# Get a list of browser kernel versions

Return the published browser kernel and UA major versions.
The request body is optional and every field is optional. Defaults are Windows (`1`), 64-bit
(`1`), and x86 (`0`). Only published kernels are returned.

Endpoint: POST /env/advanced/ua/versions
Version: 1.0.0
Security: OpenApiBearer

## Request fields (application/json):

  - `systemType` (integer)
    Operating system:
- `1` — Windows
- `2` — macOS
- `3` — Android
- `4` — iOS
- `5` — Linux
    Enum: 1, 2, 3, 4, 5

  - `systemBitType` (integer)
    System bitness. Defaults to `1`:
- `0` — 32-bit
- `1` — 64-bit
    Enum: 0, 1

  - `architecture` (integer)
    CPU architecture. Defaults to `0`:
- `0` — x86
- `1` — ARM
    Enum: 0, 1

## Response 200 fields (application/json):

  - `code` (integer, required)
    Return result code. `0` means success; other codes indicate exceptions.
    Example: 0

  - `msg` (string | null, required)
    Error message. Usually `null` on success.
    Example: null

  - `requestId` (string)
    Operation request ID. This field may be present when the request passes through the API gateway.
    Example: 1d4f3ea968664593860b94b35d4ebf5e

  - `data` (array, required)

  - `data.browserType` (integer)
    Browser type:
- `1` — Chrome
- `2` — Firefox
    Enum: 1, 2

  - `data.versions` (array)
    Published UA and kernel major versions for this browser type.
    Example: [124,123]