> ## Documentation Index
> Fetch the complete documentation index at: https://docs.base39.com.br/llms.txt
> Use this file to discover all available pages before exploring further.

# List events for a task



## OpenAPI

````yaml /api-reference/openapi.json get /v2/tasks/{id}/history
openapi: 3.1.0
info:
  title: Base39 API
  description: Base39 API
  version: 1.0.0
  contact:
    name: Base39 Team
    url: https://base39.com.br
    email: suporte@base39.com.br
  termsOfService: https://base39.com.br/termos
  license:
    name: Proprietary
    url: https://base39.com.br/termos
servers:
  - url: http://localhost:3000
    description: Local
  - url: https://api.dev.base39.cloud
    description: Development
  - url: https://api.base39.com.br
    description: Production
security:
  - OAuth2: []
tags:
  - name: pages
    description: Profiles and reports pages
  - name: pipelines
    description: Pipeline boards (kanban) of pages
  - name: blocks
    description: Blocks operations
  - name: search
    description: Search across content
  - name: targets
    description: Lookup targets via datasets
  - name: CognitoTriggers
    description: Cognito triggers
paths:
  /v2/tasks/{id}/history:
    get:
      tags:
        - tasks
      summary: List events for a task
      operationId: task_find_events_by_task_id
      parameters:
        - name: id
          required: true
          in: path
          schema:
            type: string
        - name: expand
          required: false
          in: query
          description: >-
            Comma-separated fields to expand. Supports selection with brackets
            (e.g., "createdBy,updatedBy" or "targets.company[icon,tradeName]").
          schema:
            example: createdBy
            type: string
        - name: page_size
          required: false
          in: query
          description: Number of items to return per page
          schema:
            minimum: 1
            maximum: 100
            default: 20
            example: 100
            type: number
        - name: start_cursor
          required: false
          in: query
          description: >-
            Opaque cursor for pagination. Use the next_cursor from previous
            response.
          schema:
            example: >-
              eyJjcmVhdGVkX3RpbWUiOiIyMDI0LTExLTE1VDEwOjAwOjAwLjAwMFoiLCJpZCI6InBhZ2VfYWJjMTIzIn0=
            type: string
      responses:
        '200':
          description: Paginated list of task events for a task
          content:
            application/json:
              schema:
                type: object
                properties:
                  object:
                    type: string
                    example: list
                  results:
                    type: array
                    items:
                      $ref: '#/components/schemas/TaskEventOutput'
                  next_cursor:
                    type: string
                    nullable: true
                  has_more:
                    type: boolean
                  type:
                    type: string
                required:
                  - object
                  - results
                  - has_more
components:
  schemas:
    TaskEventOutput:
      type: object
      properties:
        id:
          type: string
          example: tse_123
        taskId:
          type: string
          example: tsk_123
        actionType:
          type: string
          example: webhook
        eventType:
          type: string
          example: company_history.events.detected
        occurredAt:
          type: string
          example: '2026-04-09T15:00:00.000Z'
          format: date-time
        payload:
          oneOf:
            - $ref: '#/components/schemas/TaskEventLawsuitPayloadDto'
            - $ref: '#/components/schemas/TaskEventCompanyHistoryPayloadDto'
      required:
        - id
        - taskId
        - actionType
        - eventType
        - occurredAt
        - payload
    TaskEventLawsuitPayloadDto:
      type: object
      properties:
        company:
          $ref: '#/components/schemas/TaskEventCompanyPayloadOutput'
        lawsuit:
          $ref: '#/components/schemas/TaskEventLawsuitPayloadOutput'
      required:
        - company
        - lawsuit
    TaskEventCompanyHistoryPayloadDto:
      type: object
      properties:
        company:
          $ref: '#/components/schemas/TaskEventCompanyPayloadOutput'
        event:
          $ref: '#/components/schemas/CompanyHistoryEventOutput'
      required:
        - company
        - event
    TaskEventCompanyPayloadOutput:
      type: object
      properties:
        companyId:
          type: string
          example: cmp_123
        document:
          type: string
          example: '12345678000190'
        displayName:
          type: string
          example: Base39 Tecnologia Ltda
        legalName:
          type: object
          nullable: true
          example: Base39 Tecnologia Ltda
        tradeName:
          type: object
          nullable: true
          example: Base39
      required:
        - companyId
        - document
        - displayName
        - legalName
        - tradeName
    TaskEventLawsuitPayloadOutput:
      type: object
      properties:
        cnjNumber:
          type: string
          example: 0008649-70.2021.8.12.0110
        court:
          type: object
          nullable: true
          example: TJMS
        state:
          type: object
          nullable: true
          example: MS
        distributionDate:
          type: object
          nullable: true
          example: '2021-10-06'
      required:
        - cnjNumber
        - court
        - state
        - distributionDate
    CompanyHistoryEventOutput:
      type: object
      properties:
        hash:
          type: string
          example: 9c0f...
        date:
          type: string
          example: '2024-03-15'
        title:
          type: string
          example: Base39 levanta Series A de R$ 50M
        description:
          type: string
        category:
          type: string
          example: investment
        sentiment:
          type: string
          example: positive
        sources:
          type: array
          items:
            $ref: '#/components/schemas/CompanyHistorySourceOutput'
        images:
          type: array
          items:
            $ref: '#/components/schemas/CompanyHistoryImageOutput'
      required:
        - hash
        - date
        - title
        - description
        - category
        - sentiment
        - sources
        - images
    CompanyHistorySourceOutput:
      type: object
      properties:
        url:
          type: string
          example: https://example.com/article
        title:
          type: object
          nullable: true
        snippet:
          type: object
          nullable: true
        source_type:
          type: object
          nullable: true
      required:
        - url
        - title
        - snippet
        - source_type
    CompanyHistoryImageOutput:
      type: object
      properties:
        url:
          type: string
          example: https://example.com/image.jpg
        source_url:
          type: object
          nullable: true
        title:
          type: object
          nullable: true
      required:
        - url
        - source_url
        - title
  securitySchemes:
    OAuth2:
      type: oauth2
      flows:
        authorizationCode:
          authorizationUrl: https://id.local.base39.cloud/oauth2/authorize
          tokenUrl: https://id.local.base39.cloud/oauth2/token
          scopes:
            profile: Read user profile
            email: Read user email
            openid: OpenID authentication
      description: OAuth2 Authorization Code flow

````