Multi Session

The multi-session plugin allows users to maintain multiple active sessions across different accounts in the same browser. This plugin is useful for applications that require users to switch between multiple accounts without logging out.

Installation

import { betterAuth } from "better-auth"
import { multiSession } from "better-auth/plugins"
 
export const auth = betterAuth({
    plugins: [ 
        multiSession(), 
    ] 
})

import { createAuthClient } from "better-auth/client"
import { multiSessionClient } from "better-auth/client/plugins"
 
const authClient =  createAuthClient({
    plugins: [
        multiSessionClient()
    ]
})

Usage

Whenever a user logs in, the plugin will add additional cookie to the browser. This cookie will be used to maintain multiple sessions across different accounts.

List all device sessions

To list all active sessions for the current user, you can call the listDeviceSessions method.

await authClient.multiSession.listDeviceSessions()

on the server you can call listDeviceSessions method.

await auth.api.listDeviceSessions()

Set active session

To set the active session, you can call the setActive method.

await authClient.multiSession.setActive({
    sessionToken: "session-token"
})

Revoke a session

To revoke a session, you can call the revoke method.

await authClient.multiSession.revoke({
    sessionToken: "session-token"
})

Revoke all sessions

To revoke all sessions, you can call the revokeAll method.

await authClient.multiSession.revokeAll();

Signout Behaviour

When a user logs out, the plugin will revoke all active sessions for the user.

Max Sessions

You can specify the maximum number of sessions a user can have by passing the maximumSessions option to the plugin. By default, the plugin allows 5 sessions per device.

import { betterAuth } from "better-auth"
 
export const auth = betterAuth({
    plugins: [
        multiSession({
            maximumSessions: 3
        })
    ]
})