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

# Get API version information

> Returns current version including major, minor, and revision numbers



## OpenAPI

````yaml /ste/api-reference/stl-api.yaml get /v1/version
openapi: 3.1.0
info:
  title: Symmetry Tax Logic API
  description: >-
    NOTE: All `/v1/*` endpoints require a Bearer token.


    **To authenticate:** call `GET /authentication/login` on the Symmetry API
    with your API key in the `api-key` header, then use the returned
    `accessToken` as the Bearer token below.
  contact:
    name: Symmetry Software
    url: https://www.symmetry.com/
    email: support@symmetry.com
  license:
    name: Terms of Use
    url: https://www.symmetry.com/terms
  version: 2026.7.1
servers:
  - url: https://api.symmetry.com/stl
security:
  - BearerAuth: []
tags:
  - name: Symmetry Tax Logic
    description: >-
      Generate AI-powered tax calculation explanations using the Symmetry Tax
      Engine
paths:
  /v1/version:
    get:
      tags:
        - Symmetry Tax Logic
      summary: Get API version information
      description: Returns current version including major, minor, and revision numbers
      operationId: get_version_v1_v1_version_get
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/VersionResponse'
components:
  schemas:
    VersionResponse:
      properties:
        service:
          type: string
          title: Service
        version:
          $ref: '#/components/schemas/VersionInfo'
        environment:
          type: string
          title: Environment
      type: object
      required:
        - service
        - version
        - environment
      title: VersionResponse
      description: Version endpoint response.
    VersionInfo:
      properties:
        major:
          type: string
          title: Major
          description: Major version number
        minor:
          type: string
          title: Minor
          description: Minor version number
        revision:
          type: string
          title: Revision
          description: Revision/patch number
        full:
          type: string
          title: Full
          description: Full version string
        api_version:
          type: string
          title: Api Version
          description: API version (v1, v2, etc.)
      type: object
      required:
        - major
        - minor
        - revision
        - full
        - api_version
      title: VersionInfo
      description: API version information.
  securitySchemes:
    BearerAuth:
      type: http
      scheme: bearer
      description: >-
        Obtain a token by calling GET /authentication/login with your Symmetry
        API key in the api-key header. Paste the accessToken value here.

````