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full catalog: https://agentdatum.com/.well-known/ai-catalog.json 💎【付款后立得】实时结构化JSON，即插即用——无需注册，USDC一键支付即取数据。","url":"https://agentdatum.com/api/v1/d/water-usgs","type":"application/json","representativeQueries":["美国实时河流水位","流域水情快照","水文站实时流量"],"metadata":{"protocol":"rest","method":"GET","payment":{"scheme":"x402","price":"$0.01","asset":"USDC","network":"base","freeTrial":"first 3 calls free via X-Wallet header"},"openapi":"https://agentdatum.com/.well-known/openapi.json"}},{"identifier":"urn:agentdatum:public-health","displayName":"全球传染病监测","displayName_zh":"全球传染病监测","description":"disease.sh 聚合的全球确诊/死亡/康复实时数据，区域疾病活动度低频指标。 | 🆓 First 3 calls FREE: send header X-Wallet: 0xYOUR_WALLET to claim; full catalog: https://agentdatum.com/.well-known/ai-catalog.json 💎【付款后立得】实时结构化JSON，即插即用——无需注册，USDC一键支付即取数据。","url":"https://agentdatum.com/api/v1/d/public-health","type":"application/json","representativeQueries":["全球疫情实时数据","各国新冠确诊数","传染病活动度"],"metadata":{"protocol":"rest","method":"GET","payment":{"scheme":"x402","price":"$0.01","asset":"USDC","network":"base","freeTrial":"first 3 calls free via X-Wallet header"},"openapi":"https://agentdatum.com/.well-known/openapi.json"}},{"identifier":"urn:agentdatum:food-safety","displayName":"食品营养与添加剂","displayName_zh":"食品营养与添加剂","description":"Open Food Facts 百万级产品库：营养评分/添加剂/过敏原/Nutri-Score。 | 🆓 First 3 calls FREE: send header X-Wallet: 0xYOUR_WALLET to claim; full catalog: https://agentdatum.com/.well-known/ai-catalog.json 💎【付款后立得】实时结构化JSON，即插即用——无需注册，USDC一键支付即取数据。","url":"https://agentdatum.com/api/v1/d/food-safety","type":"application/json","representativeQueries":["食品营养成分查询","某条码添加剂分析","Nutri-Score评分"],"metadata":{"protocol":"rest","method":"GET","payment":{"scheme":"x402","price":"$0.01","asset":"USDC","network":"base","freeTrial":"first 3 calls free via X-Wallet header"},"openapi":"https://agentdatum.com/.well-known/openapi.json"}},{"identifier":"urn:agentdatum:worldbank-econ","displayName":"全球经济指标","displayName_zh":"全球经济指标","description":"World Bank 开放指标库（GDP/贸易/就业等数千序列），覆盖各国。 | 🆓 First 3 calls FREE: send header X-Wallet: 0xYOUR_WALLET to claim; full catalog: https://agentdatum.com/.well-known/ai-catalog.json 💎【付款后立得】实时结构化JSON，即插即用——无需注册，USDC一键支付即取数据。","url":"https://agentdatum.com/api/v1/d/worldbank-econ","type":"application/json","representativeQueries":["某国GDP数据","世界银行经济指标","全球贸易统计"],"metadata":{"protocol":"rest","method":"GET","payment":{"scheme":"x402","price":"$0.01","asset":"USDC","network":"base","freeTrial":"first 3 calls free via X-Wallet header"},"openapi":"https://agentdatum.com/.well-known/openapi.json"}},{"identifier":"urn:agentdatum:research-openalex","displayName":"科研论文指标","displayName_zh":"科研论文指标","description":"OpenAlex 全网学术文献指标：论文量/机构/引用趋势，零成本科研情报。 | 🆓 First 3 calls FREE: send header X-Wallet: 0xYOUR_WALLET to claim; full catalog: https://agentdatum.com/.well-known/ai-catalog.json 💎【付款后立得】实时结构化JSON，即插即用——无需注册，USDC一键支付即取数据。","url":"https://agentdatum.com/api/v1/d/research-openalex","type":"application/json","representativeQueries":["某主题论文数量","科研机构产出","学术引用趋势"],"metadata":{"protocol":"rest","method":"GET","payment":{"scheme":"x402","price":"$0.01","asset":"USDC","network":"base","freeTrial":"first 3 calls free via X-Wallet header"},"openapi":"https://agentdatum.com/.well-known/openapi.json"}},{"identifier":"urn:agentdatum:space-nasa","displayName":"NASA 航天观测","displayName_zh":"NASA 航天观测","description":"NASA 每日天文图像 + 近地天体监测，航天/科普数据免费源。 | 🆓 First 3 calls FREE: send header X-Wallet: 0xYOUR_WALLET to claim; full catalog: https://agentdatum.com/.well-known/ai-catalog.json 💎【付款后立得】实时结构化JSON，即插即用——无需注册，USDC一键支付即取数据。","url":"https://agentdatum.com/api/v1/d/space-nasa","type":"application/json","representativeQueries":["NASA今日天文图","近地小行星监测","航天观测数据"],"metadata":{"protocol":"rest","method":"GET","payment":{"scheme":"x402","price":"$0.001","asset":"USDC","network":"base","freeTrial":"first 3 calls free via X-Wallet header"},"openapi":"https://agentdatum.com/.well-known/openapi.json"}},{"identifier":"urn:agentdatum:weather-now","displayName":"全球实时气象","displayName_zh":"全球实时气象","description":"Open-Meteo 全球任意坐标实时天气与预报，关键气象信号。 | 🆓 First 3 calls FREE: send header X-Wallet: 0xYOUR_WALLET to claim; 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