{
  "openapi": "3.1.0",
  "info": {
    "title": "PainMap public read-only data contract",
    "version": "2026-05-31",
    "description": "Static API contract for PainMap place, dataset, provenance, catalog, and geometry exports. Current production endpoints are static files."
  },
  "servers": [
    {
      "url": "https://painmap.org"
    }
  ],
  "paths": {
    "/data/provenance-registry.json": {
      "get": {
        "summary": "Get dataset, source, license, method, and uncertainty registry",
        "responses": {
          "200": {
            "description": "Provenance registry JSON",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/ProvenanceRegistry"
                }
              }
            }
          }
        }
      }
    },
    "/data/place-measurements.json": {
      "get": {
        "summary": "Get representative place-level pain-source proxy measurements",
        "responses": {
          "200": {
            "description": "Place measurements JSON",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/PlaceMeasurements"
                }
              }
            }
          }
        }
      }
    },
    "/data/place-measurements.csv": {
      "get": {
        "summary": "Get representative place-level measurements as CSV",
        "responses": {
          "200": {
            "description": "Place measurements CSV",
            "content": {
              "text/csv": {
                "schema": {
                  "type": "string"
                }
              }
            }
          }
        }
      }
    },
    "/data/places.geojson": {
      "get": {
        "summary": "Get representative place features for the atlas contract",
        "responses": {
          "200": {
            "description": "GeoJSON feature collection",
            "content": {
              "application/geo+json": {
                "schema": {
                  "$ref": "#/components/schemas/FeatureCollection"
                }
              }
            }
          }
        }
      }
    },
    "/data/dcat.json": {
      "get": {
        "summary": "Get DCAT-style dataset catalog",
        "responses": {
          "200": {
            "description": "Dataset catalog JSON",
            "content": {
              "application/ld+json": {
                "schema": {
                  "type": "object"
                }
              }
            }
          }
        }
      }
    }
  },
  "components": {
    "schemas": {
      "ProvenanceRegistry": {
        "type": "object",
        "required": ["build", "methodClasses", "uncertaintyClasses", "licenses", "datasets"],
        "properties": {
          "build": {
            "type": "object"
          },
          "methodClasses": {
            "type": "array",
            "items": {
              "type": "object"
            }
          },
          "uncertaintyClasses": {
            "type": "array",
            "items": {
              "type": "object"
            }
          },
          "licenses": {
            "type": "array",
            "items": {
              "type": "object"
            }
          },
          "datasets": {
            "type": "array",
            "items": {
              "type": "object"
            }
          }
        }
      },
      "PlaceMeasurements": {
        "type": "object",
        "required": ["build", "measurements"],
        "properties": {
          "build": {
            "type": "object"
          },
          "measurements": {
            "type": "array",
            "items": {
              "$ref": "#/components/schemas/PlaceMeasurement"
            }
          }
        }
      },
      "PlaceMeasurement": {
        "type": "object",
        "required": ["place_id", "place_name", "geometry_level", "layer_id", "layer_type", "source_vintage", "method_note", "uncertainty_class", "license_id"],
        "properties": {
          "place_id": {
            "type": "string"
          },
          "place_name": {
            "type": "string"
          },
          "geometry_level": {
            "type": "string"
          },
          "layer_id": {
            "type": "string"
          },
          "layer_type": {
            "enum": ["direct", "modeled", "proxy", "boundary"]
          },
          "source_vintage": {
            "type": "string"
          },
          "method_note": {
            "type": "string"
          },
          "uncertainty_class": {
            "enum": ["moderate", "low", "very-low"]
          },
          "license_id": {
            "type": "string"
          }
        }
      },
      "FeatureCollection": {
        "type": "object",
        "required": ["type", "features"],
        "properties": {
          "type": {
            "const": "FeatureCollection"
          },
          "features": {
            "type": "array",
            "items": {
              "type": "object"
            }
          }
        }
      }
    }
  }
}