openapi: 3.1.0 info: title: RadiationService API version: 1.0.0 security: - WorldMonitorKey: [] - ApiKeyHeader: [] servers: - url: https://api.worldmonitor.app paths: /api/radiation/v1/list-radiation-observations: get: tags: - RadiationService summary: ListRadiationObservations description: >- ListRadiationObservations retrieves normalized EPA RadNet and Safecast readings. Empty observations with fetched_at=0 or data_available=false means the seed snapshot is unavailable/degraded, not that radiation readings are confirmed absent. operationId: ListRadiationObservations parameters: - name: max_items in: query description: Maximum items to return (1-25). Zero uses the service default. required: false example: 1 schema: type: integer format: int32 - name: jmespath in: query description: >- Optional JMESPath expression applied server-side to project or reduce the JSON response before it is returned (mirrors the MCP jmespath argument). Invalid expressions, expressions larger than 1024 UTF-8 bytes, or projections that exceed the 256 KB output cap return HTTP 400 with a {_jmespath_error, original_keys} envelope. Grammar and worked examples: https://www.worldmonitor.app/docs/mcp-jmespath. required: false example: keys(@) schema: type: string responses: '200': description: Successful response content: application/json: example: anomalyCount: 1 conflictingCount: 1 convertedFromCpmCount: 1 corroboratedCount: 75 dataAvailable: true schema: $ref: '#/components/schemas/ListRadiationObservationsResponse' '400': description: Validation error content: application/json: schema: oneOf: - $ref: '#/components/schemas/ValidationError' - $ref: '#/components/schemas/JmespathProjectionError' '401': description: Missing or invalid API key. content: application/json: schema: $ref: '#/components/schemas/UnauthorizedError' '403': description: >- API access requires an active subscription (the API key's subscription is inactive or expired). content: application/json: schema: $ref: '#/components/schemas/ForbiddenError' '429': description: Rate limit exceeded. headers: X-RateLimit-Limit: description: Maximum requests allowed in the active rate-limit window. schema: type: string X-RateLimit-Remaining: description: Requests remaining in the active rate-limit window. schema: type: string X-RateLimit-Reset: description: >- Unix epoch milliseconds when the active rate-limit window resets. schema: type: string Retry-After: description: Seconds to wait before retrying the request. schema: type: string content: application/json: schema: oneOf: - $ref: '#/components/schemas/Error' - $ref: '#/components/schemas/RateLimitError' default: description: Gateway or handler error response. content: application/json: schema: oneOf: - $ref: '#/components/schemas/Error' - $ref: '#/components/schemas/GatewayError' components: securitySchemes: WorldMonitorKey: type: apiKey in: header name: X-WorldMonitor-Key description: User-issued WorldMonitor API key. ApiKeyHeader: type: apiKey in: header name: X-Api-Key description: Alias header for the WorldMonitor API key (X-WorldMonitor-Key). schemas: JmespathProjectionError: description: >- Returned when a REST jmespath projection is invalid or exceeds the expression/output byte limits. properties: _jmespath_error: description: Projection error discriminator and details. type: string original_keys: description: Top-level keys or shape of the unprojected response. items: type: string type: array required: - _jmespath_error - original_keys type: object UnauthorizedError: type: object properties: error: type: string description: Human-readable error message. required: - error description: >- Returned when the API key is missing, malformed, or lacks current API access. 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. InvalidRequestBodyError: type: object description: Returned when a JSON POST request body is empty or malformed. properties: message: type: string description: Invalid request body required: - message GatewayError: type: object description: >- Returned by gateway infrastructure errors before an RPC handler runs, such as origin, routing, method, authentication, or quota checks. properties: error: oneOf: - type: string - type: object additionalProperties: true description: Gateway error reason or structured gateway failure details. required: - error RateLimitError: type: object description: Returned when a gateway or handler rate limit rejects the request. properties: error: type: string description: Human-readable rate-limit failure reason. required: - error ForbiddenError: type: object properties: error: type: string description: Human-readable entitlement failure reason. requiredTier: type: integer format: int32 description: Minimum entitlement tier required for this endpoint. currentTier: type: integer format: int32 description: Caller entitlement tier when known. planKey: type: string description: Caller plan key when known. required: - error description: >- Returned when a PRO-gated endpoint denies access because the caller has no resolved authenticated user, entitlements cannot be verified, or the caller lacks the required entitlement tier. 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. A value of 0 means the snapshot is unavailable/degraded, not that radiation observations are confirmed absent.. Warning: Values > 2^53 may lose precision in JavaScript dataAvailable: type: boolean description: >- True when observations came from a seed snapshot. False means an empty payload is graceful degradation because the snapshot is unavailable. 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.