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

# List Artifact Versions Metadata



## OpenAPI

````yaml /api-reference/openapi.json get /apps/{app_name}/users/{user_id}/sessions/{session_id}/artifacts/{artifact_name}/versions/metadata
openapi: 3.1.0
info:
  title: apowerb API
  description: REST API of the apowerb agentic framework (open-source edition).
  version: 0.1.2
  license:
    name: MIT
    url: https://github.com/apowerb/apowerb/blob/main/LICENSE
servers:
  - url: https://api.example.com
    description: Your apowerb instance
  - url: http://localhost:8000
    description: Local stack
security: []
paths:
  /apps/{app_name}/users/{user_id}/sessions/{session_id}/artifacts/{artifact_name}/versions/metadata:
    get:
      summary: List Artifact Versions Metadata
      operationId: >-
        list_artifact_versions_metadata_apps__app_name__users__user_id__sessions__session_id__artifacts__artifact_name__versions_metadata_get
      parameters:
        - name: app_name
          in: path
          required: true
          schema:
            type: string
            title: App Name
        - name: user_id
          in: path
          required: true
          schema:
            type: string
            title: User Id
        - name: session_id
          in: path
          required: true
          schema:
            type: string
            title: Session Id
        - name: artifact_name
          in: path
          required: true
          schema:
            type: string
            title: Artifact Name
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/ArtifactVersion'
                title: >-
                  Response List Artifact Versions Metadata Apps  App Name 
                  Users  User Id  Sessions  Session Id  Artifacts  Artifact
                  Name  Versions Metadata Get
        '422':
          description: Validation Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
components:
  schemas:
    ArtifactVersion:
      properties:
        version:
          type: integer
          title: Version
          description: Monotonically increasing identifier for the artifact version.
        canonicalUri:
          type: string
          title: Canonicaluri
          description: Canonical URI referencing the persisted artifact payload.
        customMetadata:
          additionalProperties: true
          type: object
          title: Custommetadata
          description: Optional user-supplied metadata stored with the artifact.
        createTime:
          type: number
          title: Createtime
          description: Unix timestamp (seconds) when the version record was created.
        mimeType:
          anyOf:
            - type: string
            - type: 'null'
          title: Mimetype
          description: MIME type when the artifact payload is stored as binary data.
      type: object
      required:
        - version
        - canonicalUri
      title: ArtifactVersion
      description: Metadata describing a specific version of an artifact.
    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

````

## Related topics

- [Get Artifact Version Metadata](/api-reference/get-artifact-version-metadata.md)
- [List Artifact Versions](/api-reference/list-artifact-versions.md)
- [Load Artifact Version](/api-reference/load-artifact-version.md)
- [Save Artifact](/api-reference/save-artifact.md)
- [Artifacts](/guides/artifacts.md)