> ## Documentation Index
> Fetch the complete documentation index at: https://docs.coval.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# List alert events

> Returns evaluation events for an alert, ordered by most recent first.

Every run completion that evaluates this alert produces an event,
regardless of outcome (TRIGGERED, NOT_MET, SUPPRESSED, ERROR).




## OpenAPI

````yaml /api-reference/v1/alerts-v1.yaml get /alerts/{alert_id}/events
openapi: 3.0.3
info:
  title: Coval Alerts API
  version: 1.0.0
  description: |
    API for managing alerts — metric-based alerting rules that evaluate
    on run completion and dispatch notifications to configured channels.

    Alerts support:
    - Per-run metric checks (single value, run average, run fraction)
    - AND/OR condition logic across multiple metrics
    - Multi-channel notifications (Slack, email, webhook, human review)
    - Cooldown/deduplication
    - Custom message templates
  contact:
    name: Coval API Support
    email: support@coval.dev
    url: https://docs.coval.ai
  license:
    name: Proprietary
    url: https://coval.dev/terms
servers:
  - url: https://api.coval.dev/v1
security:
  - ApiKeyAuth: []
tags:
  - name: Alerts
    description: CRUD operations for alert definitions
  - name: Alert Events
    description: Alert evaluation event history
paths:
  /alerts/{alert_id}/events:
    get:
      tags:
        - Alert Events
      summary: List alert events
      description: |
        Returns evaluation events for an alert, ordered by most recent first.

        Every run completion that evaluates this alert produces an event,
        regardless of outcome (TRIGGERED, NOT_MET, SUPPRESSED, ERROR).
      operationId: listAlertEvents
      parameters:
        - $ref: '#/components/parameters/AlertId'
        - name: outcome
          in: query
          schema:
            type: string
            enum:
              - TRIGGERED
              - NOT_MET
              - SUPPRESSED
              - ERROR
          description: Filter events by outcome
        - name: page_size
          in: query
          schema:
            type: integer
            minimum: 1
            maximum: 100
            default: 50
          description: Number of results per page
        - name: page_token
          in: query
          schema:
            type: string
          description: Token for fetching the next page of results
      responses:
        '200':
          description: List of alert events
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ListAlertEventsResponse'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '403':
          $ref: '#/components/responses/PermissionDenied'
        '404':
          $ref: '#/components/responses/NotFound'
        '500':
          $ref: '#/components/responses/InternalError'
components:
  parameters:
    AlertId:
      name: alert_id
      in: path
      required: true
      schema:
        type: string
        pattern: ^[0-9A-Z]{26}$
      description: Alert ULID
      example: 01HZ0EXAMPLE00000000000000
  schemas:
    ListAlertEventsResponse:
      type: object
      required:
        - events
        - total_count
      properties:
        events:
          type: array
          items:
            $ref: '#/components/schemas/AlertEventResource'
        next_page_token:
          type: string
          nullable: true
        total_count:
          type: integer
    AlertEventResource:
      type: object
      required:
        - ulid
        - alert_ulid
        - run_id
        - outcome
        - created_at
      properties:
        ulid:
          type: string
          pattern: ^[0-9A-Z]{26}$
          description: Event ULID
        alert_ulid:
          type: string
          description: Alert ULID that produced this event
        run_id:
          type: string
          description: Run that triggered evaluation
        outcome:
          $ref: '#/components/schemas/AlertEventOutcome'
        condition_results:
          type: array
          items:
            type: object
            properties:
              metric_id:
                type: string
              metric_display_name:
                type: string
              aggregation:
                type: string
              computed_value:
                oneOf:
                  - type: number
                  - type: string
                nullable: true
              threshold:
                oneOf:
                  - type: number
                  - type: string
                nullable: true
              operator:
                type: string
              met:
                type: boolean
          description: Per-condition evaluation results
        dispatched_channels:
          type: array
          items:
            type: object
            properties:
              channel_type:
                type: string
              channel_summary:
                type: string
              success:
                type: boolean
              error:
                type: string
                nullable: true
          description: Per-channel dispatch results
        message_sent:
          type: string
          nullable: true
          description: Notification message that was dispatched
        created_at:
          type: string
          format: date-time
          description: Event creation timestamp
    ErrorResponse:
      type: object
      required:
        - error
      properties:
        error:
          type: object
          required:
            - code
            - message
            - details
          properties:
            code:
              type: string
              enum:
                - INVALID_ARGUMENT
                - UNAUTHENTICATED
                - PERMISSION_DENIED
                - NOT_FOUND
                - ALREADY_EXISTS
                - INTERNAL
            message:
              type: string
              description: Human-readable error message
            details:
              type: array
              items:
                type: object
                properties:
                  field:
                    type: string
                    nullable: true
                  description:
                    type: string
    AlertEventOutcome:
      type: string
      enum:
        - TRIGGERED
        - NOT_MET
        - SUPPRESSED
        - ERROR
      description: Outcome of an alert evaluation
  responses:
    Unauthorized:
      description: Unauthorized
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
          example:
            error:
              code: UNAUTHENTICATED
              message: Authentication failed
              details:
                - field: X-API-Key
                  description: Invalid or missing API key
    PermissionDenied:
      description: Permission Denied
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
          example:
            error:
              code: PERMISSION_DENIED
              message: Insufficient permissions
              details:
                - field: permissions
                  description: 'Required scope: alerts:read'
    NotFound:
      description: Not Found
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
          example:
            error:
              code: NOT_FOUND
              message: Alert not found
              details:
                - field: alert_id
                  description: Alert '01HZ0EXAMPLE00000000000000' not found
    InternalError:
      description: Internal Server Error
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
          example:
            error:
              code: INTERNAL
              message: Internal server error
              details:
                - description: An unexpected error occurred
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: X-API-Key
      description: API key for authentication

````