{"method":"POST","priceUsd":0.005,"network":"eip155:8453","description":"Recurring webpage monitor for prices, inventory, availability, documentation, policies and competitors. Returns changed/unchanged state, current hash, metadata and HTTP/security context plus a ready next request. Designed for scheduled polling about every 5 minutes.","example":{"url":"https://example.com/","previous_hash":"0000000000000000000000000000000000000000000000000000000000000000"}}