{"accepts":["x402"],"currency":"USDC","network":"base","domains":[{"id":"ai","label":"AI","description":"real-time AI news, LLMs, machine learning research, robotics, model releases, AI infrastructure","url":"https://signalsfeed.com/api/v1/ai"},{"id":"semiconductor","label":"Semiconductor","description":"semiconductor news, chips, fabs, GPUs, foundries, supply chain, export controls, AI hardware","url":"https://signalsfeed.com/api/v1/semiconductor"},{"id":"macro","label":"Macro","description":"macroeconomic news, central banks, interest rates, inflation, fiscal policy, trade, markets","url":"https://signalsfeed.com/api/v1/macro"}],"pricing":{"free":"GET /api/v1/{domain}?since={timestamp} -- title list","paid":"GET /api/v1/{domain}?ids={id1,id2,...} -- $0.01 per request (up to 20 items)"}}