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

# List the versions of a parameterized model

> List every version in a parameterized model's family, oldest first.

The family is the model's original and every version made from it or from one
of its versions, whichever member is asked about. Items are summaries without
parameter values, each with its ``parent_parameterized_model_id``; fetch one
with ``GET /parameterized_models/{id}`` for its parameters.



## OpenAPI

````yaml https://api.ionworks.com/openapi.json get /cells/{cell_spec_id}/parameterized_models/{parameterized_model_id}/versions
openapi: 3.1.0
info:
  title: FastAPI
  version: 0.1.0
servers:
  - url: https://api.ionworks.com
    description: Production
security: []
paths:
  /cells/{cell_spec_id}/parameterized_models/{parameterized_model_id}/versions:
    get:
      tags:
        - parameterized_models
      summary: List the versions of a parameterized model
      description: >-
        List every version in a parameterized model's family, oldest first.


        The family is the model's original and every version made from it or
        from one

        of its versions, whichever member is asked about. Items are summaries
        without

        parameter values, each with its ``parent_parameterized_model_id``; fetch
        one

        with ``GET /parameterized_models/{id}`` for its parameters.
      operationId: >-
        list_parameterized_model_versions_cells__cell_spec_id__parameterized_models__parameterized_model_id__versions_get
      parameters:
        - name: parameterized_model_id
          in: path
          required: true
          schema:
            type: string
            format: uuid
            title: Parameterized Model Id
        - name: limit
          in: query
          required: false
          schema:
            type: integer
            maximum: 1000
            minimum: 1
            default: 100
            title: Limit
        - name: offset
          in: query
          required: false
          schema:
            type: integer
            minimum: 0
            default: 0
            title: Offset
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema: {}
        '422':
          description: Validation Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
components:
  schemas:
    HTTPValidationError:
      properties:
        detail:
          items:
            $ref: '#/components/schemas/ValidationError'
          type: array
          title: Detail
      type: object
      title: HTTPValidationError
    ValidationError:
      properties:
        loc:
          items:
            anyOf:
              - type: string
              - type: integer
          type: array
          title: Location
        msg:
          type: string
          title: Message
        type:
          type: string
          title: Error Type
        input:
          title: Input
        ctx:
          type: object
          title: Context
      type: object
      required:
        - loc
        - msg
        - type
      title: ValidationError

````

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