{"sample_type":"static_contract_fixture","endpoint":{"path":"/v1/monitors/source-change","price":"$1.00","payment":"x402 v2 USDC on Base"},"request":{"url":"https://www.sec.gov/newsroom/press-releases","label":"SEC press releases"},"service":{"duration_days":30,"check_interval_seconds":21600,"supported_content":["HTML","JSON","plain text","XML"],"maximum_response_bytes":1000000,"delivery":["authenticated polling","optional signed webhook"]},"response_shape":{"monitor_id":"mon_example","status":"ACTIVE","access_token":"returned after successful payment","status_url":"https://evidence.regulavita.com/v1/monitors/mon_example"},"limitations":["Public HTTPS sources only.","No JavaScript rendering, login, cookies, or redirect following."]}