{"slug":"35-253-195-79-sslip-io-changed-81f6a9","title":"Has a monitored public document changed since a given time?","host":"35-253-195-79.sslip.io","method":"GET","resource":"https://35-253-195-79.sslip.io/changed","category":"other","description":"Has a monitored public document changed since a given time? Returns a cached, timestamped observation of the City of Oakland stale-check list PDF: changed true/false/null plus content hash and observation age. Call with `since` (ISO 8601) to learn whether the file changed after that moment without d","price_listed":0.001,"price_asked":null,"state":"no_terms","state_label":"Answers HTTP 404 without x402 payment terms","checks_7d":1,"answered_7d":0,"latency_ms_median":null,"reported_calls_30d":1,"reported_payers_30d":1,"networks":["eip155:84532"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"method":"GET","queryParams":{"since":"2026-10-01T00:00:00Z","url":"https://www.oaklandca.gov/files/assets/city/v/1/finance/documents/stale-check/city-of-oakland-stale-check-list-as-of-080526.pdf"},"type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"properties":{"since":{"description":"ISO 8601 timestamp; answer is whether the document changed after it","type":"string"},"url":{"description":"Monitored document URL (Test 0 monitors one URL; omit to use it)","type":"string"}},"required":["since"],"type":"object"},"type":{"const":"http","type":"string"}},"required":["type","method"],"type":"object"},"output":{"properties":{"example":{"properties":{"changed":{"type":["boolean","null"]},"content_hash":{"type":["string","null"]},"coverage_start":{"type":["string","null"]},"monitored":{"type":"boolean"},"observation_age_seconds":{"type":["integer","null"]},"observed_at":{"type":["string","null"]},"reason":{"type":"string"},"status":{"enum":["ok","stale","no_observation","not_covered","ambiguous","bad_request","not_monitored"],"type":"string"}},"type":"object"},"type":{"type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-10-01","reachable":true,"status":404,"valid_402":false,"asked_usdc":null,"price_match":null,"latency_ms":772,"error":null}],"description_full":"Has a monitored public document changed since a given time? Returns a cached, timestamped observation of the City of Oakland stale-check list PDF: changed true/false/null plus content hash and observation age. Call with `since` (ISO 8601) to learn whether the file changed after that moment without downloading it. Answers null when observation coverage cannot support a claim.","last_updated":"2026-09-30T23:44:34.545Z","schemes":["exact"]}