as-json-watch","description":"Change watch for extract comments 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. $0.02 per check.","url":"https://page.intel.rallylive.ca/watch/page/comments/json?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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_3fyGyZmE-3cBAtFISzplB","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 HTML comments for changes and returns current extracted comments as JSON along with a diff of what changed since the last check.","exampleAgentPrompt":"Keep an eye on https://example.com for me — specifically watch whether the HTML comments in the page source change, and let me know if anything is different from the last time you checked.","exampleUseCases":[{"title":"Track hidden developer annotations on competitor site","prompt":"Watch https://competitor.com/product-page for any changes in the HTML comments — I want to know if they update any developer notes or hidden metadata embedded in the page source."},{"title":"Alert on CMS template comment changes","prompt":"Monitor https://myclient.com/homepage and tell me if the HTML comments change — our CMS injects build version info in comments and I need to know when a new deployment happens."},{"title":"Detect comment-based A/B test markers","prompt":"Check https://store.example.com/landing for me and compare the HTML comments to the last snapshot — I'm tracking whether their A/B test identifiers hidden in comments have rotated."}],"resultDescription":"Returns a JSON object containing the current extracted HTML comments from the target page, a boolean 'changed' flag indicating whether the comments differ from the previous call, a list of fields that changed with before and after values, and a timestamp of when the page was last seen. The prior result is stored for up to 90 days for comparison.","failureModes":["Target URL is unreachable or returns non-200 status — extraction fails and no comparison is made","No previous result stored (first call for a URL) — 'changed' may not be meaningful, baseline is established","Page has no HTML comments — returns empty results with changed false","URL changes redirect target, causing unexpected comparison baseline mismatch","Rate limiting or payment failure at $0.02 USDC per call prevents execution"],"whenToPreferThis":"Choose this endpoint when you need to monitor a specific web page's HTML comments over time and detect when they change, rather than doing a one-off extraction. It is ideal for automated alerting workflows where you want to schedule recurring checks and receive structured diffs. Prefer this over a bulk or single-extract endpoint when change detection and historical comparison (not just current content) is the primary goal.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-20T18:55:32.055Z","isFirstParty":false,"canonicalSlug":"extract-comments-as-json-watch-9e19a53c"}