openapi: 3.1.0 info: title: RadiationService API version: 1.0.0 paths: /api/radiation/v1/list-radiation-observations: get: tags: - RadiationService summary: ListRadiationObservations description: ListRadiationObservations retrieves normalized EPA RadNet and Safecast readings. operationId: ListRadiationObservations parameters: - name: max_items in: query description: Maximum items to return (1-25). Zero uses the service default. required: false schema: type: integer format: int32 responses: "200": description: Successful response content: application/json: schema: $ref: '#/components/schemas/ListRadiationObservationsResponse' "400": description: Validation error content: application/json: schema: $ref: '#/components/schemas/ValidationError' default: description: Error response content: application/json: schema: $ref: '#/components/schemas/Error' components: schemas: Error: type: object properties: message: type: string description: Error message (e.g., 'user not found', 'database connection failed') description: Error is returned when a handler encounters an error. It contains a simple error message that the developer can customize. FieldViolation: type: object properties: field: type: string description: The field path that failed validation (e.g., 'user.email' for nested fields). For header validation, this will be the header name (e.g., 'X-API-Key') description: type: string description: Human-readable description of the validation violation (e.g., 'must be a valid email address', 'required field missing') required: - field - description description: FieldViolation describes a single validation error for a specific field. ValidationError: type: object properties: violations: type: array items: $ref: '#/components/schemas/FieldViolation' description: List of validation violations required: - violations description: ValidationError is returned when request validation fails. It contains a list of field violations describing what went wrong. ListRadiationObservationsRequest: type: object properties: maxItems: type: integer format: int32 description: Maximum items to return (1-25). Zero uses the service default. description: ListRadiationObservationsRequest specifies optional result limits. ListRadiationObservationsResponse: type: object properties: observations: type: array items: $ref: '#/components/schemas/RadiationObservation' fetchedAt: type: integer format: int64 description: 'Time the service synthesized the response, as Unix epoch milliseconds.. Warning: Values > 2^53 may lose precision in JavaScript' epaCount: type: integer format: int32 description: Number of EPA RadNet observations included. safecastCount: type: integer format: int32 description: Number of Safecast observations included. anomalyCount: type: integer format: int32 description: Total observations classified above normal. elevatedCount: type: integer format: int32 description: Observations classified as elevated. spikeCount: type: integer format: int32 description: Observations classified as spike-level anomalies. corroboratedCount: type: integer format: int32 description: Observations corroborated by more than one source. lowConfidenceCount: type: integer format: int32 description: Observations that remain low-confidence after synthesis. conflictingCount: type: integer format: int32 description: Observations where contributing sources materially disagree. convertedFromCpmCount: type: integer format: int32 description: Observations whose normalized value was derived from CPM. description: ListRadiationObservationsResponse contains normalized readings plus coverage metadata. RadiationObservation: type: object properties: id: type: string maxLength: 160 minLength: 1 description: Unique source-specific observation identifier. source: type: string enum: - RADIATION_SOURCE_UNSPECIFIED - RADIATION_SOURCE_EPA_RADNET - RADIATION_SOURCE_SAFECAST description: RadiationSource identifies the upstream measurement network. locationName: type: string description: Human-readable location label. country: type: string description: Country or territory label. location: $ref: '#/components/schemas/GeoCoordinates' value: type: number format: double description: Dose equivalent rate normalized to nSv/h. unit: type: string description: Display unit, currently always nSv/h after normalization. observedAt: type: integer format: int64 description: 'Time the observation was recorded, as Unix epoch milliseconds.. Warning: Values > 2^53 may lose precision in JavaScript' freshness: type: string enum: - RADIATION_FRESHNESS_UNSPECIFIED - RADIATION_FRESHNESS_LIVE - RADIATION_FRESHNESS_RECENT - RADIATION_FRESHNESS_HISTORICAL description: RadiationFreshness groups observations by recency. baselineValue: type: number format: double description: Rolling baseline for this station in nSv/h. delta: type: number format: double description: Current reading minus rolling baseline in nSv/h. zScore: type: number format: double description: Standard deviation distance from the rolling baseline. severity: type: string enum: - RADIATION_SEVERITY_UNSPECIFIED - RADIATION_SEVERITY_NORMAL - RADIATION_SEVERITY_ELEVATED - RADIATION_SEVERITY_SPIKE description: RadiationSeverity classifies whether a reading is behaving normally. contributingSources: type: array items: type: string enum: - RADIATION_SOURCE_UNSPECIFIED - RADIATION_SOURCE_EPA_RADNET - RADIATION_SOURCE_SAFECAST description: RadiationSource identifies the upstream measurement network. confidence: type: string enum: - RADIATION_CONFIDENCE_UNSPECIFIED - RADIATION_CONFIDENCE_LOW - RADIATION_CONFIDENCE_MEDIUM - RADIATION_CONFIDENCE_HIGH description: RadiationConfidence represents how strongly the reading is supported. corroborated: type: boolean description: Whether a second source corroborated the observed pattern. conflictingSources: type: boolean description: Whether contributing sources materially disagree. convertedFromCpm: type: boolean description: True when the value was converted from CPM using a generic fallback. sourceCount: type: integer format: int32 description: Number of distinct contributing sources. required: - id description: RadiationObservation represents a normalized ambient dose-rate reading. GeoCoordinates: type: object properties: latitude: type: number maximum: 90 minimum: -90 format: double description: Latitude in decimal degrees (-90 to 90). longitude: type: number maximum: 180 minimum: -180 format: double description: Longitude in decimal degrees (-180 to 180). description: GeoCoordinates represents a geographic location using WGS84 coordinates.