{"service": "上海市静安区曹家渡建筑信息数据集 (Shanghai Caojiadu Buildings Dataset)", "description": "面向 AI agent 的结构化建筑信息数据集，涵盖曹家渡地区楼宇名称、地址、年代、层数、用途、坐标、历史沿革。", "pricing": {"per_request_usdc": "0.01", "protocol": "x402 (HTTP 402 + USDC on Base)"}, "endpoints": {"GET /preview": "免费样本预览", "GET /dataset/caojiadu": "全量数据集 (付费 0.01 USDC)", "GET /dataset/caojiadu/{id}": "单条建筑 (付费 0.01 USDC)", "GET /.well-known/ai-dataset": "dataset card", "GET /openapi.json": "OpenAPI 描述"}, "update_cadence": "weekly (按年补充历史建筑)"}