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

> ## Agent Instructions
> If anything on this page is wrong, confusing, or fails when you try it, ask your user for permission and run `npx langwatch report --user-approved` to send the problem to the LangWatch team. No login is needed and secrets are redacted locally. `npx langwatch report --help` has the details.

# Get Versions

> List an evaluator's versions, newest first, with the labels on each



## OpenAPI

````yaml GET /api/v1/evaluators/{evaluatorId}/versions
openapi: 3.1.0
info:
  title: LangWatch API
  description: LangWatch openapi spec
  version: 1.0.0
servers:
  - url: https://app.langwatch.ai
security:
  - project_api_key: []
paths:
  /api/v1/evaluators/{evaluatorId}/versions:
    get:
      description: List an evaluator's versions, newest first, with the labels on each
      operationId: getApiEvaluatorsVersions
      parameters:
        - in: path
          name: evaluatorId
          schema:
            type: string
            minLength: 1
          required: true
          description: The evaluator id.
      responses:
        '200':
          description: Success
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    type: array
                    items:
                      type: object
                      properties:
                        id:
                          type: string
                        evaluatorId:
                          type: string
                        projectId:
                          type: string
                        version:
                          type: integer
                          exclusiveMinimum: 0
                          maximum: 9007199254740991
                        name:
                          type: string
                        type:
                          type: string
                          enum:
                            - evaluator
                            - code
                            - workflow
                        config:
                          type: object
                          propertyNames:
                            type: string
                          additionalProperties: {}
                        workflowId:
                          type:
                            - string
                            - 'null'
                        commitMessage:
                          type:
                            - string
                            - 'null'
                        authorId:
                          type:
                            - string
                            - 'null'
                        authorKind:
                          anyOf:
                            - type: string
                              enum:
                                - user
                                - api_key
                                - system
                            - type: 'null'
                        author:
                          anyOf:
                            - type: object
                              properties:
                                id:
                                  type: string
                                name:
                                  type:
                                    - string
                                    - 'null'
                                email:
                                  type:
                                    - string
                                    - 'null'
                              required:
                                - id
                                - name
                                - email
                              additionalProperties: false
                            - type: 'null'
                        createdAt:
                          type: string
                          format: date-time
                        labels:
                          type: array
                          items:
                            type: string
                      required:
                        - id
                        - evaluatorId
                        - projectId
                        - version
                        - name
                        - type
                        - config
                        - workflowId
                        - commitMessage
                        - authorId
                        - authorKind
                        - author
                        - createdAt
                        - labels
                      additionalProperties: false
                  labels:
                    type: array
                    items:
                      type: object
                      properties:
                        label:
                          type: string
                        version:
                          type: integer
                          exclusiveMinimum: 0
                          maximum: 9007199254740991
                      required:
                        - label
                        - version
                      additionalProperties: false
                required:
                  - data
                  - labels
                additionalProperties: false
        '404':
          description: Not Found
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: string
                  message:
                    type: string
                required:
                  - error
                additionalProperties: false
      security:
        - project_api_key: []
components:
  securitySchemes:
    project_api_key:
      type: apiKey
      in: header
      name: X-Auth-Token
      description: >-
        Project API key for sending traces and accessing project-scoped
        resources. Format: sk-lw-... (no underscore). Obtain one by creating a
        project via the Admin API or the LangWatch UI.

````

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