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

# getCompanionPlatformId

> Function getCompanionPlatformId in the Baileys API.

> **getCompanionPlatformId**(`browser`): `string`

Defined in: [src/Utils/companion-reg-client-utils.ts:33](https://github.com/WhiskeySockets/Baileys/blob/master/src/Utils/companion-reg-client-utils.ts#L33)

## Parameters

### browser

[`WABrowserDescription`](/api-reference/type-aliases/WABrowserDescription)

## Returns

`string`