{"uid":"cap_p7y3ubDQg0aT6OfVrYvlR","slug":"extract-stylesheets-as-json-change-watch-db21d2a3","name":"Extract Stylesheets as JSON – Change Watch","description":"Change watch for extract stylesheets 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. $0.02 per check.","url":"https://page.intel.rallylive.ca/watch/page/stylesheets/json?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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_oYngtNfHo7z_t2Rr-HV71","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 stylesheets (as JSON) for changes, returning a diff with before/after values and a changed flag each time it is polled.","exampleAgentPrompt":"Keep an eye on the stylesheets loaded by https://example.com for me — run the check now and tell me if anything changed since the last time we looked, and show me exactly what's different.","exampleUseCases":[{"title":"Detect unauthorized stylesheet injection","prompt":"Watch https://myshop.com for any stylesheet changes — if a new CSS file gets added or an existing one is removed, I want to know immediately so I can catch any potential malicious injection."},{"title":"Track competitor design refresh","prompt":"Check https://competitor.com right now and tell me if their stylesheets have changed since the last check — I'm trying to spot when they update their site design."},{"title":"Automated CI stylesheet regression alert","prompt":"Poll https://staging.myapp.com and let me know if the stylesheets look different from the last time you checked — I want to catch any accidental CSS regressions before we ship."}],"resultDescription":"Returns the current extracted stylesheets as JSON, a boolean 'changed' flag, a list of fields that changed with their before and after values, and a timestamp of when the page was last seen. Previous results are retained for 90 days for comparison.","failureModes":["Target URL is unreachable or returns an error — check may fail or return no data","No prior result stored (first call) — 'changed' will be false or undefined as there is no baseline","URL returns dynamic or randomized stylesheets — may produce false positives on every call","90-day retention window exceeded — baseline is lost and comparison resets"],"whenToPreferThis":"Choose this endpoint when you need to detect changes in a web page's stylesheets over time rather than simply extracting them once. It is ideal for scheduled monitoring, alerting pipelines, or regression detection where knowing what changed (and the before/after diff) matters more than a one-off extraction. Prefer the non-watch extract endpoint if you only need the current snapshot without change comparison.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-20T18:57:03.710Z","isFirstParty":false,"canonicalSlug":"extract-stylesheets-as-json-change-watch-db21d2a3"}