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itemprop="itemListElement" itemtype="https://schema.org/ListItem" class="breadcrumbs__item breadcrumbs__item--active"><span class="breadcrumbs__link" itemprop="name">Authentication</span><meta itemprop="position" content="2"></li></ul></nav><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>Authentication</h1></header><style>[data-ch-theme="github-dark"] { --ch-t-colorScheme: dark;--ch-t-foreground: #c9d1d9;--ch-t-background: #0d1117;--ch-t-lighter-inlineBackground: #0d1117e6;--ch-t-editor-background: #0d1117;--ch-t-editor-foreground: #c9d1d9;--ch-t-editor-lineHighlightBackground: #6e76811a;--ch-t-editor-rangeHighlightBackground: #ffffff0b;--ch-t-editor-infoForeground: #3794FF;--ch-t-editor-selectionBackground: #264F78;--ch-t-focusBorder: #1f6feb;--ch-t-tab-activeBackground: #0d1117;--ch-t-tab-activeForeground: #c9d1d9;--ch-t-tab-inactiveBackground: #010409;--ch-t-tab-inactiveForeground: #8b949e;--ch-t-tab-border: #30363d;--ch-t-tab-activeBorder: #0d1117;--ch-t-editorGroup-border: #30363d;--ch-t-editorGroupHeader-tabsBackground: #010409;--ch-t-editorLineNumber-foreground: #6e7681;--ch-t-input-background: #0d1117;--ch-t-input-foreground: #c9d1d9;--ch-t-input-border: #30363d;--ch-t-icon-foreground: #8b949e;--ch-t-sideBar-background: #010409;--ch-t-sideBar-foreground: #c9d1d9;--ch-t-sideBar-border: #30363d;--ch-t-list-activeSelectionBackground: #6e768166;--ch-t-list-activeSelectionForeground: #c9d1d9;--ch-t-list-hoverBackground: #6e76811a;--ch-t-list-hoverForeground: #c9d1d9; }</style>
<h2 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="f480dac5d2094d75a433de0b8e195641">Sign Up and Sign In<a class="hash-link" aria-label="Direct link to Sign Up and Sign In" title="Direct link to Sign Up and Sign In" href="/configuration-authentication#f480dac5d2094d75a433de0b8e195641">​</a></h2>
<blockquote>
<p>⚠️ WARNING
This page may contain outdated information. It will be updated as soon as possible.</p>
</blockquote>
<p>The login functionality in Langflow serves to authenticate users and protect sensitive routes in the application. Starting from version 0.5, Langflow introduces an enhanced login mechanism that is governed by a few environment variables. This allows new secure features.</p>
<h2 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="3ed7cae6f5324ba0ac14783cf2a6cc07">Environment variables<a class="hash-link" aria-label="Direct link to Environment variables" title="Direct link to Environment variables" href="/configuration-authentication#3ed7cae6f5324ba0ac14783cf2a6cc07">​</a></h2>
<p>The following environment variables are crucial in configuring the login settings:</p>
<ul>
<li><span data-ch-theme="github-dark" class="ch-inline-code not-prose"><code><span style="color:#79C0FF">LANGFLOW_AUTO_LOGIN</span></code></span>: Determines whether Langflow should automatically log users in. Default is <code>True</code>.</li>
<li><span data-ch-theme="github-dark" class="ch-inline-code not-prose"><code><span style="color:#79C0FF">LANGFLOW_SUPERUSER</span></code></span>: The username of the superuser.</li>
<li><span data-ch-theme="github-dark" class="ch-inline-code not-prose"><code><span style="color:#79C0FF">LANGFLOW_SUPERUSER_PASSWORD</span></code></span>: The password for the superuser.</li>
<li><span data-ch-theme="github-dark" class="ch-inline-code not-prose"><code><span style="color:#79C0FF">LANGFLOW_SECRET_KEY</span></code></span>: A key used for encrypting the superuser&#x27;s password.</li>
<li><span data-ch-theme="github-dark" class="ch-inline-code not-prose"><code><span style="color:#79C0FF">LANGFLOW_NEW_USER_IS_ACTIVE</span></code></span>: Determines whether new users are automatically activated. Default is <code>False</code>.</li>
</ul>
<p>All of these variables can be passed to the CLI command <span data-ch-theme="github-dark" class="ch-inline-code not-prose"><code><span style="color:#C9D1D9">langflow run</span></code></span> through the <span data-ch-theme="github-dark" class="ch-inline-code not-prose"><code><span style="color:#FF7B72">--</span><span style="color:#C9D1D9">env</span><span style="color:#FF7B72">-</span><span style="color:#C9D1D9">file</span></code></span> option. For example:</p>
<div class="ch-codeblock not-prose" data-ch-theme="github-dark"><div class="ch-code-wrapper ch-code" data-ch-measured="false"><code class="ch-code-scroll-parent"><br><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>langflow run --env-file .env</span></div></div><br></code></div></div>
<blockquote>
<p>ℹ︎ INFO
It is critical not to expose these environment variables in your code repository. Always set them securely in your deployment environment, for example, using Docker secrets, Kubernetes ConfigMaps/Secrets, or dedicated secure environment configuration systems like AWS Secrets Manager.</p>
</blockquote>
<h3 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="8b10059e0fbc44f3bc8ce63fe7692e7e"><span data-ch-theme="github-dark" class="ch-inline-code not-prose"><code><span style="color:#79C0FF">LANGFLOW_AUTO_LOGIN</span></code></span><a class="hash-link" aria-label="Direct link to 8b10059e0fbc44f3bc8ce63fe7692e7e" title="Direct link to 8b10059e0fbc44f3bc8ce63fe7692e7e" href="/configuration-authentication#8b10059e0fbc44f3bc8ce63fe7692e7e">​</a></h3>
<p>By default, this variable is set to <code>True</code>. When enabled (<code>True</code>), Langflow operates as it did in versions prior to 0.5—automatic login without requiring explicit user authentication.</p>
<p>To disable automatic login and enforce user authentication:</p>
<div class="ch-codeblock not-prose" data-ch-theme="github-dark"><div class="ch-code-wrapper ch-code" data-ch-measured="false"><code class="ch-code-scroll-parent"><br><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>export LANGFLOW_AUTO_LOGIN=False</span></div></div><br></code></div></div>
<h3 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="a61a651a0fc7443a82cec93c07a14503"><span data-ch-theme="github-dark" class="ch-inline-code not-prose"><code><span style="color:#79C0FF">LANGFLOW_SUPERUSER</span></code></span> and <span data-ch-theme="github-dark" class="ch-inline-code not-prose"><code><span style="color:#79C0FF">LANGFLOW_SUPERUSER_PASSWORD</span></code></span><a class="hash-link" aria-label="Direct link to a61a651a0fc7443a82cec93c07a14503" title="Direct link to a61a651a0fc7443a82cec93c07a14503" href="/configuration-authentication#a61a651a0fc7443a82cec93c07a14503">​</a></h3>
<p>These environment variables are only relevant when <code>LANGFLOW_AUTO_LOGIN</code> is set to <code>False</code>. They specify the username and password for the superuser, which is essential for administrative tasks.</p>
<p>To create a superuser manually:</p>
<div class="ch-codeblock not-prose" data-ch-theme="github-dark"><div class="ch-code-wrapper ch-code" data-ch-measured="false"><code class="ch-code-scroll-parent"><br><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>export LANGFLOW_SUPERUSER=admin</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>export LANGFLOW_SUPERUSER_PASSWORD=securepassword</span></div></div><br></code></div></div>
<p>You can also use the CLI command <code>langflow superuser</code> to set up a superuser interactively.</p>
<h3 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="977aea34e6174c58bd76107990d62a1f"><span data-ch-theme="github-dark" class="ch-inline-code not-prose"><code><span style="color:#79C0FF">LANGFLOW_SECRET_KEY</span></code></span><a class="hash-link" aria-label="Direct link to 977aea34e6174c58bd76107990d62a1f" title="Direct link to 977aea34e6174c58bd76107990d62a1f" href="/configuration-authentication#977aea34e6174c58bd76107990d62a1f">​</a></h3>
<p>This environment variable holds a secret key used for encrypting the superuser&#x27;s password. Make sure to set this to a secure, randomly generated string.</p>
<div class="ch-codeblock not-prose" data-ch-theme="github-dark"><div class="ch-code-wrapper ch-code" data-ch-measured="false"><code class="ch-code-scroll-parent"><br><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>export LANGFLOW_SECRET_KEY=randomly_generated_secure_key</span></div></div><br></code></div></div>
<h3 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="c8f5df9283be4e20be51e14518f5272e"><span data-ch-theme="github-dark" class="ch-inline-code not-prose"><code><span style="color:#79C0FF">LANGFLOW_NEW_USER_IS_ACTIVE</span></code></span><a class="hash-link" aria-label="Direct link to c8f5df9283be4e20be51e14518f5272e" title="Direct link to c8f5df9283be4e20be51e14518f5272e" href="/configuration-authentication#c8f5df9283be4e20be51e14518f5272e">​</a></h3>
<p>By default, this variable is set to <code>False</code>. When enabled (<code>True</code>), new users are automatically activated and can log in without requiring explicit activation by the superuser.</p>
<h2 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="3b0c36a5cc0f4acc95c884d3de858d46">Manage superusers with the CLI<a class="hash-link" aria-label="Direct link to Manage superusers with the CLI" title="Direct link to Manage superusers with the CLI" href="/configuration-authentication#3b0c36a5cc0f4acc95c884d3de858d46">​</a></h2>
<p>Langflow provides a command-line utility for managing superusers:</p>
<div class="ch-codeblock not-prose" data-ch-theme="github-dark"><div class="ch-code-wrapper ch-code" data-ch-measured="false"><code class="ch-code-scroll-parent"><br><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>langflow superuser</span></div></div><br></code></div></div>
<p>This command prompts you to enter the username and password for the superuser, unless they are already set using environment variables.</p>
<h2 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="736ebb8c854b4c268d5e748c119a08ea">Sign in<a class="hash-link" aria-label="Direct link to Sign in" title="Direct link to Sign in" href="/configuration-authentication#736ebb8c854b4c268d5e748c119a08ea">​</a></h2>
<p>With <span data-ch-theme="github-dark" class="ch-inline-code not-prose"><code><span style="color:#79C0FF">LANGFLOW_AUTO_LOGIN</span></code></span> set to <span data-ch-theme="github-dark" class="ch-inline-code not-prose"><code><span style="color:#C9D1D9">False</span></code></span>, Langflow requires users to sign up before they can log in. The sign-up page is the default landing page when a user visits Langflow for the first time.</p>
<p><img decoding="async" loading="lazy" src="/assets/images/1009571828-8840dd6a62739230e43b0a557518b5ff.png" width="584" height="832" class="img_ev3q"></p>
<h2 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="dd5926e12471448d99bd6849d2149dc8">Profile settings<a class="hash-link" aria-label="Direct link to Profile settings" title="Direct link to Profile settings" href="/configuration-authentication#dd5926e12471448d99bd6849d2149dc8">​</a></h2>
<p>Once signed in, you can change your profile settings by clicking on the profile icon in the top right corner of the Langflow dashboard. This opens a dropdown menu with the following options:</p>
<ul>
<li>
<p><strong>Admin Page</strong>: Opens the admin page, which is only accessible to the superuser.</p>
</li>
<li>
<p><strong>Profile Settings</strong>: Opens the profile settings page.</p>
</li>
<li>
<p><strong>Sign Out</strong>: Logs the user out.</p>
<p><img decoding="async" loading="lazy" src="/assets/images/563306242-e3f3830c789f4c5c23e6794c29c0d71d.png" width="404" height="381" class="img_ev3q"></p>
</li>
</ul>
<p>Select <strong>Profile Settings</strong> to change your password and your profile picture.</p>
<p><img decoding="async" loading="lazy" src="/assets/images/1813063533-a712786cbca2cf05bc6778154e53ffad.png" width="2079" height="721" class="img_ev3q"></p>
<p>Select <strong>Admin Page</strong> to manage users and groups as the superuser.</p>
<p><img decoding="async" loading="lazy" src="/assets/images/383358552-b5376c867c0f56e5572991427f902303.png" width="2190" height="1540" class="img_ev3q"></p></div></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Docs pages"><a class="pagination-nav__link pagination-nav__link--prev" href="/settings-project-general-settings"><div class="pagination-nav__sublabel">Previous</div><div class="pagination-nav__label">Project &amp; General Settings</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/configuration-api-keys"><div class="pagination-nav__sublabel">Next</div><div class="pagination-nav__label">API Keys</div></a></nav></div></div><div class="col col--3"><div class="tableOfContents_bqdL thin-scrollbar theme-doc-toc-desktop"><ul class="table-of-contents table-of-contents__left-border"><li><a class="table-of-contents__link toc-highlight" href="/configuration-authentication#f480dac5d2094d75a433de0b8e195641">Sign Up and Sign In</a></li><li><a class="table-of-contents__link toc-highlight" href="/configuration-authentication#3ed7cae6f5324ba0ac14783cf2a6cc07">Environment variables</a><ul><li><a class="table-of-contents__link toc-highlight" href="/configuration-authentication#8b10059e0fbc44f3bc8ce63fe7692e7e">LANGFLOW_AUTO_LOGIN</a></li><li><a class="table-of-contents__link toc-highlight" href="/configuration-authentication#a61a651a0fc7443a82cec93c07a14503">LANGFLOW_SUPERUSER and LANGFLOW_SUPERUSER_PASSWORD</a></li><li><a class="table-of-contents__link toc-highlight" href="/configuration-authentication#977aea34e6174c58bd76107990d62a1f">LANGFLOW_SECRET_KEY</a></li><li><a class="table-of-contents__link toc-highlight" href="/configuration-authentication#c8f5df9283be4e20be51e14518f5272e">LANGFLOW_NEW_USER_IS_ACTIVE</a></li></ul></li><li><a class="table-of-contents__link toc-highlight" href="/configuration-authentication#3b0c36a5cc0f4acc95c884d3de858d46">Manage superusers with the CLI</a></li><li><a class="table-of-contents__link toc-highlight" href="/configuration-authentication#736ebb8c854b4c268d5e748c119a08ea">Sign in</a></li><li><a class="table-of-contents__link toc-highlight" href="/configuration-authentication#dd5926e12471448d99bd6849d2149dc8">Profile settings</a></li></ul></div></div></div></div></main></div></div></div><div id="ms-floating-button" class="ms-fixed ms-bottom-4 ms-right-8 ms-z-[100] ms-flex ms-flex-col ms-items-end hover:ms-cursor-pointer"><div class="ms-relative ms-mb-4"><div style="background-color:#f6f6f6" class="ms-absolute -ms-bottom-1 ms-right-6 -ms-z-10 ms-h-4 ms-w-4 ms-rotate-45"></div><div style="background-color:#f6f6f6" class="ms-z-10 ms-flex ms-items-center ms-justify-center ms-rounded-lg ms-px-3 ms-py-2"><p style="color:#000000;margin:0" class="ms-text-sm">Hi, how can I help you?</p></div></div><div style="background-color:#f6f6f6" class="ms-flex ms-h-16 ms-w-16 ms-flex-col ms-items-center ms-justify-center ms-self-end ms-rounded-full ms-p-2 ms-transition"><div class="ms-rotate-0 ms-flex ms-h-full ms-w-full ms-transform ms-cursor-pointer ms-items-center ms-justify-center ms-rounded-full ms-transition-all ms-delay-75 ms-duration-100 ms-ease-in-out"><div style="color:#000000;font-size:22px;width:48px;height:48px;margin:0px;padding:0px;display:flex;align-items:center;justify-content:center;text-align:center"><img src="/img/chain.png" style="width:40px"></div></div></div><div></div></div></div>
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