{
  "name": "Leadspanic neighborhood data API",
  "description": "Who lives where in the U.S., by census tract: 85,381 tracts clustered into 63 neighborhood personas, plus which personas buy which local services. Built for AI agents doing local market research, site selection and campaign planning.",
  "payment": {
    "protocol": "MPP (Machine Payments Protocol, HTTP 402). Spec: https://mpp.dev",
    "methods": [
      "stripe card (Shared Payment Token)"
    ],
    "currency": "usd"
  },
  "endpoints": {
    "neighborhood": {
      "method": "GET",
      "path": "/v1/neighborhood",
      "price_usd": "0.05",
      "summary": "Who lives at a U.S. point: the census-tract persona, income, age, and lifestyle profile.",
      "params": {
        "lat": "latitude (required)",
        "lon": "longitude (required)"
      }
    },
    "area": {
      "method": "GET",
      "path": "/v1/area",
      "price_usd": "0.10",
      "summary": "Customer mix within a radius: population, dominant persona, and every persona present with its share of tracts.",
      "params": {
        "lat": "latitude (required)",
        "lon": "longitude (required)",
        "radius_miles": "1-10, default 3"
      }
    },
    "fit": {
      "method": "GET",
      "path": "/v1/fit",
      "price_usd": "0.25",
      "summary": "Which personas in a radius are most likely to buy a given local service, ranked by propensity.",
      "params": {
        "lat": "latitude (required)",
        "lon": "longitude (required)",
        "radius_miles": "1-10, default 3",
        "category": "service category, e.g. \"Home Services\" (required)",
        "sub_category": "e.g. \"Roofing\" (required)"
      }
    }
  },
  "example": "GET https://data.leadspanic.com/v1/area?lat=35.2271&lon=-80.8431&radius_miles=3",
  "human_site": "https://leadspanic.com",
  "terms": "https://leadspanic.com/legal/terms-of-service"
}