{
  "name": "The Atlas",
  "what": "A public, read-only graph of places and things. Marin County, California is loaded exhaustively: every parcel, address point, building footprint, road, trail, pipe and drain, every city’s zoning and general plan, every district, hazard zone and natural feature from the county’s GIS; every Overture Maps place, building, address and road segment; every tagged OpenStreetMap feature; every school, licensed health facility, CMS provider and NPI clinician or organization; 2020 Census counts on every block. Each node is an atom; the strict \"inside of\" tree runs Country → State → County → CensusTract → CensusBlockGroup → CensusBlock → the things located in a block; cities, ZIP areas, school and legislative districts overlap instead of nesting and are edges. Every atom names its source (URL, read time, sha256).",
  "totals": {
    "atoms": 1872470,
    "by_kind": [
      {
        "kind": "Permit",
        "n": 356695
      },
      {
        "kind": "Form",
        "n": 328798
      },
      {
        "kind": "Building",
        "n": 229359
      },
      {
        "kind": "Website",
        "n": 146989
      },
      {
        "kind": "Address",
        "n": 113150
      },
      {
        "kind": "AddressRecord",
        "n": 113036
      },
      {
        "kind": "Infrastructure",
        "n": 97521
      },
      {
        "kind": "Parcel",
        "n": 96254
      },
      {
        "kind": "NaturalFeature",
        "n": 85895
      },
      {
        "kind": "RoadSegment",
        "n": 43634
      },
      {
        "kind": "Profile",
        "n": 31634
      },
      {
        "kind": "LocalBusiness",
        "n": 24952
      },
      {
        "kind": "HazardZone",
        "n": 16969
      },
      {
        "kind": "CodeCase",
        "n": 16316
      },
      {
        "kind": "License",
        "n": 16235
      },
      {
        "kind": "FederalRecipient",
        "n": 13574
      },
      {
        "kind": "Path",
        "n": 10141
      },
      {
        "kind": "GovernmentWebsite",
        "n": 9404
      },
      {
        "kind": "WebPage",
        "n": 9275
      },
      {
        "kind": "Listing",
        "n": 9139
      },
      {
        "kind": "Zone",
        "n": 7300
      },
      {
        "kind": "PlanArea",
        "n": 6737
      },
      {
        "kind": "Person",
        "n": 6658
      },
      {
        "kind": "GoogleReview",
        "n": 5932
      },
      {
        "kind": "Clinician",
        "n": 5384
      },
      {
        "kind": "Property",
        "n": 5334
      },
      {
        "kind": "GooglePlace",
        "n": 4246
      },
      {
        "kind": "Opportunity",
        "n": 4068
      },
      {
        "kind": "PropertyListing",
        "n": 3422
      },
      {
        "kind": "Park",
        "n": 3352
      },
      {
        "kind": "CensusBlock",
        "n": 3264
      },
      {
        "kind": "BusinessEmail",
        "n": 3100
      },
      {
        "kind": "Trail",
        "n": 3052
      },
      {
        "kind": "SourceCall",
        "n": 2796
      },
      {
        "kind": "TransitStop",
        "n": 2775
      },
      {
        "kind": "Store",
        "n": 2748
      },
      {
        "kind": "Healthcare",
        "n": 2658
      },
      {
        "kind": "FoodEstablishment",
        "n": 2146
      },
      {
        "kind": "Lodging",
        "n": 2062
      },
      {
        "kind": "Recreation",
        "n": 1952
      },
      {
        "kind": "MilePost",
        "n": 1948
      },
      {
        "kind": "LandUse",
        "n": 1767
      },
      {
        "kind": "Place",
        "n": 1726
      },
      {
        "kind": "FoodFacility",
        "n": 1653
      },
      {
        "kind": "Parking",
        "n": 1610
      },
      {
        "kind": "Amenity",
        "n": 1590
      },
      {
        "kind": "HealthcareOrganization",
        "n": 1472
      },
      {
        "kind": "Bikeway",
        "n": 1235
      },
      {
        "kind": "LandContract",
        "n": 1152
      },
      {
        "kind": "School",
        "n": 1106
      },
      {
        "kind": "Residence",
        "n": 1005
      },
      {
        "kind": "District",
        "n": 935
      },
      {
        "kind": "GovernmentOrganization",
        "n": 930
      },
      {
        "kind": "GovernmentContact",
        "n": 881
      },
      {
        "kind": "AutoBusiness",
        "n": 865
      },
      {
        "kind": "ShortTermRental",
        "n": 791
      },
      {
        "kind": "Attraction",
        "n": 697
      },
      {
        "kind": "Historic",
        "n": 409
      },
      {
        "kind": "Profession",
        "n": 302
      },
      {
        "kind": "PlaceOfWorship",
        "n": 277
      },
      {
        "kind": "DirectoryWebsite",
        "n": 272
      },
      {
        "kind": "MedicalOrganization",
        "n": 196
      },
      {
        "kind": "CensusBlockGroup",
        "n": 181
      },
      {
        "kind": "EmergencyAsset",
        "n": 180
      },
      {
        "kind": "NamedPlace",
        "n": 118
      },
      {
        "kind": "ServiceProvider",
        "n": 91
      },
      {
        "kind": "FireStation",
        "n": 88
      },
      {
        "kind": "RailSegment",
        "n": 85
      },
      {
        "kind": "Boundary",
        "n": 84
      },
      {
        "kind": "SoftwareSystem",
        "n": 72
      },
      {
        "kind": "CensusTract",
        "n": 63
      },
      {
        "kind": "GovernmentFacility",
        "n": 60
      },
      {
        "kind": "County",
        "n": 59
      },
      {
        "kind": "Hospital",
        "n": 55
      },
      {
        "kind": "Community",
        "n": 48
      },
      {
        "kind": "ContactRecord",
        "n": 36
      },
      {
        "kind": "Division",
        "n": 35
      },
      {
        "kind": "ZCTA",
        "n": 34
      },
      {
        "kind": "PoliceStation",
        "n": 33
      },
      {
        "kind": "ShoppingCenter",
        "n": 32
      },
      {
        "kind": "Project",
        "n": 30
      },
      {
        "kind": "NewsWebsite",
        "n": 29
      },
      {
        "kind": "Official",
        "n": 27
      },
      {
        "kind": "City",
        "n": 27
      },
      {
        "kind": "SchoolDistrict",
        "n": 27
      },
      {
        "kind": "CensusDesignatedPlace",
        "n": 24
      },
      {
        "kind": "TransitRoute",
        "n": 24
      },
      {
        "kind": "Military",
        "n": 24
      },
      {
        "kind": "NursingFacility",
        "n": 24
      },
      {
        "kind": "Library",
        "n": 23
      },
      {
        "kind": "CountySubdivision",
        "n": 15
      },
      {
        "kind": "HomeHealthAgency",
        "n": 12
      },
      {
        "kind": "PUMA",
        "n": 9
      },
      {
        "kind": "Organization",
        "n": 8
      },
      {
        "kind": "AssemblyDistrict",
        "n": 6
      },
      {
        "kind": "Platform",
        "n": 4
      },
      {
        "kind": "StateSenateDistrict",
        "n": 4
      },
      {
        "kind": "CongressionalDistrict",
        "n": 4
      },
      {
        "kind": "MetroDivision",
        "n": 3
      },
      {
        "kind": "MetroArea",
        "n": 3
      },
      {
        "kind": "Agency",
        "n": 2
      },
      {
        "kind": "DialysisFacility",
        "n": 2
      },
      {
        "kind": "HospiceAgency",
        "n": 2
      },
      {
        "kind": "Waterway",
        "n": 2
      },
      {
        "kind": "Airport",
        "n": 2
      },
      {
        "kind": "State",
        "n": 1
      },
      {
        "kind": "CombinedStatisticalArea",
        "n": 1
      },
      {
        "kind": "UrbanArea",
        "n": 1
      },
      {
        "kind": "Country",
        "n": 1
      }
    ],
    "edges": [
      {
        "rel": "within",
        "n": 2797864
      },
      {
        "rel": "links_to",
        "n": 855336
      },
      {
        "rel": "issued_by",
        "n": 388734
      },
      {
        "rel": "publishes",
        "n": 322570
      },
      {
        "rel": "permit_for",
        "n": 271141
      },
      {
        "rel": "on_parcel",
        "n": 239274
      },
      {
        "rel": "same_as",
        "n": 224747
      },
      {
        "rel": "located_at",
        "n": 112992
      },
      {
        "rel": "lists",
        "n": 54943
      },
      {
        "rel": "in_collection",
        "n": 37831
      },
      {
        "rel": "overlaps",
        "n": 36661
      },
      {
        "rel": "has_profile",
        "n": 33027
      },
      {
        "rel": "has_form",
        "n": 22692
      },
      {
        "rel": "on_platform",
        "n": 21824
      },
      {
        "rel": "located_on",
        "n": 20789
      },
      {
        "rel": "holds_license",
        "n": 16235
      },
      {
        "rel": "has_website",
        "n": 10210
      },
      {
        "rel": "returned",
        "n": 10128
      },
      {
        "rel": "site_of",
        "n": 8881
      },
      {
        "rel": "about",
        "n": 8728
      },
      {
        "rel": "has_profession",
        "n": 7982
      },
      {
        "rel": "performed",
        "n": 7550
      },
      {
        "rel": "in_county",
        "n": 6894
      },
      {
        "rel": "documented_by",
        "n": 6025
      },
      {
        "rel": "authored_by",
        "n": 5932
      },
      {
        "rel": "review_of_place",
        "n": 5932
      },
      {
        "rel": "describes",
        "n": 4246
      },
      {
        "rel": "concerns",
        "n": 4068
      },
      {
        "rel": "named_on",
        "n": 3979
      },
      {
        "rel": "associated_with",
        "n": 3979
      },
      {
        "rel": "business_contact_for",
        "n": 3554
      },
      {
        "rel": "has_listing",
        "n": 3409
      },
      {
        "rel": "listing_of",
        "n": 2798
      },
      {
        "rel": "professional_presence_in",
        "n": 2679
      },
      {
        "rel": "rental_on",
        "n": 790
      },
      {
        "rel": "case_on",
        "n": 471
      },
      {
        "rel": "contracted_by",
        "n": 147
      },
      {
        "rel": "serves_area",
        "n": 131
      },
      {
        "rel": "part_of",
        "n": 108
      },
      {
        "rel": "commutes_to",
        "n": 75
      },
      {
        "rel": "uses_system",
        "n": 72
      },
      {
        "rel": "operated_by",
        "n": 52
      },
      {
        "rel": "governed_by",
        "n": 51
      },
      {
        "rel": "has_authority_over",
        "n": 30
      },
      {
        "rel": "site",
        "n": 19
      },
      {
        "rel": "represents",
        "n": 11
      },
      {
        "rel": "borders",
        "n": 6
      },
      {
        "rel": "serves",
        "n": 5
      },
      {
        "rel": "member_of",
        "n": 5
      }
    ],
    "sources": 34158,
    "updated": "2026-11-02T07:24:43.439Z"
  },
  "tree": [
    "Country",
    "State",
    "County",
    "CensusTract",
    "CensusBlockGroup",
    "CensusBlock"
  ],
  "licenses": [
    "US Census Bureau TIGER/Line: public domain",
    "OpenStreetMap: © OpenStreetMap contributors, ODbL 1.0 (https://www.openstreetmap.org/copyright)"
  ],
  "queries": [
    {
      "what": "a point: the block → country chain, the parcel, the buildings, zoning, plan areas, hazard zones, districts, city and community it is in",
      "method": "GET",
      "url": "https://miscsubjects.com/atlas/at?lat=38.1074&lon=-122.5697"
    },
    {
      "what": "one parcel by APN, with its addresses, buildings, zoning, districts and hazards as edges",
      "method": "GET",
      "url": "https://miscsubjects.com/atlas/lookup?system=apn&value=143-011-01"
    },
    {
      "what": "one atom: its facts, parent, every ancestor, its children by kind, its edges and its source",
      "method": "GET",
      "url": "https://miscsubjects.com/atlas/atoms/atm_geoid_06041"
    },
    {
      "what": "one atom with its outline (simplify in degrees, 0 = exact)",
      "method": "GET",
      "url": "https://miscsubjects.com/atlas/atoms/atm_geoid_city_0652582?geometry=1&simplify=0.0001"
    },
    {
      "what": "the atoms directly inside one atom",
      "method": "GET",
      "url": "https://miscsubjects.com/atlas/atoms/atm_geoid_06041/children?limit=100"
    },
    {
      "what": "everything inside one atom at any depth, of one kind",
      "method": "GET",
      "url": "https://miscsubjects.com/atlas/atoms/atm_geoid_06041/descendants?kind=Hospital"
    },
    {
      "what": "everything inside a city (an overlapping area), of one kind",
      "method": "GET",
      "url": "https://miscsubjects.com/atlas/atoms/atm_geoid_city_0652582/inside?kind=FoodEstablishment"
    },
    {
      "what": "the chain of ancestors",
      "method": "GET",
      "url": "https://miscsubjects.com/atlas/atoms/atm_geoid_060411022032003/ancestors"
    },
    {
      "what": "typed edges, out of or into an atom",
      "method": "GET",
      "url": "https://miscsubjects.com/atlas/atoms/atm_geoid_060411022032003/edges"
    },
    {
      "what": "atoms near a point (radius up to 10,000 m), nearest first",
      "method": "GET",
      "url": "https://miscsubjects.com/atlas/near?lat=38.1074&lon=-122.5697&radius_m=800&kind=FoodEstablishment"
    },
    {
      "what": "search by name, optionally inside one atom",
      "method": "GET",
      "url": "https://miscsubjects.com/atlas/search?q=hospital&within=atm_geoid_06041"
    },
    {
      "what": "counts by kind inside one atom",
      "method": "GET",
      "url": "https://miscsubjects.com/atlas/kinds?within=atm_geoid_city_0652582"
    },
    {
      "what": "a subgraph: an atom, its children and its edges, as nodes and links",
      "method": "GET",
      "url": "https://miscsubjects.com/atlas/graph?start=atm_geoid_city_0652582&limit=200"
    },
    {
      "what": "where a fact came from",
      "method": "GET",
      "url": "https://miscsubjects.com/atlas/sources/<source_id>"
    },
    {
      "what": "an atom by an outside id (geoid, osm)",
      "method": "GET",
      "url": "https://miscsubjects.com/atlas/lookup?system=geoid&value=06041"
    }
  ],
  "parameters": {
    "limit": "1–500, default 100",
    "offset": "for paging",
    "kind": "one kind from by_kind",
    "geometry": "1 to include outlines in lists",
    "simplify": "degrees of simplification for outlines, 0–0.01"
  },
  "schema": {
    "atom": "id, kind, name, parent_id, depth, geometry (GeoJSON), facts (JSON), source_id, updated_at",
    "edge": "src, rel (within | overlaps | …), dst, share, source_id",
    "source": "id, url, license, read_at, sha256"
  }
}