> ## Documentation Index > Fetch the complete documentation index at: https://docs.flashduty.com/llms.txt > Use this file to discover all available pages before exploring further. # List calendars > Return the list of service calendars visible to the current account. ## Restrictions | Aspect | Value | | ----------- | ------------------------------------------------------------- | | Rate limits | **1,000 requests/minute**; **50 requests/second** per account | | Permissions | None — any valid `app_key` can call this operation | ## OpenAPI ````yaml /api-reference/on-call.openapi.en.json post /calendar/list openapi: 3.1.0 info: title: Flashduty Open API description: >- Public HTTP API for the Flashduty incident management platform — incidents, notification templates, channels, schedules, monitors, RUM, and platform administration. Every operation is authenticated with an `app_key` query parameter issued from the Flashduty console under Account → APP Keys. Responses follow a uniform envelope: `{ request_id, data }` on success, `{ request_id, error }` on failure. version: 1.0.0 servers: - url: https://api.flashcat.cloud description: Flashduty Open API security: - AppKeyAuth: [] tags: - name: On-call/Incidents description: '' - name: On-call/Channels description: '' - name: On-call/Alerts description: >- Search, inspect, and act on alerts. Manage card views and alert processing pipelines. - name: On-call/Integrations description: '' - name: On-call/IM integrations description: IM integration queries, such as which integrations have war room enabled. - name: On-call/Schedules description: '' - name: On-call/Calendars description: '' - name: On-call/Notification templates description: '' - name: On-call/Alert enrichment description: Custom fields, enrichment rules, and data mapping (schema, data, API). - name: On-call/Analytics description: '' - name: On-call/Status pages description: '' - name: On-call/Changes description: '' paths: /calendar/list: post: tags: - On-call/Calendars summary: List calendars description: Return the list of service calendars visible to the current account. operationId: calendarList requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/CalendarListRequest' example: kind: personal responses: '200': description: Success content: application/json: schema: allOf: - $ref: '#/components/schemas/SuccessEnvelope' - type: object properties: data: $ref: '#/components/schemas/CalendarListResponse' example: request_id: 01HK8XQE3Z7JM2NTFQ5YJ8P9R4 data: items: - account_id: 2451002751131 team_id: 2477033058131 cal_id: cal.eh9gvPtWeH3xXgKeVSRxRg cal_name: Stock Exchange Calendar description: A stock market trading calendar example timezone: Asia/Shanghai kind: personal workdays: - 0 - 1 - 2 - 3 - 4 - 5 - 6 created_at: 1702455630 updated_at: 1775529526 creator_id: 2476444212131 updated_by: 3790925372131 status: enabled - account_id: 2451002751131 team_id: 0 cal_id: cal.VZYkchxJhGELSF4jzkUAud cal_name: HK Stock Exchange Calendar description: Hong Kong Stock Exchange trading days calendar timezone: Asia/Shanghai kind: personal extra_cal_ids: - zh-cn.china.official created_at: 1702968470 updated_at: 1775188967 creator_id: 2451002751131 updated_by: 3790925372131 status: enabled total: 8 '400': $ref: '#/components/responses/BadRequest' '401': $ref: '#/components/responses/Unauthorized' '429': $ref: '#/components/responses/TooManyRequests' '500': $ref: '#/components/responses/ServerError' components: schemas: CalendarListRequest: type: object description: >- Calendar list request. kind filters by calendar kind; no_locale disables locale filtering for public holiday calendars. properties: kind: type: string description: Calendar kind filter. Defaults to personal when empty. enum: - region.official.holiday - personal no_locale: type: boolean description: Disable locale filtering when listing public-holiday calendars. SuccessEnvelope: type: object description: >- Success response envelope. On every 2xx response, `request_id` identifies the call (also mirrored in the `Flashcat-Request-Id` header) and `data` holds the endpoint-specific payload. Failure responses use a different shape — see `ErrorResponse`. properties: request_id: type: string description: >- Unique ID for this request. Mirrored in the Flashcat-Request-Id response header. Include it when reporting issues. example: 01HK8XQE3Z7JM2NTFQ5YJ8P9R4 data: description: Endpoint-specific payload. See each operation's 200 response schema. required: - request_id - data CalendarListResponse: type: object description: Calendar list response. required: - items - total properties: items: type: array items: $ref: '#/components/schemas/CalendarItem' description: Calendar items. total: type: integer description: Total number of calendars returned. CalendarItem: type: object description: Service calendar detail. required: - account_id - team_id - cal_id - cal_name - description - timezone - kind - created_at - updated_at - creator_id - updated_by - status properties: account_id: type: integer format: uint64 description: Account ID. team_id: type: integer format: uint64 description: Owning team ID (0 when not assigned). cal_id: type: string description: Calendar ID. cal_name: type: string description: Calendar display name. description: type: string description: Calendar description. timezone: type: string description: IANA timezone. kind: type: string description: Calendar kind. enum: - region.official.holiday - religion.holiday - personal workdays: type: array items: type: integer minimum: 0 maximum: 6 description: Workday numbers (0 = Sunday, 6 = Saturday). extra_cal_ids: type: array items: type: string description: Inherited public-holiday calendar IDs. created_at: type: integer format: int64 description: Creation timestamp (Unix seconds). updated_at: type: integer format: int64 description: Last update timestamp (Unix seconds). creator_id: type: integer format: uint64 description: Creator person ID. updated_by: type: integer format: uint64 description: Last updater person ID. status: type: string description: Calendar status. enum: - enabled - deleted ErrorResponse: type: object description: Response envelope for errors. `error` is required; `data` is absent. properties: request_id: type: string example: 01HK8XQE3Z7JM2NTFQ5YJ8P9R4 error: $ref: '#/components/schemas/DutyError' required: - request_id - error DutyError: type: object description: >- Error payload inside the response envelope. Present only on non-2xx responses. properties: code: $ref: '#/components/schemas/ErrorCode' message: type: string description: >- Human-readable error message, localized by the caller's Accept-Language. May contain field names, IDs, or other context from the failing request. example: The specified parameter template_id is not valid. required: - code - message ErrorCode: type: string description: >- Flashduty error code enum. Every failed API response sets `error.code` to one of these stable wire strings. HTTP status is informational — the authoritative signal is the enum value. | Code | HTTP | Meaning | |---|---|---| | `OK` | 200 | Reserved — not returned on real errors. | | `InvalidParameter` | 400 | A required parameter is missing or failed validation. | | `BadRequest` | 400 | Generic 400 used when no more specific code fits. | | `InvalidContentType` | 400 | The `Content-Type` header is not `application/json`. | | `ResourceNotFound` | 400 | The referenced resource does not exist. Note: returned as HTTP 400, not 404 (historical choice). | | `NoLicense` | 400 | The feature is license-gated and no active license was found. | | `ReferenceExist` | 400 | Deletion blocked — other entities still reference this resource. | | `Unauthorized` | 401 | `app_key` is missing, invalid, or expired. | | `BalanceNotEnough` | 402 | Billing-gated operation with insufficient account balance. | | `AccessDenied` | 403 | Authenticated but lacking the permission required for this operation. | | `RouteNotFound` | 404 | The request URL path is not a known route. | | `MethodNotAllowed` | 405 | The HTTP method is not allowed on this otherwise-known path. | | `UndonedOrderExist` | 409 | An outstanding billing order blocks this new one. Wait and retry. | | `RequestLocked` | 423 | Operation temporarily locked due to repeated failures. | | `EntityTooLarge` | 413 | Request body exceeds the configured max size. | | `RequestTooFrequently` | 429 | Rate limit hit — API-global, per-account, or per-integration. | | `RequestVerifyRequired` | 428 | Second-factor verification required but not supplied. | | `DangerousOperation` | 428 | High-risk operation requires MFA verification. | | `InternalError` | 500 | Unhandled server-side error. Include `request_id` in the bug report. | | `ServiceUnavailable` | 503 | A backend dependency is unavailable. Try again later. | enum: - OK - InvalidParameter - BadRequest - InvalidContentType - ResourceNotFound - NoLicense - ReferenceExist - Unauthorized - BalanceNotEnough - AccessDenied - RouteNotFound - MethodNotAllowed - UndonedOrderExist - RequestLocked - EntityTooLarge - RequestTooFrequently - RequestVerifyRequired - DangerousOperation - InternalError - ServiceUnavailable x-enumDescriptions: OK: Reserved — not returned on real errors. InvalidParameter: A required parameter is missing or failed validation. BadRequest: Generic 400 used when no more specific code fits. InvalidContentType: The `Content-Type` header is not `application/json`. ResourceNotFound: >- The referenced resource does not exist. Note: returned as HTTP 400, not 404 (historical choice). NoLicense: The feature is license-gated and no active license was found. ReferenceExist: Deletion blocked — other entities still reference this resource. Unauthorized: '`app_key` is missing, invalid, or expired.' BalanceNotEnough: Billing-gated operation with insufficient account balance. AccessDenied: Authenticated but lacking the permission required for this operation. RouteNotFound: The request URL path is not a known route. MethodNotAllowed: The HTTP method is not allowed on this otherwise-known path. UndonedOrderExist: An outstanding billing order blocks this new one. Wait and retry. RequestLocked: Operation temporarily locked due to repeated failures. EntityTooLarge: Request body exceeds the configured max size. RequestTooFrequently: Rate limit hit — API-global, per-account, or per-integration. RequestVerifyRequired: Second-factor verification required but not supplied. DangerousOperation: High-risk operation requires MFA verification. InternalError: Unhandled server-side error. Include `request_id` in the bug report. ServiceUnavailable: A backend dependency is unavailable. Try again later. example: InvalidParameter responses: BadRequest: description: Invalid request — usually a missing or malformed parameter. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' examples: missingParameter: value: request_id: 01HK8XQE3Z7JM2NTFQ5YJ8P9R4 error: code: InvalidParameter message: The specified parameter is not valid. Unauthorized: description: Missing or invalid app_key. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' examples: missingAppKey: value: request_id: 01HK8XQE3Z7JM2NTFQ5YJ8P9R4 error: code: Unauthorized message: You are unauthorized. TooManyRequests: description: >- Rate limit hit. Either the global API limit, a per-account limit, or a per-integration limit. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' examples: rateLimited: value: request_id: 01HK8XQE3Z7JM2NTFQ5YJ8P9R4 error: code: RequestTooFrequently message: Request too frequently. ServerError: description: Unexpected server-side error. Include the request_id when reporting. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' examples: internal: value: request_id: 01HK8XQE3Z7JM2NTFQ5YJ8P9R4 error: code: InternalError message: >- We encountered an internal error, and it has been reported. Please try again later. securitySchemes: AppKeyAuth: type: apiKey in: query name: app_key description: >- App key issued from the Flashduty console under Account → APP Keys. Required on every public API call. Keep it secret — it grants the same access as the owning account. ````