{"slug":"402oracle-com-verify-freshness-89bba2","title":"Is this URL live, and has this page changed?","host":"402oracle.com","method":"POST","resource":"https://402oracle.com/verify/freshness","category":"other","description":"Is this URL live, and has this page changed? Check a URL is up and its data is fresh before your agent acts on its contents, to detect stale data, or to decide whether to invalidate a cache. A freshness oracle and point-in-time uptime and change-detection check: returns HTTP status, Last-Modified/ET","price_listed":0.02,"price_asked":0.02,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":22,"reported_calls_30d":2,"reported_payers_30d":1,"networks":["eip155:137","eip155:42161","eip155:8453"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"body":{"url":"https://example.com/data.json"},"bodyType":"json","method":"POST","type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"properties":{"body":{"properties":{"prior_hash":{"description":"Optional prior SHA-256 hex to compare against","type":"string"},"url":{"description":"Full URL including https://","type":"string"}},"required":["url"],"type":"object"},"bodyType":{"const":"json"},"method":{"enum":["POST"]},"type":{"const":"http"}},"required":["type","method"],"type":"object"},"output":{"properties":{"example":{"type":"object"},"type":{"type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-09-24","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.02,"price_match":true,"latency_ms":22,"error":null}],"description_full":"Is this URL live, and has this page changed? Check a URL is up and its data is fresh before your agent acts on its contents, to detect stale data, or to decide whether to invalidate a cache. A freshness oracle and point-in-time uptime and change-detection check: returns HTTP status, Last-Modified/ETag, a content SHA-256 fingerprint, and whether the content changed versus a prior hash. Returns a signed attestation.","last_updated":"2026-09-20T16:51:42.232Z","schemes":["exact"]}