Added value: +{
+  "description": "Details only: the URA Good Class Bungalow area a landed home stands in, from its location, such as Kilburn Estate; null outside every area. The Ministry of Law has approved no foreign buyer, PRs included, for one since 2021.",
+  "type": [
+    "string",
+    "null"
+  ]
+}

Added value: +{
+  "description": "Details only, for a sale listing: the financing figures its web page shows at the asking price and lease, for a Singapore citizen's first home with no other loans. primary is the bank loan; options adds the HDB loan for an HDB flat when its lease allows one. grossIncomeNeeded is the monthly income a loan needs under incomeLimitLabel (MSR for an HDB flat, else TDSR) at stressRatePct. buyerStampDuty, legalFees and totalUpfront (down payment, BSD and legal fees, no ABSD) are in S$. buyerAge is the youngest buyer's age assumed; estimate_mortgage_options takes another age or residency. Null for a rental.",
+  "properties": {
+    "buyerAge": {
+      "type": "integer"
+    },
+    "buyerStampDuty": {
+      "type": "number"
+    },
+    "cpfUsagePct": {
+      "type": "number"
+    },
+    "legalFees": {
+      "type": "number"
+    },
+    "options": {
+      "items": {
+        "additionalProperties": true,
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "primary": {
+      "additionalProperties": true,
+      "type": "object"
+    },
+    "remainingLeaseYears": {
+      "type": [
+        "number",
+        "null"
+      ]
+    },
+    "totalUpfront": {
+      "type": "number"
+    }
+  },
+  "required": [
+    "primary",
+    "totalUpfront"
+  ],
+  "type": [
+    "object",
+    "null"
+  ]
+}

Added value: +{
+  "description": "Details and compare: the id asked for when it is one portal's listing of this home, such as an agent's own listing from search_agents, which Homejourney shows as this listing (id). platform and price are that portal's; sourceAgents names each portal's agent. Use id for viewings and saves.",
+  "properties": {
+    "id": {
+      "format": "uuid",
+      "type": "string"
+    },
+    "platform": {
+      "type": "string"
+    },
+    "price": {
+      "type": [
+        "number",
+        "null"
+      ]
+    }
+  },
+  "type": "object"
+}

Previous value: -"Search only: this result stands for listingCount listings one agent lists at one address (scope address) or in one development (scope development), itself and otherListingIds, priced minPrice to maxPrice. Absent for a listing no other on the page joins. The listings may be different homes, since an agent can list two flats in one block; pass an id to get_listing_details to tell them apart."New value: +"Search only: this result stands for listingCount listings one agent lists at one address (scope address) or in one development (scope development), itself and otherListingIds, priced minPrice to maxPrice. Absent for a listing no other on this page or the next joins. The listings may be different homes, since an agent can list two flats in one block; pass an id to get_listing_details to tell them apart."

Added value: +{
+  "description": "Present when some of them are on the next page: how many are on this one. The next page leaves those out and names this result in continuedClusters.",
+  "minimum": 1,
+  "type": "integer"
+}

Added value: +{
+  "description": "Search only: this result stands for listingCount listings one agent lists at one address (scope address) or in one development (scope development), itself and otherListingIds, priced minPrice to maxPrice. Absent for a listing no other on the page joins. The listings may be different homes, since an agent can list two flats in one block; pass an id to get_listing_details to tell them apart.",
+  "properties": {
+    "listingCount": {
+      "minimum": 2,
+      "type": "integer"
+    },
+    "maxPrice": {
+      "type": [
+        "number",
+        "null"
+      ]
+    },
+    "minPrice": {
+      "type": [
+        "number",
+        "null"
+      ]
+    },
+    "otherListingIds": {
+      "items": {
+        "type": "string"
+      },
+      "type": "array"
+    },
+    "scope": {
+      "enum": [
+        "address",
+        "development"
+      ],
+      "type": "string"
+    }
+  },
+  "required": [
+    "listingCount",
+    "otherListingIds",
+    "scope"
+  ],
+  "type": "object"
+}

Added value: +{
+  "description": "For an HDB flat without hdbFlatType: why its type is unverified. no_block and no_block_records: its block has no HDB resale records yet; no_size_match: its size matches no flat type in its block's records; ambiguous: its size fits more than one flat type in its block; no_size: the listing gives no floor area.",
+  "type": "string"
+}

Previous value: -"Each listing also carries its rank, reasonCodes and reasons (the same reasons in plain words), tradeoffs, and score out of 100 over the criteria given that its data answers, or null when it answers none or none were given; scoreBreakdown gives each criterion its points of maxPoints, or null points when the data cannot answer it (also listed in missingData)."New value: +"Each listing also carries its rank, reasonCodes and reasons (the same reasons in plain words), tradeoffs, and score out of 100 over the criteria given that its data answers, or null when it answers none or none were given; scoreBreakdown gives each criterion its points of maxPoints, or null points when the data cannot answer it (also listed in missingData). nearestPreschools lists the three nearest ECDA-licensed childcare centres, kindergartens and early years centres within 1 km (name, place, distanceKm, walkMinutes); credit \"Contains information from ECDA\" when you show them."

Previous value: -"Details only: the places the listing page shows near the block. mrtStations (code, name, walkMinutes), futureStations (stations under construction within 1.5 km: name, lines, openingYear as LTA expects it or null when not dated, walkMinutes), primarySchoolsWithin1Km and primarySchools1To2Km (the Primary 1 registration bands), secondarySchools, supermarkets, hawkerCentres (within 2 km) and clinics (CHAS clinics within 1 km, type gp or dental), the last three with name, place and walkMinutes, parks (NParks parks within 1 km of their nearest edge: name, areaHectares, walkMinutes), malls (shopping malls within 2 km from OpenStreetMap: name, walkMinutes; credit \"© OpenStreetMap contributors\" when you show them) and busStops (LTA bus stops within 400 m: code, name, place as the road, services as the bus numbers that call there, walkMinutes; credit \"Contains information from LTA DataMall\" when you show them), each with distanceKm. Distances are straight-line from the block and walks are estimates; for Primary 1 registration, the user checks the exact distance on OneMap SchoolQuery."New value: +"Details only: the places the listing page shows near the block. mrtStations (code, name, walkMinutes), futureStations (stations under construction within 1.5 km: name, lines, openingYear as LTA expects it or null when not dated, walkMinutes), primarySchoolsWithin1Km and primarySchools1To2Km (the Primary 1 registration bands), secondarySchools, supermarkets, hawkerCentres (within 2 km) and clinics (CHAS clinics within 1 km, type gp or dental), the last three with name, place and walkMinutes, parks (NParks parks within 1 km of their nearest edge: name, areaHectares, walkMinutes), malls (shopping malls within 2 km from OpenStreetMap: name, walkMinutes; credit \"© OpenStreetMap contributors\" when you show them), busStops (LTA bus stops within 400 m: code, name, place as the road, services as the bus numbers that call there, walkMinutes; credit \"Contains information from LTA DataMall\" when you show them) and preschools (ECDA-licensed childcare centres, kindergartens and early years centres within 1 km: name, place, walkMinutes; credit \"Contains information from ECDA\" when you show them), each with distanceKm. Distances are straight-line from the block and walks are estimates; for Primary 1 registration, the user checks the exact distance on OneMap SchoolQuery."

Previous value: -"Each listing also carries its rank, reasonCodes, tradeoffs, and score out of 100 over the criteria given that its data answers, or null when it answers none or none were given; scoreBreakdown gives each criterion its points of maxPoints, or null points when the data cannot answer it (also listed in missingData)."New value: +"Each listing also carries its rank, reasonCodes and reasons (the same reasons in plain words), tradeoffs, and score out of 100 over the criteria given that its data answers, or null when it answers none or none were given; scoreBreakdown gives each criterion its points of maxPoints, or null points when the data cannot answer it (also listed in missingData)."

Previous value: -"Details only: for an owner listing, the listing page with its Report this listing form open, where the user tells Homejourney the details or photos are wrong, it isn't the owner's, it's gone or it looks like a scam. The user sends the report themselves; null for other listings."New value: +"Details only: for an owner listing, the listing page with its Report this listing form open, where the user tells Homejourney the details or photos are wrong, it isn't the owner's, it's gone or it looks like a scam. For a flat its owner lists on HDB Flat Portal, the same form takes only that it's gone or its details are wrong. The user sends the report themselves; null for other listings."

Added value: +{
+  "description": "Search with school only: {name, distanceKm}, that school and its straight-line distance from the block, or null when the home does not list it nearby. For Primary 1 registration, the user checks the exact distance on OneMap SchoolQuery.",
+  "type": [
+    "object",
+    "null"
+  ]
+}

Added value: +"One of HDB, Condominium, Executive Condominium, Landed. Common words such as Condo, EC, Apartment, HDB flat or Bungalow are read as these."

Previous value: -"Details only: the places the listing page shows near the block. mrtStations (code, name, walkMinutes), futureStations (stations under construction within 1.5 km: name, lines, openingYear as LTA expects it or null when not dated, walkMinutes), primarySchoolsWithin1Km and primarySchools1To2Km (the Primary 1 registration bands), secondarySchools, supermarkets, hawkerCentres (within 2 km) and clinics (CHAS clinics within 1 km, type gp or dental), the last three with name, place and walkMinutes, parks (NParks parks within 1 km of their nearest edge: name, areaHectares, walkMinutes) and malls (shopping malls within 2 km from OpenStreetMap: name, walkMinutes; credit \"© OpenStreetMap contributors\" when you show them), each with distanceKm. Distances are straight-line from the block and walks are estimates; for Primary 1 registration, the user checks the exact distance on OneMap SchoolQuery."New value: +"Details only: the places the listing page shows near the block. mrtStations (code, name, walkMinutes), futureStations (stations under construction within 1.5 km: name, lines, openingYear as LTA expects it or null when not dated, walkMinutes), primarySchoolsWithin1Km and primarySchools1To2Km (the Primary 1 registration bands), secondarySchools, supermarkets, hawkerCentres (within 2 km) and clinics (CHAS clinics within 1 km, type gp or dental), the last three with name, place and walkMinutes, parks (NParks parks within 1 km of their nearest edge: name, areaHectares, walkMinutes), malls (shopping malls within 2 km from OpenStreetMap: name, walkMinutes; credit \"© OpenStreetMap contributors\" when you show them) and busStops (LTA bus stops within 400 m: code, name, place as the road, services as the bus numbers that call there, walkMinutes; credit \"Contains information from LTA DataMall\" when you show them), each with distanceKm. Distances are straight-line from the block and walks are estimates; for Primary 1 registration, the user checks the exact distance on OneMap SchoolQuery."

Previous value: -"Where the user asks for a viewing."New value: +"Where the user asks for a viewing. Absent when that page takes no request: the owner books on a portal (reach.bookOn says where) or no request reaches anyone."

Previous value: -"Details and compare: the house rules the listing states, such as {\"pets\": false, \"cooking\": true} (true allowed, false not allowed) or rules in words such as [\"no_smoking\"]. Empty or null when it states none."New value: +"Details and compare: the house rules the listing states, such as {\"pets\": false, \"cooking\": true} (true allowed, false not allowed) or rules in words such as [\"no_smoking\"]. An owner rental may add \"tenants\", who the owner says the home suits (families, couples, working_professionals, students); none is no preference. Empty or null when it states none."

Added value: +"The whole home's bathrooms; for a let room, read room.ownBathroom."

Added value: +{
+  "additionalProperties": true,
+  "description": "For a rental that lets a master room, common room or bed space: the room itself, which its card shows in place of the flat's bathrooms and floor area. Null for a whole home, a studio or a sale.",
+  "properties": {
+    "label": {
+      "description": "Master room, Common room or Bed space.",
+      "type": "string"
+    },
+    "ownBathroom": {
+      "description": "True for an attached bathroom, false for a shared one, null when not stated.",
+      "type": [
+        "boolean",
+        "null"
+      ]
+    },
+    "squareFeet": {
+      "description": "The room's own size; null when not stated, never the flat's.",
+      "type": [
+        "number",
+        "null"
+      ]
+    }
+  },
+  "required": [
+    "label"
+  ],
+  "type": [
+    "object",
+    "null"
+  ]
+}

Added value: +"Floor area. An owner's let room gives the flat's here; read room.squareFeet for the room's own size."

Previous value: -"Each listing also carries its rank, reasonCodes, tradeoffs, and score out of 100 over the criteria given that its data answers; scoreBreakdown gives each criterion its points of maxPoints, or null points when the data cannot answer it (also listed in missingData)."New value: +"Each listing also carries its rank, reasonCodes, tradeoffs, and score out of 100 over the criteria given that its data answers, or null when it answers none or none were given; scoreBreakdown gives each criterion its points of maxPoints, or null points when the data cannot answer it (also listed in missingData)."

Added value: +{
+  "description": "The unavailable ids of listings taken off the market (sold, withdrawn or archived).",
+  "items": {
+    "type": "string"
+  },
+  "type": "array"
+}

Added value: +{
+  "description": "Suggestions for what the user usually does next, best first. Each names the tool to call or the page to open; none is taken without the user asking, and a tool that writes still needs their confirmation.",
+  "items": {
+    "additionalProperties": false,
+    "properties": {
+      "action": {
+        "type": "string"
+      },
+      "tool": {
+        "type": "string"
+      },
+      "url": {
+        "format": "uri",
+        "type": "string"
+      },
+      "why": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "action",
+      "why"
+    ],
+    "type": "object"
+  },
+  "maxItems": 3,
+  "type": "array"
+}

Previous value: -"Details only: the places the listing page shows near the block. mrtStations (code, name, walkMinutes), futureStations (stations under construction within 1.5 km: name, lines, openingYear as LTA expects it or null when not dated, walkMinutes), primarySchoolsWithin1Km and primarySchools1To2Km (the Primary 1 registration bands), secondarySchools, supermarkets, hawkerCentres (within 2 km) and clinics (CHAS clinics within 1 km, type gp or dental), the last three with name, place and walkMinutes, and parks (NParks parks within 1 km of their nearest edge: name, areaHectares, walkMinutes), each with distanceKm. Distances are straight-line from the block and walks are estimates; for Primary 1 registration, the user checks the exact distance on OneMap SchoolQuery."New value: +"Details only: the places the listing page shows near the block. mrtStations (code, name, walkMinutes), futureStations (stations under construction within 1.5 km: name, lines, openingYear as LTA expects it or null when not dated, walkMinutes), primarySchoolsWithin1Km and primarySchools1To2Km (the Primary 1 registration bands), secondarySchools, supermarkets, hawkerCentres (within 2 km) and clinics (CHAS clinics within 1 km, type gp or dental), the last three with name, place and walkMinutes, parks (NParks parks within 1 km of their nearest edge: name, areaHectares, walkMinutes) and malls (shopping malls within 2 km from OpenStreetMap: name, walkMinutes; credit \"© OpenStreetMap contributors\" when you show them), each with distanceKm. Distances are straight-line from the block and walks are estimates; for Primary 1 registration, the user checks the exact distance on OneMap SchoolQuery."

Added value: +{
+  "type": [
+    "string",
+    "null"
+  ]
+}

Added value: +{
+  "description": "Who wrote description: generated means Homejourney wrote it from the listing's photos and data, so say so when quoting it and never present it as the lister's words; listing means the lister wrote it; null with no description.",
+  "enum": [
+    "generated",
+    "listing",
+    null
+  ],
+  "type": [
+    "string",
+    "null"
+  ]
+}

Added value: +{
+  "description": "Details only, for a rental: the most people who may live in the home or room, 1 to 20. Null when not stated.",
+  "type": [
+    "integer",
+    "null"
+  ]
+}

Added value: +{
+  "description": "Details only, for a rental: whether the rent includes utilities (true) or not (false). Null when the listing does not say.",
+  "type": [
+    "boolean",
+    "null"
+  ]
+}

Added value: +{
+  "description": "Details only: for an owner listing, the listing page with its Report this listing form open, where the user tells Homejourney the details or photos are wrong, it isn't the owner's, it's gone or it looks like a scam. The user sends the report themselves; null for other listings.",
+  "format": "uri",
+  "type": [
+    "string",
+    "null"
+  ]
+}

Previous value: -"Details only: the places the listing page shows near the block. mrtStations (code, name, walkMinutes), futureStations (stations under construction within 1.5 km: name, lines, openingYear as LTA expects it or null when not dated, walkMinutes), primarySchoolsWithin1Km and primarySchools1To2Km (the Primary 1 registration bands), secondarySchools, supermarkets, hawkerCentres (within 2 km) and clinics (CHAS clinics within 1 km, type gp or dental), the last three with name, place and walkMinutes, each with distanceKm. Distances are straight-line from the block and walks are estimates; for Primary 1 registration, the user checks the exact distance on OneMap SchoolQuery."New value: +"Details only: the places the listing page shows near the block. mrtStations (code, name, walkMinutes), futureStations (stations under construction within 1.5 km: name, lines, openingYear as LTA expects it or null when not dated, walkMinutes), primarySchoolsWithin1Km and primarySchools1To2Km (the Primary 1 registration bands), secondarySchools, supermarkets, hawkerCentres (within 2 km) and clinics (CHAS clinics within 1 km, type gp or dental), the last three with name, place and walkMinutes, and parks (NParks parks within 1 km of their nearest edge: name, areaHectares, walkMinutes), each with distanceKm. Distances are straight-line from the block and walks are estimates; for Primary 1 registration, the user checks the exact distance on OneMap SchoolQuery."

Previous value: -"Each listing also carries its rank, score, reasonCodes and tradeoffs."New value: +"Each listing also carries its rank, reasonCodes, tradeoffs, and score out of 100 over the criteria given that its data answers; scoreBreakdown gives each criterion its points of maxPoints, or null points when the data cannot answer it (also listed in missingData)."

Previous value: -"Details only: the places the listing page shows near the block. mrtStations (code, name, walkMinutes), primarySchoolsWithin1Km and primarySchools1To2Km (the Primary 1 registration bands), secondarySchools, supermarkets, hawkerCentres (within 2 km) and clinics (CHAS clinics within 1 km, type gp or dental), the last three with name, place and walkMinutes, each with distanceKm. Distances are straight-line from the block and walks are estimates; for Primary 1 registration, the user checks the exact distance on OneMap SchoolQuery."New value: +"Details only: the places the listing page shows near the block. mrtStations (code, name, walkMinutes), futureStations (stations under construction within 1.5 km: name, lines, openingYear as LTA expects it or null when not dated, walkMinutes), primarySchoolsWithin1Km and primarySchools1To2Km (the Primary 1 registration bands), secondarySchools, supermarkets, hawkerCentres (within 2 km) and clinics (CHAS clinics within 1 km, type gp or dental), the last three with name, place and walkMinutes, each with distanceKm. Distances are straight-line from the block and walks are estimates; for Primary 1 registration, the user checks the exact distance on OneMap SchoolQuery."

Previous value: -"Search results only, for an HDB flat: its flat type, such as 4-room or executive, inferred from its block's resale records and its size."New value: +"For an HDB flat in search, details and compare: its flat type, such as 4-room or executive, inferred from its block's resale records and its size. Absent when no single type matches, so treat that flat's type as unverified and never infer it from bedrooms."

Previous value: -"Details only, for an owner rental: the security deposit in months of rent, as the owner stated it. Null when not stated; partner listings carry none."New value: +"Details and compare, for an owner rental: the security deposit in months of rent, as the owner stated it. Null when not stated; partner listings carry none."

Added value: +{
+  "description": "Details and compare: the house rules the listing states, such as {\"pets\": false, \"cooking\": true} (true allowed, false not allowed) or rules in words such as [\"no_smoking\"]. Empty or null when it states none.",
+  "type": [
+    "object",
+    "array",
+    "null"
+  ]
+}

Added value: +{
+  "description": "Ids left out because another source lists the same home, which is compared once under the first id given.",
+  "items": {
+    "type": "string"
+  },
+  "type": "array"
+}

Previous value: -"Fewest whole years of lease that must remain, read from an HDB flat's block lease. Freehold and 999-year tenures always meet it."New value: +"Fewest whole years of lease that must remain, read from each home's lease: an HDB flat's block lease, or a condo, EC or landed home's land lease. Freehold and 999-year tenures always meet it."

Previous value: -"Details and compare, for an HDB flat: its block's lease start year, the lease left this month and the block's age in years, from HDB resale records. Null when unknown."New value: +"Details and compare, for an HDB flat: its block's lease start year, the lease left this month and the block's age in years, as in lease; kept for earlier clients. Null when unknown."

Added value: +{
+  "description": "Search, compare and details, for every home: its tenure, the lease left this month and its age from TOP, as the listing page shows them. An HDB flat's lease comes from its block's resale records; a condo, EC or landed home's from URA's records of its land lease, not its TOP. remainingLabel is 'Lease start not confirmed' for a leasehold whose start is not found, and null for freehold and 999-year homes. Null when nothing is known.",
+  "properties": {
+    "ageLabel": {
+      "description": "Such as 26 years.",
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "ageYears": {
+      "minimum": 0,
+      "type": [
+        "integer",
+        "null"
+      ]
+    },
+    "completionYear": {
+      "description": "TOP or the year completed.",
+      "type": [
+        "integer",
+        "null"
+      ]
+    },
+    "freehold": {
+      "type": "boolean"
+    },
+    "leaseYears": {
+      "description": "99, 103 or 999; null for freehold.",
+      "type": [
+        "integer",
+        "null"
+      ]
+    },
+    "remainingLabel": {
+      "description": "Such as 72 years 10 months.",
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "remainingMonths": {
+      "maximum": 11,
+      "minimum": 0,
+      "type": [
+        "integer",
+        "null"
+      ]
+    },
+    "remainingYears": {
+      "minimum": 0,
+      "type": [
+        "integer",
+        "null"
+      ]
+    },
+    "startYear": {
+      "description": "The year the lease began; null when not confirmed.",
+      "type": [
+        "integer",
+        "null"
+      ]
+    },
+    "tenureLabel": {
+      "description": "Such as 99-year lease from 2000, or Freehold; null when the tenure is not known.",
+      "type": [
+        "string",
+        "null"
+      ]
+    }
+  },
+  "required": [
+    "freehold"
+  ],
+  "type": [
+    "object",
+    "null"
+  ]
+}

Added value: +{
+  "description": "Search results only, for an HDB flat: its flat type, such as 4-room or executive, inferred from its block's resale records and its size.",
+  "type": "string"
+}

Added value: +{
+  "description": "Fewest whole years of lease that must remain, read from an HDB flat's block lease. Freehold and 999-year tenures always meet it.",
+  "maximum": 99,
+  "minimum": 1,
+  "type": "integer"
+}

Previous value: -"Details only, for an HDB flat: its block's lease start year, the lease left this month and the block's age in years, from HDB resale records. Null when unknown."New value: +"Details and compare, for an HDB flat: its block's lease start year, the lease left this month and the block's age in years, from HDB resale records. Null when unknown."

Added value: +{
+  "description": "Details only, for an owner rental: the security deposit in months of rent, as the owner stated it. Null when not stated; partner listings carry none.",
+  "type": [
+    "number",
+    "null"
+  ]
+}

Added value: +{
+  "description": "Details only: the owner's own words on why the home is priced as it is.",
+  "type": [
+    "string",
+    "null"
+  ]
+}

Added value: +{
+  "description": "Details only, for an HDB flat: its block's lease start year, the lease left this month and the block's age in years, from HDB resale records. Null when unknown.",
+  "properties": {
+    "ageYears": {
+      "minimum": 0,
+      "type": "integer"
+    },
+    "remainingMonths": {
+      "maximum": 11,
+      "minimum": 0,
+      "type": "integer"
+    },
+    "remainingYears": {
+      "minimum": 0,
+      "type": "integer"
+    },
+    "startYear": {
+      "type": "integer"
+    }
+  },
+  "required": [
+    "startYear",
+    "remainingYears",
+    "remainingMonths",
+    "ageYears"
+  ],
+  "type": [
+    "object",
+    "null"
+  ]
+}

Previous value: -"Details only, for an owner listing: whether the owner verified with Singpass, and their weekly viewing hours (Singapore time, weekday 0 is Sunday; empty when none are open)."New value: +"Details only, for an owner listing: whether the owner verified with Singpass, their weekly viewing hours (Singapore time, weekday 0 is Sunday; empty when none are open), and how many minutes they usually take to first answer a viewing request (null until they have answered at least 3)."

Added value: +{
+  "minimum": 1,
+  "type": [
+    "integer",
+    "null"
+  ]
+}

Previous value: -"Details only: the places the listing page shows near the block. mrtStations (code, name, walkMinutes), primarySchoolsWithin1Km and primarySchools1To2Km (the Primary 1 registration bands), secondarySchools, and supermarkets (name, place, walkMinutes), each with distanceKm. Distances are straight-line from the block and walks are estimates; for Primary 1 registration, the user checks the exact distance on OneMap SchoolQuery."New value: +"Details only: the places the listing page shows near the block. mrtStations (code, name, walkMinutes), primarySchoolsWithin1Km and primarySchools1To2Km (the Primary 1 registration bands), secondarySchools, supermarkets, hawkerCentres (within 2 km) and clinics (CHAS clinics within 1 km, type gp or dental), the last three with name, place and walkMinutes, each with distanceKm. Distances are straight-line from the block and walks are estimates; for Primary 1 registration, the user checks the exact distance on OneMap SchoolQuery."

Added value: +{
+  "description": "Details only: which way the main windows face, as the owner states it (N, NE, E, SE, S, SW, W or NW).",
+  "type": [
+    "string",
+    "null"
+  ]
+}

Added value: +{
+  "description": "Details only: HDB flat model.",
+  "type": [
+    "string",
+    "null"
+  ]
+}

Added value: +{
+  "description": "Details only: the year the owner last renovated.",
+  "type": [
+    "integer",
+    "null"
+  ]
+}

Added value: +{
+  "description": "Details only: HDB's three-storey band, such as 13 to 15, never the exact storey.",
+  "type": [
+    "string",
+    "null"
+  ]
+}

Added value: +{
+  "description": "Details only, for an owner listing: whether the owner verified with Singpass, and their weekly viewing hours (Singapore time, weekday 0 is Sunday; empty when none are open).",
+  "properties": {
+    "role": {
+      "enum": [
+        "owner"
+      ],
+      "type": "string"
+    },
+    "singpassVerified": {
+      "type": "boolean"
+    },
+    "viewingHours": {
+      "items": {
+        "properties": {
+          "endsAt": {
+            "description": "HH:MM",
+            "type": "string"
+          },
+          "startsAt": {
+            "description": "HH:MM",
+            "type": "string"
+          },
+          "weekday": {
+            "maximum": 6,
+            "minimum": 0,
+            "type": "integer"
+          }
+        },
+        "type": "object"
+      },
+      "type": "array"
+    }
+  },
+  "type": [
+    "object",
+    "null"
+  ]
+}

Added value: +{
+  "description": "Details only: the places the listing page shows near the block. mrtStations (code, name, walkMinutes), primarySchoolsWithin1Km and primarySchools1To2Km (the Primary 1 registration bands), secondarySchools, and supermarkets (name, place, walkMinutes), each with distanceKm. Distances are straight-line from the block and walks are estimates; for Primary 1 registration, the user checks the exact distance on OneMap SchoolQuery.",
+  "type": [
+    "object",
+    "null"
+  ]
+}

Added value: +{
+  "description": "Details only.",
+  "type": [
+    "integer",
+    "null"
+  ]
+}

Added value: +{
+  "description": "Details only: published floor plan image URLs.",
+  "items": {
+    "format": "uri",
+    "type": "string"
+  },
+  "type": "array"
+}

Added value: +{
+  "description": "When the listing was first shown publicly.",
+  "format": "date-time",
+  "type": [
+    "string",
+    "null"
+  ]
+}

Added value: +{
+  "description": "One per image, in order: the tag to show with an owner's edited photo, or null for an unedited one.",
+  "items": {
+    "enum": [
+      "Virtually staged",
+      "Decluttered",
+      null
+    ],
+    "type": [
+      "string",
+      "null"
+    ]
+  },
+  "type": "array"
+}

Added value: +"The AI app making this call, such as chatgpt or claude. It records where the request came from; it is not the listing owner or agent."

Previous value: -nullNew value: +{
+  "additionalProperties": true,
+  "properties": {
+    "data": {
+      "additionalProperties": true,
+      "properties": {
+        "criteriaSummary": {
+          "type": "string"
+        },
+        "listings": {
+          "description": "Each listing also carries its rank, score, reasonCodes and tradeoffs.",
+          "items": {
+            "additionalProperties": true,
+            "properties": {
+              "address": {
+                "type": [
+                  "string",
+                  "null"
+                ]
+              },
+              "bathrooms": {
+                "type": [
+                  "number",
+                  "null"
+                ]
+              },
+              "bedrooms": {
+                "type": [
+                  "number",
+                  "null"
+                ]
+              },
+              "bookingUrl": {
+                "description": "Where the user asks for a viewing.",
+                "format": "uri",
+                "type": "string"
+              },
+              "canonicalUrl": {
+                "format": "uri",
+                "type": "string"
+              },
+              "district": {
+                "description": "Singapore postal district number.",
+                "type": [
+                  "string",
+                  "null"
+                ]
+              },
+              "id": {
+                "format": "uuid",
+                "type": "string"
+              },
+              "listingType": {
+                "description": "For Sale or For Rent.",
+                "type": [
+                  "string",
+                  "null"
+                ]
+              },
+              "price": {
+                "description": "SGD; monthly rent for a rental.",
+                "type": [
+                  "number",
+                  "null"
+                ]
+              },
+              "propertyType": {
+                "type": [
+                  "string",
+                  "null"
+                ]
+              },
+              "squareFeet": {
+                "type": [
+                  "number",
+                  "null"
+                ]
+              },
+              "title": {
+                "type": [
+                  "string",
+                  "null"
+                ]
+              }
+            },
+            "required": [
+              "id"
+            ],
+            "type": "object"
+          },
+          "type": "array"
+        },
+        "missingDataNotes": {
+          "items": {
+            "type": "string"
+          },
+          "type": "array"
+        },
+        "ranking": {
+          "items": {
+            "additionalProperties": true,
+            "type": "object"
+          },
+          "type": "array"
+        },
+        "unavailableListingIds": {
+          "items": {
+            "type": "string"
+          },
+          "type": "array"
+        }
+      },
+      "required": [
+        "listings"
+      ],
+      "type": "object"
+    }
+  },
+  "required": [
+    "data"
+  ],
+  "type": "object"
+}