> ## Documentation Index > Fetch the complete documentation index at: https://www.worldmonitor.app/docs/llms.txt > Use this file to discover all available pages before exploring further. # RecordBaselineSnapshot > RecordBaselineSnapshot batch-updates baseline statistics using Welford's online algorithm. ## OpenAPI ````yaml /api/InfrastructureService.openapi.yaml post /api/infrastructure/v1/record-baseline-snapshot openapi: 3.1.0 info: title: InfrastructureService API version: 1.0.0 servers: - url: https://api.worldmonitor.app security: - WorldMonitorKey: [] - ApiKeyHeader: [] paths: /api/infrastructure/v1/record-baseline-snapshot: post: tags: - InfrastructureService summary: RecordBaselineSnapshot description: >- RecordBaselineSnapshot batch-updates baseline statistics using Welford's online algorithm. operationId: RecordBaselineSnapshot parameters: - name: Idempotency-Key in: header description: >- Optional client-generated idempotency key. Retrying a POST with the same key and an identical request body replays the original response (only the status, body, and Content-Type are reproduced) instead of re-executing; reusing the key with a different body is rejected with 422. For mutations this avoids duplicating the side effect, while for batch-read POSTs it replays a cached snapshot that can be up to 24 hours stale. Keys are scoped per authenticated caller (falling back to the source IP for unauthenticated endpoints) and retained for 24 hours. required: false example: 4f8b9c2e-1a3d-4b6f-8e0a-2c5d7f9b1e34 schema: type: string minLength: 1 maxLength: 255 pattern: ^[\x21-\x7E]{1,255}$ requestBody: content: application/json: example: updates: - count: 1 region: example type: military_flights schema: $ref: '#/components/schemas/RecordBaselineSnapshotRequest' required: true responses: '200': description: Successful response headers: Idempotency-Key: schema: type: string description: >- The idempotency key echoed from the request. Present only when the client opted into idempotency. Idempotent-Replayed: schema: type: boolean description: >- true when this response was replayed from an earlier request with the same key, false on the first (original) request. Present only when the client opted into idempotency. content: application/json: example: error: example updated: 1 schema: $ref: '#/components/schemas/RecordBaselineSnapshotResponse' '400': description: >- Validation error, invalid Idempotency-Key header, or malformed JSON request body content: application/json: schema: oneOf: - $ref: '#/components/schemas/ValidationError' - type: object required: - error - message properties: error: type: string message: type: string - $ref: '#/components/schemas/InvalidRequestBodyError' '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' '409': description: A request with this Idempotency-Key is still being processed headers: Idempotency-Key: schema: type: string description: The idempotency key supplied by the client. Retry-After: schema: type: string description: Seconds to wait before retrying the in-flight request. content: application/json: schema: type: object required: - error - message properties: error: type: string message: type: string '422': description: The Idempotency-Key was already used with a different request body headers: Idempotency-Key: schema: type: string description: The idempotency key supplied by the client. content: application/json: schema: type: object required: - error - message properties: error: type: string message: type: string '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: schemas: RecordBaselineSnapshotRequest: type: object properties: updates: type: array items: $ref: '#/components/schemas/BaselineUpdate' description: >- RecordBaselineSnapshotRequest batch-updates baselines using Welford's online algorithm. RecordBaselineSnapshotResponse: type: object properties: updated: type: integer format: int32 description: Number of baselines that were written. error: type: string description: Error message if the request was invalid. description: >- RecordBaselineSnapshotResponse reports how many baselines were successfully updated. 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. 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 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. 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. 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. 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 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 BaselineUpdate: type: object properties: type: type: string minLength: 1 description: Activity type key. region: type: string description: Geographic region key, defaults to "global". count: type: number format: double description: Observed count value. required: - type description: >- BaselineUpdate is a single metric observation to incorporate into the running baseline. 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. 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). ````