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    "title": "FHFA House Price Index API — US State, Metro & National HPI",
    "description": "FHFA House Price Index (HPI) as data: purchase-only, all-transactions and expanded-data indexes for the US, census divisions, states and 400+ metro areas, monthly and quarterly from 1975. Filter by place, level and year. No API key. Part of NexGen Signal — official-source data products",
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            "title": "Places",
            "type": "array",
            "description": "FHFA place IDs or exact place names, e.g. USA, CA (California), DV_PAC (Pacific Division), 10180 (Abilene, TX metro). Leave empty for all.",
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          "placeNameContains": {
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            "title": "Maximum records",
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            "description": "Stop after this many index values (each is charged once).",
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