{"name": "shanghai-caojiadu-buildings", "title": "上海曹家渡建筑信息数据集", "description": "Structured buildings dataset for Shanghai Caojiadu (静安区曹家渡): name, address, year, floors, type, coordinates, history.", "license": "commercial / per-request", "access": {"protocol": "x402", "price": {"amount": "0.01", "currency": "USDC", "chain": "Base"}, "endpoint": "/dataset/caojiadu", "canonical_url": "https://data.samye.world/dataset/caojiadu", "method": "GET"}, "preview": "/preview", "tags": ["shanghai", "caojiadu", "buildings", "gis", "heritage", "china"], "update_cadence": "weekly"}