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.68-.57.33-.87L12.67 3.6c-.38-.34-.96-.34-1.34 0l-8.36 7.53c-.34.3-.13.87.33.87H5v7c0 .55.45 1 1 1h3c.55 0 1-.45 1-1z" fill="currentColor"></path></svg></a></li><li class="breadcrumbs__item"><span class="breadcrumbs__link">Configuration</span><meta itemprop="position" content="1"></li><li itemscope="" itemprop="itemListElement" itemtype="https://schema.org/ListItem" class="breadcrumbs__item breadcrumbs__item--active"><span class="breadcrumbs__link" itemprop="name">API Keys</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>API Keys</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>
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<div class="theme-admonition theme-admonition-info admonition_xJq3 alert alert--info"><div class="admonitionHeading_Gvgb"><span class="admonitionIcon_Rf37"><svg viewBox="0 0 14 16"><path fill-rule="evenodd" d="M7 2.3c3.14 0 5.7 2.56 5.7 5.7s-2.56 5.7-5.7 5.7A5.71 5.71 0 0 1 1.3 8c0-3.14 2.56-5.7 5.7-5.7zM7 1C3.14 1 0 4.14 0 8s3.14 7 7 7 7-3.14 7-7-3.14-7-7-7zm1 3H6v5h2V4zm0 6H6v2h2v-2z"></path></svg></span>info</div><div class="admonitionContent_BuS1"><p>This page may contain outdated information. It will be updated as soon as possible.</p></div></div>
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<p>Langflow provides an API key functionality that allows users to access their individual components and flows without traditional login authentication. The API key is a user-specific token that can be included in the request header or query parameter to authenticate API calls. This documentation outlines how to generate, use, and manage API keys in Langflow.</p>
|
||
<div class="theme-admonition theme-admonition-info admonition_xJq3 alert alert--info"><div class="admonitionHeading_Gvgb"><span class="admonitionIcon_Rf37"><svg viewBox="0 0 14 16"><path fill-rule="evenodd" d="M7 2.3c3.14 0 5.7 2.56 5.7 5.7s-2.56 5.7-5.7 5.7A5.71 5.71 0 0 1 1.3 8c0-3.14 2.56-5.7 5.7-5.7zM7 1C3.14 1 0 4.14 0 8s3.14 7 7 7 7-3.14 7-7-3.14-7-7-7zm1 3H6v5h2V4zm0 6H6v2h2v-2z"></path></svg></span>info</div><div class="admonitionContent_BuS1"><p>The default user and password are set using the LANGFLOW_SUPERUSER and LANGFLOW_SUPERUSER_PASSWORD environment variables. The default values are langflow and langflow, respectively.</p></div></div>
|
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<h2 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="c29986a69cad4cdbbe7537e383ea7207">Generate an API key<a class="hash-link" aria-label="Direct link to Generate an API key" title="Direct link to Generate an API key" href="/configuration-api-keys#c29986a69cad4cdbbe7537e383ea7207"></a></h2>
|
||
<p>Generate a user-specific token to use with Langflow.</p>
|
||
<h3 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="3d90098ddd7c44b6836c0273acf57123">Generate an API key with the Langflow UI<a class="hash-link" aria-label="Direct link to Generate an API key with the Langflow UI" title="Direct link to Generate an API key with the Langflow UI" href="/configuration-api-keys#3d90098ddd7c44b6836c0273acf57123"></a></h3>
|
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<ol>
|
||
<li>
|
||
<p>Click on the "API Key" icon.</p>
|
||
<p><img decoding="async" loading="lazy" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAARYAAABMCAYAAACoL5hqAAAAAXNSR0IArs4c6QAAAGxlWElmTU0AKgAAAAgABAEaAAUAAAABAAAAPgEbAAUAAAABAAAARgEoAAMAAAABAAIAAIdpAAQAAAABAAAATgAAAAAAAACQAAAAAQAAAJAAAAABAAKgAgAEAAAAAQAAARagAwAEAAAAAQAAAEwAAAAA6/q71wAAAAlwSFlzAAAWJQAAFiUBSVIk8AAACrBJREFUeAHtnXuIVUUcx3+6qfhKMw1tNXNt7WWZPd2g1CyyoohKCqo/ovwjiiQiiqgIgsIgeheURoFlUlFEaoRKGmRv2+ilm4/Sba3V0rItzbL7PdffdTx77t5z7plx75zzHVjPuefM/M7MZ2a+85s5D3v8vWv3HmEgARIgAYsEelq0RVMkQAIkEBCgsLAhkAAJWCdAYbGOlAZJgAQoLGwDJEAC1glQWKwjpUESIAEKC9sACZCAdQIUFutIaZAESIDCwjZAAiRgnQCFxTpSGiQBEqCwsA2QAAlYJ0BhsY6UBkmABCgsbAMkQALWCVBYrCOlQRIgAQoL2wAJkIB1AhQW60hpkARIgMLCNkACJGCdAIXFOlIaJAESoLCwDZAACVgnQGGxjpQGSYAEDiICEuiKQMu6TcHpxUs/LEUb21Af7I8bM0oaG0aWjnPHHYHHn3tNwP2iaU3uLmLRco88fUwbnYQdIV7rAavH5rwaK/IF0yZ50+BjFajGIkFU1qzfGORq1g0zvGjDmfVY0DF0lNVK0fby5AO36i63EQQWLl1ZYqen4Z0gYNRUrnpOf/symmq+fdiaogIB92VgzJzHooISFhOzEVFYTBr775sNGWe6GiGjBIhs9+eZ5tfsJ16SjW2/BCZ88wozIyzlBEVHWhUa3yooTcNMmtYUCnC7ZeYVsUxUmy6W8ZxGuu+hubJl2+9B6RvHjJRZM2d4RaLu7nvuvc+rHEdkFg173uvvyta9FYFOcc0V58u1hb8hhxwsi5atDFJRVCLg7T1kigM4gV3cMK5hlOB/vft+/aagDrCPYwzVEYDXuHFzeynxr4V27RtT7283mx0CNYFOgZFW56LqqeAc1wBAITroOgnOVsMJadQ7hC14kAzJCZhTUXgqGsAUbd2X4LWwhEUF6wHhTrF2XWtQF9rofamYA5lPs8FCmKsNZlpT0Ku1l7d0pqiAJaY/JlOfxMVbYdE1FW185RYZtYHrsxcan9t9BEzxDQvzvliV9+AlqoCrzcqpGAMEwqKi9YBtWFx88Aa9FRbzGQuA16mP2Ux9qAAzv92170J81WZ3lcmn695+/9Ol51TQllVUtAxR4qLnanXrpbCEXfdwRUTB1pE06hyP2SNgjq72rGbXEm4p//XXzqCAWFMp15ZND9AH79tLYUm70JjdZpq8ZKZXZ1t8TdvJc5b9FMHdn73PqaC0LYW7auagqQTKTZP0fC1uvRMWE3yl0dGcHtE1j25+5BLNxfXRsFioqIcXaMPxynk0rvOb1L7Xj/THgYwKQ+cJXMlpSfHkK74pxNWW3LQB7ubvam3WerrN7b/J2h9aZcuWbbJz1y7p07u3DB06WMaOrpfhww7plP1IsSi0TT2uHjnarAp/1NpLJ8M1dMA7YVHolbyVMGNUEFzzPDT0cNn52w2BVV+1yPIPVsn3G4qPNERd5agj62XymRNl4vjG4LSKB36ExQLPX+l5bedR8QJDNf6Pd1OhpDxNATIrK6mdrMdXV9xGOdWWueBow26t2Ni1e7e8sGCRzH357f1Epe6gOhnQv69gqwGig3iI/+izr1b0QCAuyg82wuKjdmt9653HkhQoPBRUDkQFXgvWaOJMoZJex9f4We38ruoDd3CeevEN2fBjW3CJvn37yJSmiTLh+EYZOWJo6bKb2rZI89ct8t7KVcFdn0+bV5fOVRILiIuuJfraVr0SFvMug6nqpRors4PK0fmqei1JKgyVrOmy+vauD7cwy1TvAT38woLFJVE5ZcLRMuPiqTKgX99OeYDI4G/ymSfJ3PmLpGXtj0GcYYcOjjWwJWmfnS5eAwcyPxVSxuEpkY4Iej5qCyHDnFdFBXFMcYtK49sxXRy0mW9lretaNm13p60l738mX69ZH2Sh6dTxct2VF0aKiplHiM6s6y+XkYcfFhxu37pNYCfrwSuPJc3CK9LisX+dEmGLP3g+OlqrF4QOoR5OuAGkyUPYVnf/NsXV1QgJlllg9u+//8m7Kz4Oqqx+xDC5+rLzElXfnTdfLQ8+MU9a29oDO1MLC7p1ddkd170SFrMmq2mwaOCNDcX5q3ohsIM/hMWy77uu5rWyuq8MVFBtlROcYRNcgzWcDNzm/7j5O+n48+8A0flTTq8KFdI9P39hYAf2mk4+rio7PiTyTjK1E6RZdMToDO8FLrvaC1cWjuNP44XP+/7bnNKpx2azTFmbDq1u2RDgGdC/n5x8wriqUCEd0iOovaoMeZDIa48lDd+i91L43sXe0dTsaGHXXV941M6S5rq1kla9NOTHxTTIZAjPCJ6iz6F189Yg+w1HjEhVDKT/8tu1ovZSGavhxN55LGbnNsUgLWMVGrNDwKa5DpH2GrWSHtx0GmTytJ0/9QYhYjbrynY+49jb8WdHEG3Qwf3jRC8bR9OrvbIRPT/hnbCg42uD1c7hsg7Ma7gY2V3mvZxts0zKslzcNMdN0TKvmcZmd6Xt2bPYVbCImyZoerWXxlYtp/VyKoQGu2ZOcdEVHoWrDm96K2YnqeUKrZQ3lMmcBuk0r1K6tOdxTdy6x8NfPoYhgwbK9t93CG4XpwmaHvayHLzzWFAZYa/FhZuNDmiOsq7E60A2LnMKdCCvq9cyBU2P+bIdPWp4kFV82qCjo3h3KGnekQ7pEdReUhu+xPfSYwFc9Vqwj1G33KcpcT5pCHdA2M5CgCB3p+flctrlun7GH9Mg7xVeOERY8VGzTJ96RuJLIp0G2Mty8Pr/FQp7Feg0aT0LiIo5PbBhM8sNKE9le/iZV2T9xjbp0bOH3HHTNfu9G1SJA94dmv3UPNnz3x4ZM2qE3HbjVZWSeH3ey6mQEoeImCMwpi7muojGi7tFWopKXFr5i6dtDeKAt5Xbt26PBQHxEB/pENROrMSeRvLaY1HmYc8Fx5N4Gjr1MdcAkqTXfHCbfQILlxTW3pYVn9DGw26XXzRZTjvpmLIF/+SL7+T1hctFby9fcE7Bqz63qWz8rJzIhLCgMsJTGK0gc3Qw5/gQkaj3gRAHacLPs6g9bosEwDuvjN58531ZsuLTUlPAu0MnHjs2eNGwX+EzCh2FTyts+umX4oNwhXeDNJx79qly6fSz9Gemt5kRFq2lKO9Fz3W1paBE09EvmpkenDIGM19vH0eXNv7RlZ9/I28VBOaPHcUH57pKOXBAP7mkIChZfjcoXP7MCYsWEI0fwbxlrOd0qx4MPRQl0nl7812PlA6CU9jLy+r3aUqF7mLnn392y/IPm2XVl6vlh9afO8UcXT9cJp44TiZPmiC9enl7A7ZTueIcyKywRBUe7jtCXl34KCaVjpWbYiKdzVv8lfJR6+fxZbn2X7fLzp2Fj2n36S3DhgwSfF0uryFXwpLXSk5bboiLrkmpLXp5SoLbKAIUligqPEYCJJCKgNfPsaQqOROTAAk4I0BhcYaWhkkgvwQoLPmte5acBJwRoLA4Q0vDJJBfAhSW/NY9S04CzghQWJyhpWESyC8BCkt+654lJwFnBCgsztDSMAnklwCFJb91z5KTgDMCFBZnaGmYBPJLgMKS37pnyUnAGQEKizO0NEwC+SVAYclv3bPkJOCMAIXFGVoaJoH8EqCw5LfuWXIScEaAwuIMLQ2TQH4JUFjyW/csOQk4I0BhcYaWhkkgvwQoLPmte5acBJwR+B9AhgpkQpVtwgAAAABJRU5ErkJggg==" width="278" height="76" class="img_ev3q"></p>
|
||
</li>
|
||
<li>
|
||
<p>Click on "Create new secret key".</p>
|
||
</li>
|
||
<li>
|
||
<p>Give it an optional name.</p>
|
||
</li>
|
||
<li>
|
||
<p>Click on "Create secret key".</p>
|
||
</li>
|
||
<li>
|
||
<p>Copy the API key and store it in a secure location.</p>
|
||
</li>
|
||
</ol>
|
||
<h3 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="2368f62fc4b8477e8080c9c2d3659d76">Generate an API key with the Langflow CLI<a class="hash-link" aria-label="Direct link to Generate an API key with the Langflow CLI" title="Direct link to Generate an API key with the Langflow CLI" href="/configuration-api-keys#2368f62fc4b8477e8080c9c2d3659d76"></a></h3>
|
||
<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">_<!-- -->13</span><div style="display:inline-block;margin-left:16px"><span>langflow api-key</span></div></div><div><span class="ch-code-line-number">_<!-- -->13</span><div style="display:inline-block;margin-left:16px"><span># or</span></div></div><div><span class="ch-code-line-number">_<!-- -->13</span><div style="display:inline-block;margin-left:16px"><span>python -m langflow api-key</span></div></div><div><span class="ch-code-line-number">_<!-- -->13</span><div style="display:inline-block;margin-left:16px"><span>╭─────────────────────────────────────────────────────────────────────╮</span></div></div><div><span class="ch-code-line-number">_<!-- -->13</span><div style="display:inline-block;margin-left:16px"><span>│ API Key Created Successfully: │</span></div></div><div><span class="ch-code-line-number">_<!-- -->13</span><div style="display:inline-block;margin-left:16px"><span>│ │</span></div></div><div><span class="ch-code-line-number">_<!-- -->13</span><div style="display:inline-block;margin-left:16px"><span>│ sk-O0elzoWID1izAH8RUKrnnvyyMwIzHi2Wk-uXWoNJ2Ro │</span></div></div><div><span class="ch-code-line-number">_<!-- -->13</span><div style="display:inline-block;margin-left:16px"><span>│ │</span></div></div><div><span class="ch-code-line-number">_<!-- -->13</span><div style="display:inline-block;margin-left:16px"><span>│ This is the only time the API key will be displayed. │</span></div></div><div><span class="ch-code-line-number">_<!-- -->13</span><div style="display:inline-block;margin-left:16px"><span>│ Make sure to store it in a secure location. │</span></div></div><div><span class="ch-code-line-number">_<!-- -->13</span><div style="display:inline-block;margin-left:16px"><span>│ │</span></div></div><div><span class="ch-code-line-number">_<!-- -->13</span><div style="display:inline-block;margin-left:16px"><span>│ The API key has been copied to your clipboard. Cmd + V to paste it. │</span></div></div><div><span class="ch-code-line-number">_<!-- -->13</span><div style="display:inline-block;margin-left:16px"><span>╰──────────────────────────────</span></div></div><br></code></div></div>
|
||
<h2 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="ae787e4b0d3846aa9094fac75e0ac04f">Use the Langflow API key<a class="hash-link" aria-label="Direct link to Use the Langflow API key" title="Direct link to Use the Langflow API key" href="/configuration-api-keys#ae787e4b0d3846aa9094fac75e0ac04f"></a></h2>
|
||
<p>Include your API key in API requests to authenticate requests to Langflow.</p>
|
||
<h3 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="70965b3ad24d467ca4f90e7c13a1f394">Use the <code>x-api-key</code> header<a class="hash-link" aria-label="Direct link to 70965b3ad24d467ca4f90e7c13a1f394" title="Direct link to 70965b3ad24d467ca4f90e7c13a1f394" href="/configuration-api-keys#70965b3ad24d467ca4f90e7c13a1f394"></a></h3>
|
||
<p>Include the <code>x-api-key</code> in the HTTP header when making API requests:</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>curl -X POST \\</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span> <http://localhost:3000/api/v1/run/><your_flow_id> \\</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span> -H 'Content-Type: application/json'\\</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span> -H 'x-api-key: <your api key>'\\</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span> -d '{"inputs": {"text":""}, "tweaks": {}}'</span></div></div><br></code></div></div>
|
||
<p>With Python using <code>requests</code>:</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">_<!-- -->38</span><div style="display:inline-block;margin-left:16px"><span>import requests</span></div></div><div><span class="ch-code-line-number">_<!-- -->38</span><div style="display:inline-block;margin-left:16px"><span>from typing import Optional</span></div></div><div><span class="ch-code-line-number">_<!-- -->38</span><div style="display:inline-block;margin-left:16px"><span></span></div></div><div><span class="ch-code-line-number">_<!-- -->38</span><div style="display:inline-block;margin-left:16px"><span>BASE_API_URL = "<http://localhost:3001/api/v1/process>"</span></div></div><div><span class="ch-code-line-number">_<!-- -->38</span><div style="display:inline-block;margin-left:16px"><span>FLOW_ID = "4441b773-0724-434e-9cee-19d995d8f2df"</span></div></div><div><span class="ch-code-line-number">_<!-- -->38</span><div style="display:inline-block;margin-left:16px"><span># You can tweak the flow by adding a tweaks dictionary</span></div></div><div><span class="ch-code-line-number">_<!-- -->38</span><div style="display:inline-block;margin-left:16px"><span># e.g {"OpenAI-XXXXX": {"model_name": "gpt-4"}}</span></div></div><div><span class="ch-code-line-number">_<!-- -->38</span><div style="display:inline-block;margin-left:16px"><span>TWEAKS = {}</span></div></div><div><span class="ch-code-line-number">_<!-- -->38</span><div style="display:inline-block;margin-left:16px"><span></span></div></div><div><span class="ch-code-line-number">_<!-- -->38</span><div style="display:inline-block;margin-left:16px"><span>def run_flow(inputs: dict,</span></div></div><div><span class="ch-code-line-number">_<!-- -->38</span><div style="display:inline-block;margin-left:16px"><span> flow_id: str,</span></div></div><div><span class="ch-code-line-number">_<!-- -->38</span><div style="display:inline-block;margin-left:16px"><span> tweaks: Optional[dict] = None,</span></div></div><div><span class="ch-code-line-number">_<!-- -->38</span><div style="display:inline-block;margin-left:16px"><span> apiKey: Optional[str] = None) -> dict:</span></div></div><div><span class="ch-code-line-number">_<!-- -->38</span><div style="display:inline-block;margin-left:16px"><span> """</span></div></div><div><span class="ch-code-line-number">_<!-- -->38</span><div style="display:inline-block;margin-left:16px"><span> Run a flow with a given message and optional tweaks.</span></div></div><div><span class="ch-code-line-number">_<!-- -->38</span><div style="display:inline-block;margin-left:16px"><span></span></div></div><div><span class="ch-code-line-number">_<!-- -->38</span><div style="display:inline-block;margin-left:16px"><span> :param message: The message to send to the flow</span></div></div><div><span class="ch-code-line-number">_<!-- -->38</span><div style="display:inline-block;margin-left:16px"><span> :param flow_id: The ID of the flow to run</span></div></div><div><span class="ch-code-line-number">_<!-- -->38</span><div style="display:inline-block;margin-left:16px"><span> :param tweaks: Optional tweaks to customize the flow</span></div></div><div><span class="ch-code-line-number">_<!-- -->38</span><div style="display:inline-block;margin-left:16px"><span> :return: The JSON response from the flow</span></div></div><div><span class="ch-code-line-number">_<!-- -->38</span><div style="display:inline-block;margin-left:16px"><span> """</span></div></div><div><span class="ch-code-line-number">_<!-- -->38</span><div style="display:inline-block;margin-left:16px"><span> api_url = f"{BASE_API_URL}/{flow_id}"</span></div></div><div><span class="ch-code-line-number">_<!-- -->38</span><div style="display:inline-block;margin-left:16px"><span></span></div></div><div><span class="ch-code-line-number">_<!-- -->38</span><div style="display:inline-block;margin-left:16px"><span> payload = {"inputs": inputs}</span></div></div><div><span class="ch-code-line-number">_<!-- -->38</span><div style="display:inline-block;margin-left:16px"><span> headers = {}</span></div></div><div><span class="ch-code-line-number">_<!-- -->38</span><div style="display:inline-block;margin-left:16px"><span></span></div></div><div><span class="ch-code-line-number">_<!-- -->38</span><div style="display:inline-block;margin-left:16px"><span> if tweaks:</span></div></div><div><span class="ch-code-line-number">_<!-- -->38</span><div style="display:inline-block;margin-left:16px"><span> payload["tweaks"] = tweaks</span></div></div><div><span class="ch-code-line-number">_<!-- -->38</span><div style="display:inline-block;margin-left:16px"><span> if apiKey:</span></div></div><div><span class="ch-code-line-number">_<!-- -->38</span><div style="display:inline-block;margin-left:16px"><span> headers = {"x-api-key": apiKey}</span></div></div><div><span class="ch-code-line-number">_<!-- -->38</span><div style="display:inline-block;margin-left:16px"><span></span></div></div><div><span class="ch-code-line-number">_<!-- -->38</span><div style="display:inline-block;margin-left:16px"><span> response = requests.post(api_url, json=payload, headers=headers)</span></div></div><div><span class="ch-code-line-number">_<!-- -->38</span><div style="display:inline-block;margin-left:16px"><span> return response.json()</span></div></div><div><span class="ch-code-line-number">_<!-- -->38</span><div style="display:inline-block;margin-left:16px"><span></span></div></div><div><span class="ch-code-line-number">_<!-- -->38</span><div style="display:inline-block;margin-left:16px"><span># Setup any tweaks you want to apply to the flow</span></div></div><div><span class="ch-code-line-number">_<!-- -->38</span><div style="display:inline-block;margin-left:16px"><span>inputs = {"text":""}</span></div></div><div><span class="ch-code-line-number">_<!-- -->38</span><div style="display:inline-block;margin-left:16px"><span>api_key = "<your api key>"</span></div></div><div><span class="ch-code-line-number">_<!-- -->38</span><div style="display:inline-block;margin-left:16px"><span>print(run_flow(inputs, flow_id=FLOW_ID, tweaks=TWEAKS, apiKey=api_key))</span></div></div><br></code></div></div>
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<h3 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="febb797f3bb5403b9f070afc0fa4f453">Use the query parameter<a class="hash-link" aria-label="Direct link to Use the query parameter" title="Direct link to Use the query parameter" href="/configuration-api-keys#febb797f3bb5403b9f070afc0fa4f453"></a></h3>
|
||
<p>Include the API key as a query parameter in the URL:</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>curl -X POST \\</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span> <http://localhost:3000/api/v1/process/><your_flow_id>?x-api-key=<your_api_key> \\</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span> -H 'Content-Type: application/json'\\</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span> -d '{"inputs": {"text":""}, "tweaks": {}}'</span></div></div><br></code></div></div>
|
||
<p>With Python using <code>requests</code>:</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">_<!-- -->37</span><div style="display:inline-block;margin-left:16px"><span>import requests</span></div></div><div><span class="ch-code-line-number">_<!-- -->37</span><div style="display:inline-block;margin-left:16px"><span></span></div></div><div><span class="ch-code-line-number">_<!-- -->37</span><div style="display:inline-block;margin-left:16px"><span>BASE_API_URL = "<http://localhost:3001/api/v1/process>"</span></div></div><div><span class="ch-code-line-number">_<!-- -->37</span><div style="display:inline-block;margin-left:16px"><span>FLOW_ID = "4441b773-0724-434e-9cee-19d995d8f2df"</span></div></div><div><span class="ch-code-line-number">_<!-- -->37</span><div style="display:inline-block;margin-left:16px"><span># You can tweak the flow by adding a tweaks dictionary</span></div></div><div><span class="ch-code-line-number">_<!-- -->37</span><div style="display:inline-block;margin-left:16px"><span># e.g {"OpenAI-XXXXX": {"model_name": "gpt-4"}}</span></div></div><div><span class="ch-code-line-number">_<!-- -->37</span><div style="display:inline-block;margin-left:16px"><span>TWEAKS = {}</span></div></div><div><span class="ch-code-line-number">_<!-- -->37</span><div style="display:inline-block;margin-left:16px"><span></span></div></div><div><span class="ch-code-line-number">_<!-- -->37</span><div style="display:inline-block;margin-left:16px"><span>def run_flow(inputs: dict,</span></div></div><div><span class="ch-code-line-number">_<!-- -->37</span><div style="display:inline-block;margin-left:16px"><span> flow_id: str,</span></div></div><div><span class="ch-code-line-number">_<!-- -->37</span><div style="display:inline-block;margin-left:16px"><span> tweaks: Optional[dict] = None,</span></div></div><div><span class="ch-code-line-number">_<!-- -->37</span><div style="display:inline-block;margin-left:16px"><span> apiKey: Optional[str] = None) -> dict:</span></div></div><div><span class="ch-code-line-number">_<!-- -->37</span><div style="display:inline-block;margin-left:16px"><span> """</span></div></div><div><span class="ch-code-line-number">_<!-- -->37</span><div style="display:inline-block;margin-left:16px"><span> Run a flow with a given message and optional tweaks.</span></div></div><div><span class="ch-code-line-number">_<!-- -->37</span><div style="display:inline-block;margin-left:16px"><span></span></div></div><div><span class="ch-code-line-number">_<!-- -->37</span><div style="display:inline-block;margin-left:16px"><span> :param message: The message to send to the flow</span></div></div><div><span class="ch-code-line-number">_<!-- -->37</span><div style="display:inline-block;margin-left:16px"><span> :param flow_id: The ID of the flow to run</span></div></div><div><span class="ch-code-line-number">_<!-- -->37</span><div style="display:inline-block;margin-left:16px"><span> :param tweaks: Optional tweaks to customize the flow</span></div></div><div><span class="ch-code-line-number">_<!-- -->37</span><div style="display:inline-block;margin-left:16px"><span> :return: The JSON response from the flow</span></div></div><div><span class="ch-code-line-number">_<!-- -->37</span><div style="display:inline-block;margin-left:16px"><span> """</span></div></div><div><span class="ch-code-line-number">_<!-- -->37</span><div style="display:inline-block;margin-left:16px"><span> api_url = f"{BASE_API_URL}/{flow_id}"</span></div></div><div><span class="ch-code-line-number">_<!-- -->37</span><div style="display:inline-block;margin-left:16px"><span></span></div></div><div><span class="ch-code-line-number">_<!-- -->37</span><div style="display:inline-block;margin-left:16px"><span> payload = {"inputs": inputs}</span></div></div><div><span class="ch-code-line-number">_<!-- -->37</span><div style="display:inline-block;margin-left:16px"><span> headers = {}</span></div></div><div><span class="ch-code-line-number">_<!-- -->37</span><div style="display:inline-block;margin-left:16px"><span></span></div></div><div><span class="ch-code-line-number">_<!-- -->37</span><div style="display:inline-block;margin-left:16px"><span> if tweaks:</span></div></div><div><span class="ch-code-line-number">_<!-- -->37</span><div style="display:inline-block;margin-left:16px"><span> payload["tweaks"] = tweaks</span></div></div><div><span class="ch-code-line-number">_<!-- -->37</span><div style="display:inline-block;margin-left:16px"><span> if apiKey:</span></div></div><div><span class="ch-code-line-number">_<!-- -->37</span><div style="display:inline-block;margin-left:16px"><span> api_url += f"?x-api-key={apiKey}"</span></div></div><div><span class="ch-code-line-number">_<!-- -->37</span><div style="display:inline-block;margin-left:16px"><span></span></div></div><div><span class="ch-code-line-number">_<!-- -->37</span><div style="display:inline-block;margin-left:16px"><span> response = requests.post(api_url, json=payload, headers=headers)</span></div></div><div><span class="ch-code-line-number">_<!-- -->37</span><div style="display:inline-block;margin-left:16px"><span> return response.json()</span></div></div><div><span class="ch-code-line-number">_<!-- -->37</span><div style="display:inline-block;margin-left:16px"><span></span></div></div><div><span class="ch-code-line-number">_<!-- -->37</span><div style="display:inline-block;margin-left:16px"><span># Setup any tweaks you want to apply to the flow</span></div></div><div><span class="ch-code-line-number">_<!-- -->37</span><div style="display:inline-block;margin-left:16px"><span>inputs = {"text":""}</span></div></div><div><span class="ch-code-line-number">_<!-- -->37</span><div style="display:inline-block;margin-left:16px"><span>api_key = "<your api key>"</span></div></div><div><span class="ch-code-line-number">_<!-- -->37</span><div style="display:inline-block;margin-left:16px"><span>print(run_flow(inputs, flow_id=FLOW_ID, tweaks=TWEAKS, apiKey=api_key))</span></div></div><br></code></div></div>
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||
<h2 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="1273eb69a61344d19827b30dba46dfd5">Security Considerations<a class="hash-link" aria-label="Direct link to Security Considerations" title="Direct link to Security Considerations" href="/configuration-api-keys#1273eb69a61344d19827b30dba46dfd5"></a></h2>
|
||
<ul>
|
||
<li><strong>Visibility</strong>: For security reasons, the API key cannot be retrieved again through the UI.</li>
|
||
<li><strong>Scope</strong>: The key allows access only to the flows and components of the specific user to whom it was issued.</li>
|
||
</ul>
|
||
<h2 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="da933a86690a4fdeac24024472caf8a9">Custom API endpoint<a class="hash-link" aria-label="Direct link to Custom API endpoint" title="Direct link to Custom API endpoint" href="/configuration-api-keys#da933a86690a4fdeac24024472caf8a9"></a></h2>
|
||
<p>Under <strong>Project Settings</strong> > <strong>Endpoint Name</strong>, you can pick a custom name for the endpoint used to call your flow from the API.</p>
|
||
<h2 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="f0ea41ea167845cea91bb5e8f90d9df0">Revoke an API Key<a class="hash-link" aria-label="Direct link to Revoke an API Key" title="Direct link to Revoke an API Key" href="/configuration-api-keys#f0ea41ea167845cea91bb5e8f90d9df0"></a></h2>
|
||
<p>To revoke an API key, delete it from the UI. This action immediately invalidates the key and prevents it from being used again.</p></div></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Docs pages"><a class="pagination-nav__link pagination-nav__link--prev" href="/configuration-authentication"><div class="pagination-nav__sublabel">Previous</div><div class="pagination-nav__label">Authentication</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/configuration-cli"><div class="pagination-nav__sublabel">Next</div><div class="pagination-nav__label">Command Line Interface (CLI)</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-api-keys#c29986a69cad4cdbbe7537e383ea7207">Generate an API key</a><ul><li><a class="table-of-contents__link toc-highlight" href="/configuration-api-keys#3d90098ddd7c44b6836c0273acf57123">Generate an API key with the Langflow UI</a></li><li><a class="table-of-contents__link toc-highlight" href="/configuration-api-keys#2368f62fc4b8477e8080c9c2d3659d76">Generate an API key with the Langflow CLI</a></li></ul></li><li><a class="table-of-contents__link toc-highlight" href="/configuration-api-keys#ae787e4b0d3846aa9094fac75e0ac04f">Use the Langflow API key</a><ul><li><a class="table-of-contents__link toc-highlight" href="/configuration-api-keys#70965b3ad24d467ca4f90e7c13a1f394">Use the <code>x-api-key</code> header</a></li><li><a class="table-of-contents__link toc-highlight" href="/configuration-api-keys#febb797f3bb5403b9f070afc0fa4f453">Use the query parameter</a></li></ul></li><li><a class="table-of-contents__link toc-highlight" href="/configuration-api-keys#1273eb69a61344d19827b30dba46dfd5">Security Considerations</a></li><li><a class="table-of-contents__link toc-highlight" href="/configuration-api-keys#da933a86690a4fdeac24024472caf8a9">Custom API endpoint</a></li><li><a class="table-of-contents__link toc-highlight" href="/configuration-api-keys#f0ea41ea167845cea91bb5e8f90d9df0">Revoke an API Key</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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