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

# List machine classes

> ListMachineClasses returns the machine classes (sizes/SKUs) the caller's fleet offers, each with its resource shape (cpu / memory / disk) so a client can present a size picker and validate `machine_class`.



## OpenAPI

````yaml /api-reference/compute-public.v1.openapi.json get /compute/v1/catalog/machineclasses
openapi: 3.0.3
info:
  title: Mount Thor Compute — friendly public compute API
  description: >-
    ComputeService is the friendly public compute API: lifecycle (create / get /
    list / delete / power) for VirtualMachines and BareMetalMachines expressed
    in high-level terms, plus the catalog/discovery surface that supplies the
    valid images and machine classes a caller may pick from. There is
    deliberately no Update RPC: the CR spec is whole-spec CEL-immutable, so an
    "edit" is delete + recreate.
  version: 0.1.0
servers: []
security: []
tags:
  - name: ComputeService
paths:
  /compute/v1/catalog/machineclasses:
    get:
      tags:
        - ComputeService
      summary: List machine classes
      description: >-
        ListMachineClasses returns the machine classes (sizes/SKUs) the caller's
        fleet offers, each with its resource shape (cpu / memory / disk) so a
        client can present a size picker and validate `machine_class`.
      operationId: ComputeService_ListMachineClasses
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ListMachineClassesResponse'
components:
  schemas:
    ListMachineClassesResponse:
      type: object
      properties:
        machineClasses:
          type: array
          items:
            $ref: '#/components/schemas/MachineClass'
    MachineClass:
      type: object
      properties:
        name:
          type: string
          description: name is the SKU used as `machine_class` on create, e.g. "m4-24g".
        displayName:
          type: string
          description: >-
            display_name is a human label; defaults to name when the catalog has
            none.
        cpuCount:
          type: integer
          format: uint32
        memoryBytes:
          type: string
        diskBytes:
          type: string
      description: MachineClass is one catalog size/SKU, with its resource shape.

````