> ## Documentation Index > Fetch the complete documentation index at: https://docs.lerian.studio/llms.txt > Use this file to discover all available pages before exploring further. # Acknowledge or reopen an alert-id > Appends an acknowledge/reopen event for an opaque alert-id and returns the resulting current state. The operator identity recorded on the event is derived from the bearer token's claims (sub/owner) — a body that carries a sub or operator field is refused with 422. Operator A cannot acknowledge as operator B. ## OpenAPI ````yaml /en/openapi/v3-current/cabine.yaml post /v1/acks openapi: 3.1.0 info: description: >- The Cabine API serves Lerian Cabine, the operators' console over Lerian's native rails. Use it to acknowledge alerts, hand off shifts, delete operator users with four-eyes approval, and decide Lerian SPI operations under manual review with four-eyes approval. title: Lerian Cabine API version: 1.0.0 servers: - url: https://api.example.com description: >- Replace the example host with the URL provided during environment onboarding. security: [] paths: /v1/acks: post: tags: - OperatorState summary: Acknowledge or reopen an alert-id description: >- Appends an acknowledge/reopen event for an opaque alert-id and returns the resulting current state. The operator identity recorded on the event is derived from the bearer token's claims (sub/owner) — a body that carries a sub or operator field is refused with 422. Operator A cannot acknowledge as operator B. operationId: createAck parameters: - description: >- Bearer JWT token. The operator identity recorded on the event is derived from THIS token, never the body. in: header name: Authorization schema: description: >- Bearer JWT token. The operator identity recorded on the event is derived from THIS token, never the body. type: string requestBody: content: application/json: schema: $ref: '#/components/schemas/CreateAckBody' description: Acknowledge or reopen an opaque alert-id. required: true responses: '201': content: application/json: schema: $ref: '#/components/schemas/AckStateBody' description: Created '422': content: application/problem+json: schema: $ref: '#/components/schemas/Detail' description: Unprocessable Entity '500': content: application/problem+json: schema: $ref: '#/components/schemas/Detail' description: Internal Server Error default: content: application/problem+json: schema: $ref: '#/components/schemas/Detail' description: Error security: - BearerAuth: [] components: schemas: CreateAckBody: additionalProperties: false properties: action: description: >- 'acknowledge' marks the alert handled; 'reopen' flips it back to open. enum: - acknowledge - reopen examples: - acknowledge type: string alertId: description: Opaque client alert identity (kind:subject). examples: - projected-floor-breach type: string note: description: Optional operator handoff note (≤500 chars). type: string required: - alertId - action type: object AckStateBody: additionalProperties: false properties: alertId: description: Opaque client alert identity (kind:subject). examples: - projected-floor-breach type: string at: description: When the latest event was recorded (RFC 3339). format: date-time type: string note: description: Optional operator-authored handoff note. examples: - called BACEN, awaiting callback type: string operator: $ref: '#/components/schemas/AckOperatorBody' description: Server-extracted operator who recorded the latest event. state: description: '''acknowledged'' or ''open'' (open = latest event was a reopen).' examples: - acknowledged type: string required: - alertId - state - operator - at type: object Detail: additionalProperties: false properties: code: description: >- Stable, machine-readable domain error code scoped to the emitting service (format: -NNNN). type: string correlationId: description: Request-scoped correlation identifier echoing X-Request-ID. examples: - req-7a3f9c2e type: string detail: description: >- A human-readable explanation specific to this occurrence of the problem. examples: - Property foo is required but is missing. type: string errors: description: Optional list of individual error details items: $ref: '#/components/schemas/ErrorDetail' type: - array - 'null' instance: description: >- A URI reference that identifies the specific occurrence of the problem. examples: - https://example.com/error-log/abc123 format: uri type: string status: description: HTTP status code examples: - 400 format: int64 type: integer title: description: >- A short, human-readable summary of the problem type. This value should not change between occurrences of the error. examples: - Bad Request type: string type: default: about:blank description: A URI reference to human-readable documentation for the error. examples: - https://example.com/errors/example format: uri type: string upstream: $ref: '#/components/schemas/Upstream' description: >- RFC 9457 extension member: the error a proxied third-party provider reported. Absent unless the emitting service explicitly surfaced one. required: - correlationId type: object AckOperatorBody: additionalProperties: false properties: owner: description: Operator org (the token's 'owner' claim), when present. examples: - acme type: string sub: description: Operator subject (the token's 'sub' claim, server-extracted). examples: - alice type: string required: - sub type: object ErrorDetail: additionalProperties: false properties: location: description: >- Where the error occurred, e.g. 'body.items[3].tags' or 'path.thing-id' type: string message: description: Error message text type: string value: description: The value at the given location type: object Upstream: additionalProperties: false properties: code: description: The upstream provider's own error code, verbatim. examples: - E4001 type: string message: description: >- The upstream provider's own error message, verbatim (bounded, never its raw response body). examples: - account not found at provider type: string type: object securitySchemes: BearerAuth: bearerFormat: JWT description: JWT bearer token issued by the identity provider. scheme: bearer type: http ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.