Sign out a device, the X3 App or a Claude connection

Area: Account and access · Updated: 1 Nov 2026 · Auf Deutsch · All articles

Symptoms

  • A phone or laptop is lost, sold or shared and still opens X3 without a password.
  • „Überall abmelden“ was the only way and also signed out the devices that should keep working.
  • An old Claude connection still answers with your X3 data.
  • The X3 App › Konto › App-Geräte (formerly „Angemeldete Geräte“) listed the devices, but signing one out was not possible.

Cause

  • Every browser, every device of the X3 App, every sign-in of the Sales Engine and every Claude connection is a sign-in of its own; it stays until it is ended or expires.
  • Before the update of 1 Nov 2026 X3 Konto only offered „Überall abmelden“, which ends every sign-in at once.

How to fix it

1. See where you are signed in

  • In the dashboard: X3 Konto › Sicherheit › Angemeldete Geräte und Verbindungen
  • With Claude (MCP): account_sessions_list
  • Since the update of 1 Nov 2026.

Browsers (Growth Intelligence and X3 Konto of one browser are one entry), the X3 App per device, the Sales Engine and Claude, with first and last activity. „dieses Gerät“ marks the device you are using. Sort, filter and choose columns in the table.

2. Sign one place out

  • In the dashboard: X3 Konto › Sicherheit › Angemeldete Geräte und Verbindungen › Abmelden
  • With Claude (MCP): account_sessions_revoke {"id":"3f1c2b9e-5a7d-4c11-9e2a-0b6d7c8e9f01"}

Ends exactly that entry: a browser with its X3 Konto sign-in, one device of the X3 App (its pushes stop as well), one Sales Engine sign-in or one Claude connection with all its tokens. A new sign-in is needed there afterwards. Through Claude, ask first; signing out the entry with current: true ends this very connection. A Claude connection that may only read ends only itself (see claude-sign-out-read-only).

3. Open the list from the X3 App

  • In the dashboard: X3 App › Konto › Alle Anmeldungen (Web)
  • With Claude (MCP): No MCP tool (the app opens X3 Konto › Sicherheit in the browser; the list there is the same as account_sessions_list)

4. End everything at once if the password may be known to others

  • In the dashboard: X3 Konto › Sicherheit › Angemeldete Geräte und Verbindungen › Überall abmelden
  • With Claude (MCP): No MCP tool (signing out everywhere needs the person's own confirmation in the browser; then change the password)

How to tell it worked

  • The entry is gone from the list, and the device, app or Claude connection asks for a new sign-in.
  • The other devices keep working.