openapi: 3.1.0
info:
  title: CAST AI Kubernetes Cost Optimization AI Enabler Workload Optimization API
  description: CAST AI is a Kubernetes cost optimization platform that provides APIs for managing clusters, autoscaling, node configuration, workload optimization, cost reporting, security insights, and more. The platform continuously monitors clusters and optimizes them for cost efficiency using autoscaling, spot instance automation, bin packing, and other techniques.
  version: 1.0.0
  contact:
    name: CAST AI
    url: https://cast.ai
  termsOfService: https://cast.ai/terms-of-service
servers:
- url: https://api.cast.ai/v1
  description: CAST AI Production API
security:
- ApiKeyAuth: []
tags:
- name: Workload Optimization
  description: Manage workload optimization settings, view workload recommendations, and configure workload autoscaling.
paths:
  /workload-autoscaling/clusters/{clusterId}/workloads:
    get:
      operationId: WorkloadOptimizationAPI_ListWorkloads
      summary: CAST AI List workloads
      description: Returns a list of workloads for the given cluster.
      tags:
      - Workload Optimization
      parameters:
      - $ref: '#/components/parameters/ClusterId'
      responses:
        '200':
          description: Successful response with list of workloads.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ListWorkloadsResponse'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
  /workload-autoscaling/clusters/{clusterId}/workloads/{workloadId}:
    get:
      operationId: WorkloadOptimizationAPI_GetWorkload
      summary: CAST AI Get workload
      description: Returns workload details and optimization recommendations.
      tags:
      - Workload Optimization
      parameters:
      - $ref: '#/components/parameters/ClusterId'
      - name: workloadId
        in: path
        required: true
        schema:
          type: string
      responses:
        '200':
          description: Successful response with workload details.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Workload'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
  /workload-autoscaling/agent-statuses:
    get:
      operationId: WorkloadOptimizationAPI_GetOrganizationAgentStatuses
      summary: CAST AI Get agent statuses
      description: Returns status of workload-autoscaler agents for all clusters in an organization.
      tags:
      - Workload Optimization
      responses:
        '200':
          description: Successful response with agent statuses.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AgentStatusesResponse'
        '401':
          $ref: '#/components/responses/Unauthorized'
components:
  responses:
    Unauthorized:
      description: Authentication failed. Invalid or missing API key.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    NotFound:
      description: The requested resource was not found.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  schemas:
    ListWorkloadsResponse:
      type: object
      properties:
        items:
          type: array
          items:
            $ref: '#/components/schemas/Workload'
    AgentStatusesResponse:
      type: object
      properties:
        items:
          type: array
          items:
            type: object
            properties:
              clusterId:
                type: string
                format: uuid
              status:
                type: string
              lastSeenAt:
                type: string
                format: date-time
    Error:
      type: object
      properties:
        message:
          type: string
          description: Human-readable error message.
        code:
          type: integer
          description: Error code.
    Workload:
      type: object
      properties:
        id:
          type: string
          format: uuid
        clusterId:
          type: string
          format: uuid
        namespace:
          type: string
        name:
          type: string
        type:
          type: string
          enum:
          - Deployment
          - StatefulSet
          - DaemonSet
          - Job
          - CronJob
        containers:
          type: array
          items:
            type: object
            properties:
              name:
                type: string
              requests:
                type: object
                properties:
                  cpu:
                    type: string
                  memory:
                    type: string
              recommendations:
                type: object
                properties:
                  cpu:
                    type: string
                  memory:
                    type: string
  parameters:
    ClusterId:
      name: clusterId
      in: path
      required: true
      description: The unique identifier of the cluster.
      schema:
        type: string
        format: uuid
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: X-API-Key
      description: API key for authentication. Create access keys from the CAST AI console under API > API access keys.
externalDocs:
  description: CAST AI API Documentation
  url: https://docs.cast.ai/docs/api