{"uid":"cap_pXx6_NSh68Ki1ZYIUYgXu","slug":"cache-headers-check-watch-c6a2f98e","name":"Cache Headers Check Watch","description":"Change watch for cache headers check: runs the check and compares it with the result from your previous call for the same url (kept 90 days), returning the current answer, changed true/false, exactly which fields changed with before/after values, and when it was last seen. Call it on a schedule to be told when caching headers check changes. $0.01 per check.","url":"https://intel.rallylive.ca/watch/site/cache-headers","method":"GET","headers":{},"bodySchema":{"type":"object","$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_MNMPR3VFVwMYn9RS_2W0b","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 URL's HTTP caching headers over time and returns a diff when they change, compared against the previous check result stored for 90 days.","exampleAgentPrompt":"Check if the caching headers on https://example.com have changed since the last time you checked, and tell me exactly which fields changed and what the before and after values were.","exampleUseCases":[{"title":"CDN cache config drift alert","prompt":"Keep an eye on https://shop.mystore.com and let me know whenever its Cache-Control or Vary headers change — I want to know exactly what changed and what the values were before and after."},{"title":"Post-deployment cache header validation","prompt":"After we deployed this morning, check whether the caching headers on https://app.mycompany.com/api/products have changed compared to what they were before, and show me any differences."},{"title":"Scheduled SEO cache monitoring","prompt":"Set up a recurring check on https://myblog.com so I get alerted any time the cache headers change — include the before and after values for each field that's different."}],"resultDescription":"Returns the current cache headers check result for the URL, a boolean 'changed' flag indicating whether results differ from the previous call, a field-level diff listing exactly which headers changed with before/after values, and a timestamp of when the result was last seen. Previous results are retained for 90 days.","failureModes":["URL is unreachable or returns a non-200 response — check may fail or return empty headers","No previous result stored (first call) — 'changed' will be false or indeterminate with no diff","URL missing from input — request rejected with validation error","Rate limits or payment issues — call rejected before check is performed","Headers present but identical to previous call — changed returns false with empty diff"],"whenToPreferThis":"Use this endpoint when you need to detect changes in HTTP caching headers for a specific URL over time, especially on a scheduled basis. Prefer it over a one-shot cache headers check when you want automatic diffing and change detection without managing state yourself. It is ideal for alerting workflows, CI/CD post-deploy validation, or SEO monitoring where you care about the delta between checks rather than just the current state.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T07:22:01.191Z","isFirstParty":false}