{"uid":"cap_FJkxce7ysZTAtiPAJpUgn","slug":"extract-tel-links-as-json-change-watch-56ed7423","name":"Extract Tel Links as JSON – Change Watch","description":"Change watch for extract tel links 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. $0.02 per check.","url":"https://page.intel.rallylive.ca/watch/page/tel-links/json?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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_yfD7SgBf1ftHDeGgsy2rL","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 telephone links (tel: hrefs) for changes, returning current extracted data, a changed flag, before/after diffs, and last-seen timestamp.","exampleAgentPrompt":"Keep an eye on the contact page at acme.com and let me know if any of the phone number (tel:) links change — I want to know what they were before and what they are now.","exampleUseCases":[{"title":"Business phone number change alert","prompt":"Watch the contact page at example-clinic.com and alert me if any of the clickable phone numbers change — I need to know the old and new values immediately."},{"title":"Competitor contact info monitoring","prompt":"Check whether any telephone links on my competitor's homepage have changed since last time I checked, and show me a before/after comparison if they have."},{"title":"Automated site audit for tel link changes","prompt":"Run a change check on the support page at shop.mystore.com and tell me if any tel: links were added, removed, or updated compared to the previous snapshot."}],"resultDescription":"Returns a JSON object containing the current extracted telephone links from the target page, a boolean 'changed' field indicating whether the data differs from the previous check, a list of fields that changed with their before and after values, and a timestamp of when the data was last seen. Previous check results are retained for 90 days.","failureModes":["Target URL unreachable or returns non-200 status — extraction fails with error","No previous check exists for this URL — 'changed' cannot be computed on first call","Tel links present in dynamic/JavaScript-rendered content may not be extracted if page is not fully rendered","Payment of $0.02 USDC not fulfilled — request rejected","90-day retention window exceeded — previous snapshot no longer available for comparison"],"whenToPreferThis":"Choose this endpoint when you need to detect changes specifically in telephone (tel:) link elements on a webpage over time, rather than a one-shot extraction. It is ideal for scheduled monitoring workflows where you want to be alerted when phone contact information is added, removed, or modified, and need a structured before/after diff rather than just the current state.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-20T18:55:50.839Z","isFirstParty":false,"canonicalSlug":"extract-tel-links-as-json-change-watch-56ed7423"}