---
title: "Get OS values"
type: reference
method: GET
path: /rest-api/targeting/operating-system/values.do
tag: "Targeting Rules"
---

# Get OS values

`GET https://YOUR-NETWORK-DOMAIN/rest-api/targeting/operating-system/values.do`

Returns the list of available operating system names that can be used for OS targeting rules. The response is a JSON array of OS name strings (e.g., WINDOWS, ANDROID, IOS). Requires MANAGE_DEMAND_TARGETING permission. Use the returned OS names as input to the OS versions endpoint to retrieve version-specific values.

## Responses

- `200` — Success
- `400` — Bad request — invalid or missing parameters
- `401` — Unauthorized
- `403` — Forbidden
- `500` — Internal server error

## Example request

```bash
curl --request GET \
  --url 'https://YOUR-NETWORK-DOMAIN/rest-api/targeting/operating-system/values.do' \
  --header 'X-Api-Key: YOUR_API_KEY'
```

Source: https://epom.com/ad-server/docs/api/targeting-rules/get-targeting-operating-system-values