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

# List OS Versions

Retrieve OS versions available for targeting. Currently limited to Android and iOS versions. Each version includes its parent platform.


## OpenAPI

````yaml openapi/metadata.yaml get /meta/osversions
openapi: 3.0.3
info:
  title: Everflow API - Metadata
  description: >
    Lookup endpoints for targeting and reporting metadata. Use these endpoints
    to retrieve valid IDs and values for countries, regions, cities, browsers,
    platforms, device types, and other dimensions used across the Everflow API.


    These values are referenced by offer targeting, rulesets, reporting filters,
    and other API endpoints that accept dimension IDs.
  version: 1.0.0
servers:
  - url: https://api.eflow.team/v1
security: []
tags:
  - name: Geolocation
    description: Country, region, city, DMA, and timezone lookups.
  - name: Device & Browser
    description: >-
      Browser, platform, device type, brand, OS version, and connection type
      lookups.
  - name: Other
    description: Currency, mobile carrier, and browser language lookups.
paths:
  /meta/osversions:
    get:
      tags:
        - Device & Browser
      summary: List OS Versions
      responses:
        '200':
          description: ''
          content:
            application/json:
              schema:
                type: object
                properties:
                  os_versions:
                    type: array
                    items:
                      type: object
                      properties:
                        os_version_id:
                          type: integer
                          description: Unique OS version identifier.
                        name:
                          type: string
                          description: Version string (e.g. "14.0", "12.0").
                        platform_id:
                          type: integer
                          description: Parent platform ID.
                        platform_name:
                          type: string
                          description: Parent platform name (e.g. "Android", "iOS").
      security:
        - API Key: []
components:
  securitySchemes:
    API Key:
      description: The Everflow API key generated from the Control Center > Security.
      in: header
      name: X-Eflow-Api-Key
      type: apiKey

````