openapi: 3.1.0
info:
  title: CAST AI Kubernetes Cost Optimization AI Enabler Node Configuration 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: Node Configuration
  description: Manage node configurations for clusters, which define how nodes are provisioned and configured.
paths:
  /kubernetes/clusters/{clusterId}/node-configurations:
    get:
      operationId: NodeConfigurationAPI_ListConfigurations
      summary: CAST AI List node configurations
      description: Lists node configurations for the specified cluster.
      tags:
      - Node Configuration
      parameters:
      - $ref: '#/components/parameters/ClusterId'
      responses:
        '200':
          description: Successful response with list of node configurations.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ListNodeConfigurationsResponse'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
    post:
      operationId: NodeConfigurationAPI_CreateConfiguration
      summary: CAST AI Create node configuration
      description: Creates a new node configuration for the specified cluster.
      tags:
      - Node Configuration
      parameters:
      - $ref: '#/components/parameters/ClusterId'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/NodeConfiguration'
      responses:
        '200':
          description: Node configuration created successfully.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/NodeConfiguration'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
  /kubernetes/clusters/{clusterId}/node-configurations/{configurationId}:
    delete:
      operationId: NodeConfigurationAPI_DeleteConfiguration
      summary: CAST AI Delete node configuration
      description: Deletes node configuration of a specific cluster.
      tags:
      - Node Configuration
      parameters:
      - $ref: '#/components/parameters/ClusterId'
      - name: configurationId
        in: path
        required: true
        schema:
          type: string
      responses:
        '200':
          description: Node configuration deleted successfully.
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
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'
  parameters:
    ClusterId:
      name: clusterId
      in: path
      required: true
      description: The unique identifier of the cluster.
      schema:
        type: string
        format: uuid
  schemas:
    ListNodeConfigurationsResponse:
      type: object
      properties:
        items:
          type: array
          items:
            $ref: '#/components/schemas/NodeConfiguration'
    Error:
      type: object
      properties:
        message:
          type: string
          description: Human-readable error message.
        code:
          type: integer
          description: Error code.
    NodeConfiguration:
      type: object
      properties:
        id:
          type: string
          format: uuid
        name:
          type: string
        diskCpuRatio:
          type: integer
        minDiskSize:
          type: integer
        subnets:
          type: array
          items:
            type: string
        tags:
          type: object
          additionalProperties:
            type: string
        createdAt:
          type: string
          format: date-time
  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