openapi: 3.1.0
info:
  title: CAST AI Kubernetes Cost Optimization AI Enabler Node Templates 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 Templates
  description: Manage node templates that define instance types, constraints, and configuration for autoscaled nodes.
paths:
  /kubernetes/clusters/{clusterId}/node-templates:
    get:
      operationId: NodeTemplatesAPI_ListNodeTemplates
      summary: CAST AI List node templates
      description: Lists node templates for the specified cluster.
      tags:
      - Node Templates
      parameters:
      - $ref: '#/components/parameters/ClusterId'
      responses:
        '200':
          description: Successful response with list of node templates.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ListNodeTemplatesResponse'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
    post:
      operationId: NodeTemplatesAPI_CreateNodeTemplate
      summary: CAST AI Create node template
      description: Creates a new node template for the specified cluster.
      tags:
      - Node Templates
      parameters:
      - $ref: '#/components/parameters/ClusterId'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/NodeTemplate'
      responses:
        '200':
          description: Node template created successfully.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/NodeTemplate'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
  /kubernetes/clusters/{clusterId}/node-templates/{nodeTemplateId}:
    get:
      operationId: NodeTemplatesAPI_GetNodeTemplate
      summary: CAST AI Get node template
      description: Gets a specific node template by ID.
      tags:
      - Node Templates
      parameters:
      - $ref: '#/components/parameters/ClusterId'
      - $ref: '#/components/parameters/NodeTemplateId'
      responses:
        '200':
          description: Successful response with node template.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/NodeTemplate'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
    put:
      operationId: NodeTemplatesAPI_UpdateNodeTemplate
      summary: CAST AI Update node template
      description: Updates an existing node template.
      tags:
      - Node Templates
      parameters:
      - $ref: '#/components/parameters/ClusterId'
      - $ref: '#/components/parameters/NodeTemplateId'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/NodeTemplate'
      responses:
        '200':
          description: Node template updated successfully.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/NodeTemplate'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
    delete:
      operationId: NodeTemplatesAPI_DeleteNodeTemplate
      summary: CAST AI Delete node template
      description: Deletes the specified node template.
      tags:
      - Node Templates
      parameters:
      - $ref: '#/components/parameters/ClusterId'
      - $ref: '#/components/parameters/NodeTemplateId'
      responses:
        '200':
          description: Node template deleted successfully.
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
components:
  parameters:
    NodeTemplateId:
      name: nodeTemplateId
      in: path
      required: true
      description: The unique identifier of the node template.
      schema:
        type: string
        format: uuid
    ClusterId:
      name: clusterId
      in: path
      required: true
      description: The unique identifier of the cluster.
      schema:
        type: string
        format: uuid
  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:
    NodeTemplate:
      type: object
      properties:
        id:
          type: string
          format: uuid
        name:
          type: string
        configurationId:
          type: string
          format: uuid
        constraints:
          type: object
          properties:
            minCpu:
              type: integer
            maxCpu:
              type: integer
            minMemory:
              type: integer
            maxMemory:
              type: integer
            useSpotInstances:
              type: boolean
            architectures:
              type: array
              items:
                type: string
        createdAt:
          type: string
          format: date-time
        updatedAt:
          type: string
          format: date-time
    ListNodeTemplatesResponse:
      type: object
      properties:
        items:
          type: array
          items:
            $ref: '#/components/schemas/NodeTemplate'
    Error:
      type: object
      properties:
        message:
          type: string
          description: Human-readable error message.
        code:
          type: integer
          description: Error code.
  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