---
title: "Sign in"
description: "How an AI agent signs in and stays signed in: stored passwords, second factors, emailed codes, passkeys and sessions that survive the end of a run."
canonical: "https://scalebrowser.net/blog/category/sign-in"
---

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

# Sign in

> How an AI agent signs in and stays signed in: stored passwords, second factors, emailed codes, passkeys and sessions that survive the end of a run.

Reaching a login page is the short part; getting past it and still being signed in the next day is the work. The articles here take the walls one at a time and say what we tested against a real engine. In every one of them the password stays out of the model, and each article explains where it goes instead.

The [documentation](/docs) shows how a login is stored against a profile.