{"authority_contract_version":"2026-10-27.v1","endpoints":[{"method":"GET","params":["lang"],"path":"/api/public/properties"},{"method":"GET","params":["lang"],"path":"/api/public/properties/:id"},{"method":"GET","params":["lang"],"path":"/api/public/ai-feed"}],"entities":{"house_type":{"description":"Public house-type facts without internal IDs. Unknown is not zero; zero bedrooms is a confirmed studio.","properties":{"area":{"nullable":true,"type":"number"},"bathroom_count":{"nullable":true,"type":"integer"},"bedroom_count":{"nullable":true,"type":"integer"},"livingroom_count":{"nullable":true,"type":"integer"},"name":{"nullable":true,"type":"string"},"plan_image_url":{"nullable":true,"type":"string"}},"type":"object"},"property":{"fields":[{"name":"address","nullable":true,"public":true,"type":"string"},{"name":"alias","nullable":true,"public":true,"type":"string"},{"name":"architectural_style","nullable":true,"public":true,"type":"string"},{"name":"available_listing_count","nullable":null,"public":true,"type":"integer"},{"name":"avg_building_distance","nullable":true,"public":true,"type":"number"},{"name":"building_count","nullable":true,"public":true,"type":"integer"},{"name":"business_district_name","nullable":true,"public":true,"type":"string"},{"name":"canonical_path","nullable":null,"public":true,"type":"string"},{"name":"cold_water_fee","nullable":true,"public":true,"type":"number"},{"name":"delivery_date","nullable":true,"public":true,"type":"string"},{"name":"developer","nullable":true,"public":true,"type":"string"},{"name":"district_code","nullable":true,"public":true,"type":"string"},{"name":"district_name","nullable":true,"public":true,"type":"string"},{"name":"electricity_fee","nullable":true,"public":true,"type":"number"},{"name":"floor_area_ratio","nullable":true,"public":true,"type":"number"},{"name":"floor_height","nullable":true,"public":true,"type":"number"},{"name":"gas_fee","nullable":true,"public":true,"type":"number"},{"name":"grade","nullable":true,"public":true,"type":"string"},{"name":"greening_rate","nullable":true,"public":true,"type":"number"},{"name":"has_clubhouse","nullable":true,"public":true,"type":"string"},{"name":"has_elevator","nullable":true,"public":true,"type":"string"},{"name":"has_gym","nullable":true,"public":true,"type":"string"},{"name":"has_natural_gas","nullable":true,"public":true,"type":"boolean"},{"name":"has_pool","nullable":true,"public":true,"type":"string"},{"name":"heating_fee","nullable":true,"public":true,"type":"number"},{"name":"heating_type","nullable":true,"public":true,"type":"string"},{"name":"hot_water_fee","nullable":true,"public":true,"type":"number"},{"name":"house_type_count","nullable":null,"public":true,"type":"integer"},{"name":"house_types","nullable":null,"public":true,"type":"array"},{"name":"household_count","nullable":true,"public":true,"type":"integer"},{"name":"id","nullable":null,"public":true,"type":"string"},{"name":"land_acquisition_date","nullable":true,"public":true,"type":"string"},{"name":"land_area","nullable":true,"public":true,"type":"number"},{"name":"max_rent","nullable":true,"public":true,"type":"number"},{"name":"min_rent","nullable":true,"public":true,"type":"number"},{"name":"missing","nullable":null,"public":true,"type":"array"},{"name":"name","nullable":true,"public":true,"type":"string"},{"name":"name_en","nullable":true,"public":true,"type":"string"},{"name":"parking_count","nullable":true,"public":true,"type":"integer"},{"name":"parking_management_fee","nullable":true,"public":true,"type":"number"},{"name":"parking_ratio","nullable":true,"public":true,"type":"string"},{"name":"parking_rent","nullable":true,"public":true,"type":"number"},{"name":"power_supply","nullable":true,"public":true,"type":"string"},{"name":"property_company","nullable":true,"public":true,"type":"string"},{"name":"property_fee","nullable":true,"public":true,"type":"number"},{"name":"property_ref","nullable":null,"public":true,"type":"string"},{"name":"property_type","nullable":true,"public":true,"type":"string"},{"name":"property_years","nullable":true,"public":true,"type":"string"},{"name":"publication_version","nullable":null,"public":true,"type":"string"},{"name":"published_lang","nullable":null,"public":true,"type":"string"},{"name":"sort_order","nullable":null,"public":true,"type":"integer"},{"name":"transport","nullable":null,"public":true,"type":"object"},{"name":"verification_status","nullable":null,"public":true,"type":"string"},{"name":"water_supply","nullable":true,"public":true,"type":"string"}]}},"identity":"id remains a decimal-string legacy URL identity; property_ref is the canonical business-property: reference. Never infer identity from equal integers.","never_exposed":["room numbers","exact floors","raw notes","metadata","source and confidence","old asset translations","user and package relationships"],"not_enabled":["serviced_apartment","villa","siheyuan","commercial","hotel","/api/public/apartment-version/:id"],"publication_version":"authority_channel_v1","retired":["/api/property-notes"],"scope":{"channel_only":"Website placement, API/feed visibility, ordering and stable legacy URLs. No asset facts or listing approval.","content_language":"Current governed Chinese facts; an en request reports language_fallback=true rather than using old translations.","freshness":"generated_at is response time, not fact verification or update time.","rule":"Channel placement intersects the current rentpro_business property publication and listing approval.","zero_stock":"Published property pages remain available with zero current public listings."},"version":"2.0.0"}