{"sample":true,"live":false,"note":"Representative response shape only. Buy the paid endpoint for current headlines.","example_request":{"topic":"base","limit":5},"example_output":{"topic":"base","limit":10,"match_count":3,"observed_at":"2026-08-04T21:30:00.000Z","sources":{"configured":["CoinDesk","Decrypt","Ethereum Foundation","The Block"],"responsive":["CoinDesk","Decrypt","Ethereum Foundation","The Block"],"failed":[]},"headlines":[{"title":"Example headline","url":"https://publisher.example/story","source":"Publisher","published_at":"2026-08-04T21:00:00.000Z","summary":"Short publisher-provided summary.","categories":["Markets"]}]},"agentcash":{"get":"npx -y agentcash fetch 'https://argonaut-crypto-headline-pulse.vercel.app/api/v1/headlines?topic=base&limit=5' --payment-network base --max-amount 0.007 --yes --format json","post":"npx -y agentcash fetch 'https://argonaut-crypto-headline-pulse.vercel.app/api/v1/headlines' --method POST --body '{\"topic\":\"ethereum\",\"limit\":5}' --header 'content-type: application/json' --payment-network base --max-amount 0.007 --yes --format json"}}