# Tab member added

Webhook event: `tab.member_added`

Fired when a guest joins an existing tab (POST /api/v1/tabs/:id/members).

Delivered payload:

```ts
{
  id: string // uuid
  event: "tab.member_added"
  resource: "tab"
  resourceId: string
  timestamp: string // date-time
  apiVersion: "v1"
  data: {
    customFields?: Array<{
        fieldId: string
        key: string
        label: string
        group: string
        type: string
        value: unknown
        displayValue: string
        version: integer
        status: string
      }>
    metadata?: Record<string, unknown> | null
    tabId: string // uuid
    tabMemberId: string // uuid
    userId: integer
    isNewUser: boolean
    memberType: "GUEST" | "STAFF"
    locationId: integer
    addedAt: string // date-time
  }
}
```