openapi: 3.1.0
info:
  title: Gainsight CS Timeline API
  description: >-
    The Timeline API enables creating, updating, reading, and deleting Timeline
    activities, supporting both single and bulk operations with up to 80MB
    payloads for bulk requests.
  version: '1.0'
  contact:
    name: Gainsight Support
    url: https://support.gainsight.com
    email: support@gainsight.com
  termsOfService: https://www.gainsight.com/terms-of-service/
externalDocs:
  description: Timeline API Documentation
  url: https://support.gainsight.com/gainsight_nxt/API_and_Developer_Docs/Timeline_API/Timeline_APIs
servers:
  - url: https://{domain}.gainsightcloud.com/v1
    description: Gainsight CS Production
    variables:
      domain:
        default: customer
        description: Customer-specific domain prefix
tags:
  - name: Activities
    description: Manage timeline activities
  - name: Activity Types
    description: Retrieve activity type configurations
security:
  - apiKey: []
paths:
  /timeline/activities:
    post:
      operationId: createActivity
      summary: Gainsight Create a timeline activity
      description: Create a new activity on the timeline for a company or relationship.
      tags:
        - Activities
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ActivityInput'
      responses:
        '200':
          description: Activity created successfully
          content:
            application/json:
              schema:
                type: object
                properties:
                  result:
                    type: boolean
                  data:
                    $ref: '#/components/schemas/Activity'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /timeline/activities/bulk:
    post:
      operationId: bulkCreateActivities
      summary: Gainsight Bulk create timeline activities
      description: >-
        Create multiple activities in a single request. Supports payloads up to
        80MB.
      tags:
        - Activities
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
                - records
              properties:
                records:
                  type: array
                  items:
                    $ref: '#/components/schemas/ActivityInput'
      responses:
        '200':
          description: Activities created
          content:
            application/json:
              schema:
                type: object
                properties:
                  result:
                    type: boolean
                  data:
                    type: object
                    properties:
                      insertedCount:
                        type: integer
                      failedCount:
                        type: integer
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /timeline/activities/{activityId}:
    get:
      operationId: getActivity
      summary: Gainsight Get a timeline activity
      description: Retrieve a specific timeline activity by ID.
      tags:
        - Activities
      parameters:
        - $ref: '#/components/parameters/activityId'
      responses:
        '200':
          description: Activity returned
          content:
            application/json:
              schema:
                type: object
                properties:
                  result:
                    type: boolean
                  data:
                    $ref: '#/components/schemas/Activity'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
    put:
      operationId: updateActivity
      summary: Gainsight Update a timeline activity
      description: Update an existing timeline activity.
      tags:
        - Activities
      parameters:
        - $ref: '#/components/parameters/activityId'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ActivityInput'
      responses:
        '200':
          description: Activity updated
          content:
            application/json:
              schema:
                type: object
                properties:
                  result:
                    type: boolean
                  data:
                    $ref: '#/components/schemas/Activity'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
    delete:
      operationId: deleteActivity
      summary: Gainsight Delete a timeline activity
      description: Delete a timeline activity by ID.
      tags:
        - Activities
      parameters:
        - $ref: '#/components/parameters/activityId'
      responses:
        '200':
          description: Activity deleted
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiResponse'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
  /timeline/activities/search:
    post:
      operationId: searchActivities
      summary: Gainsight Search timeline activities
      description: Search for timeline activities using filter criteria.
      tags:
        - Activities
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/SearchRequest'
      responses:
        '200':
          description: Activities returned
          content:
            application/json:
              schema:
                type: object
                properties:
                  result:
                    type: boolean
                  data:
                    type: object
                    properties:
                      records:
                        type: array
                        items:
                          $ref: '#/components/schemas/Activity'
                      totalCount:
                        type: integer
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /timeline/activityTypes:
    get:
      operationId: getActivityTypes
      summary: Gainsight Get activity types
      description: Retrieve the list of configured timeline activity types.
      tags:
        - Activity Types
      responses:
        '200':
          description: Activity types returned
          content:
            application/json:
              schema:
                type: object
                properties:
                  result:
                    type: boolean
                  data:
                    type: array
                    items:
                      $ref: '#/components/schemas/ActivityType'
        '401':
          $ref: '#/components/responses/Unauthorized'
components:
  securitySchemes:
    apiKey:
      type: apiKey
      name: accessKey
      in: header
      description: Gainsight CS REST API access key
  parameters:
    activityId:
      name: activityId
      in: path
      required: true
      description: Timeline activity unique identifier
      schema:
        type: string
  responses:
    Unauthorized:
      description: Authentication failed or access key is missing
    BadRequest:
      description: Invalid request body or parameters
    NotFound:
      description: The requested resource was not found
  schemas:
    ApiResponse:
      type: object
      properties:
        result:
          type: boolean
        errorCode:
          type: string
        errorDesc:
          type: string
        requestId:
          type: string
    SearchRequest:
      type: object
      properties:
        select:
          type: array
          items:
            type: string
        where:
          type: object
          properties:
            conditions:
              type: array
              items:
                type: object
                properties:
                  name:
                    type: string
                  value: {}
                  operator:
                    type: string
            expression:
              type: string
        limit:
          type: integer
        offset:
          type: integer
    Activity:
      type: object
      properties:
        Gsid:
          type: string
          description: Activity unique identifier
        Subject:
          type: string
          description: Activity subject line
        Notes:
          type: string
          description: Activity notes or body content
        ActivityTypeId:
          type: string
          description: Activity type identifier
        ActivityTypeName:
          type: string
          description: Activity type name
        CompanyId:
          type: string
          description: Associated company Gsid
        CompanyName:
          type: string
          description: Associated company name
        ActivityDate:
          type: string
          format: date-time
          description: Date and time of the activity
        OwnerId:
          type: string
          description: Activity owner user ID
        OwnerName:
          type: string
          description: Activity owner name
        ExternalId:
          type: string
          description: External system identifier
        Attendees:
          type: array
          items:
            type: object
            properties:
              personId:
                type: string
              email:
                type: string
                format: email
              name:
                type: string
          description: List of attendees
        Sentiment:
          type: string
          enum:
            - Positive
            - Neutral
            - Negative
          description: Sentiment of the activity
        CreatedDate:
          type: string
          format: date-time
          description: Record creation timestamp
        ModifiedDate:
          type: string
          format: date-time
          description: Last modification timestamp
    ActivityInput:
      type: object
      required:
        - Subject
        - ActivityTypeId
        - CompanyId
        - ActivityDate
      properties:
        Subject:
          type: string
          description: Activity subject
        Notes:
          type: string
          description: Activity notes
        ActivityTypeId:
          type: string
          description: Activity type identifier
        CompanyId:
          type: string
          description: Associated company Gsid
        ActivityDate:
          type: string
          format: date-time
          description: Date and time of the activity
        OwnerId:
          type: string
          description: Activity owner user ID
        ExternalId:
          type: string
          description: External system identifier
        Attendees:
          type: array
          items:
            type: object
            properties:
              personId:
                type: string
              email:
                type: string
                format: email
        Sentiment:
          type: string
          enum:
            - Positive
            - Neutral
            - Negative
    ActivityType:
      type: object
      properties:
        id:
          type: string
          description: Activity type identifier
        name:
          type: string
          description: Activity type name
        isSystem:
          type: boolean
          description: Whether this is a system-defined type
        isActive:
          type: boolean
          description: Whether the type is active