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</li></ul></nav></div></div></aside><main class="docMainContainer_TBSr"><div class="container padding-top--md padding-bottom--lg"><div class="row"><div class="col docItemCol_z5aJ"><div class="docItemContainer_c0TR"><article><nav class="theme-doc-breadcrumbs breadcrumbsContainer_Z_bl" aria-label="Breadcrumbs"><ul class="breadcrumbs"><li class="breadcrumbs__item"><a aria-label="Home page" class="breadcrumbs__link" href="/"><svg viewBox="0 0 24 24" aria-hidden="true" focusable="false" role="presentation" class="breadcrumbHomeIcon_xK9p"><path d="M10 19v-5h4v5c0 .55.45 1 1 1h3c.55 0 1-.45 1-1v-7h1.7c.46 0 .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">Develop</span></li><li class="breadcrumbs__item"><span class="breadcrumbs__link">Bundle extensions</span></li><li class="breadcrumbs__item breadcrumbs__item--active"><span class="breadcrumbs__link">Langflow Extensions overview</span></li></ul></nav><div class="docMetaRow_c2hx"><div class="root_Eutc"><button type="button" class="button_gpNY"><span aria-hidden="true" class="icon_Bm9L"><svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-copy"><rect width="14" height="14" x="8" y="8" rx="2" ry="2"></rect><path d="M4 16c-1.1 0-2-.9-2-2V4c0-1.1.9-2 2-2h10c1.1 0 2 .9 2 2"></path></svg></span><span class="label_LzDG">Copy page</span></button></div><span class="theme-doc-version-badge badge badge--secondary">Version: 1.10.x</span></div><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>Langflow Extensions overview</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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<!-- -->
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<p>Langflow ships component bundles that are maintained and released separately from the core Langflow server as Extensions.
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Instead of every integration being built into <code>langflow</code>, each bundle is its own pip-installable package, such as <code>lfx-duckduckgo</code> or <code>lfx-arxiv</code>.</p>
|
||
<p>When you run <code>uv pip install langflow</code>, you install:</p>
|
||
<ul>
|
||
<li class="">All Langflow core components</li>
|
||
<li class="">All bundles that ship as dependencies of the <code>langflow</code> metapackage</li>
|
||
</ul>
|
||
<p>Some bundles that were previously included in <code>langflow</code> are moved into standalone packages.
|
||
The <code>langflow</code> metapackage adds them as regular pip dependencies, so <code>pip install langflow</code> continues to include them.</p>
|
||
<h2 class="anchor anchorTargetStickyNavbar_Vzrq" id="current-extension-bundles">Current Extension bundles<a href="#current-extension-bundles" class="hash-link" aria-label="Direct link to Current Extension bundles" title="Direct link to Current Extension bundles" translate="no"></a></h2>
|
||
<p>The following Extension bundles are included with <code>uv pip install langflow</code>:</p>
|
||
<table><thead><tr><th>Package</th><th>Bundle</th><th>Components</th></tr></thead><tbody><tr><td><code>lfx-arxiv</code></td><td><a class="" href="/bundles-arxiv">arXiv</a></td><td>arXiv search</td></tr><tr><td><code>lfx-docling</code></td><td><a class="" href="/bundles-docling">Docling</a></td><td>Document parsing and chunking</td></tr><tr><td><code>lfx-duckduckgo</code></td><td><a class="" href="/bundles-duckduckgo">DuckDuckGo</a></td><td>Web search</td></tr><tr><td><code>lfx-ibm</code></td><td><a class="" href="/bundles-ibm">IBM</a></td><td>IBM watsonx.ai LLM and embeddings, IBM Db2 Vector Store</td></tr></tbody></table>
|
||
<p>The internal identifier for each component changes.
|
||
For example, a DuckDuckGo component previously referenced as a <code>DuckDuckGoSearchComponent</code> class is now <code>ext:duckduckgo:DuckDuckGoSearchComponent@official</code>.
|
||
Langflow rewrites these references automatically when you open a saved flow, so in most cases the migration is invisible.</p>
|
||
<h2 class="anchor anchorTargetStickyNavbar_Vzrq" id="if-a-component-is-missing-after-an-upgrade">If a component is missing after an upgrade<a href="#if-a-component-is-missing-after-an-upgrade" class="hash-link" aria-label="Direct link to If a component is missing after an upgrade" title="Direct link to If a component is missing after an upgrade" translate="no"></a></h2>
|
||
<p>If you open a flow and a node shows an error like <code>component-not-found</code>, it means the automatic migration couldn't resolve the component reference.
|
||
This can happen when:</p>
|
||
<ul>
|
||
<li class="">The bundle the component came from was not installed in the upgraded environment.</li>
|
||
<li class="">The component was referenced by a name that appears in more than one bundle (<code>component-name-ambiguous</code>).</li>
|
||
</ul>
|
||
<p>In both cases the error message includes a hint that names the expected canonical ID. 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>component-not-found-with-hint: DuckDuckGoSearchComponent not found.</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>Hint: try ext:duckduckgo:DuckDuckGoSearchComponent@official</span></div></div><br></code></div></div>
|
||
<p>Use the bundle name from the hint, such as <code>duckduckgo</code> in this example, to find and install the correct extension package, and then reload the flow.</p>
|
||
<h2 class="anchor anchorTargetStickyNavbar_Vzrq" id="install-a-bundle-extension">Install a bundle extension<a href="#install-a-bundle-extension" class="hash-link" aria-label="Direct link to Install a bundle extension" title="Direct link to Install a bundle extension" translate="no"></a></h2>
|
||
<p>If a bundle you need is not included in your Langflow environment, install it with pip:</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>uv pip install lfx-duckduckgo</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>uv run langflow run</span></div></div><br></code></div></div>
|
||
<p>Langflow discovers the package at server startup and loads the components into the palette automatically.
|
||
No additional configuration is required.</p>
|
||
<p>To see what extensions are currently loaded, run:</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>lfx extension list</span></div></div><br></code></div></div>
|
||
<h2 class="anchor anchorTargetStickyNavbar_Vzrq" id="build-your-own-extension">Build your own extension<a href="#build-your-own-extension" class="hash-link" aria-label="Direct link to Build your own extension" title="Direct link to Build your own extension" translate="no"></a></h2>
|
||
<p>If you have custom components that you want to distribute and version independently of your Langflow install, you can package them as an extension.</p>
|
||
<p>For more information, see <a class="" href="/extensions-quickstart">Build your first Langflow Extension</a>.</p>
|
||
<h2 class="anchor anchorTargetStickyNavbar_Vzrq" id="see-also">See also<a href="#see-also" class="hash-link" aria-label="Direct link to See also" title="Direct link to See also" translate="no"></a></h2>
|
||
<ul>
|
||
<li class=""><a class="" href="/extensions-quickstart">Build your first extension</a></li>
|
||
<li class=""><a class="" href="/extensions-manifest">Manifest reference</a></li>
|
||
</ul></div></article><nav class="docusaurus-mt-lg pagination-nav" aria-label="Docs pages"><a class="pagination-nav__link pagination-nav__link--prev" href="/configuration-cli"><div class="pagination-nav__sublabel">Previous</div><div class="pagination-nav__label">Use the Langflow CLI</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/extensions-quickstart"><div class="pagination-nav__sublabel">Next</div><div class="pagination-nav__label">Langflow Extension quickstart</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 href="#current-extension-bundles" class="table-of-contents__link toc-highlight">Current Extension bundles</a></li><li><a href="#if-a-component-is-missing-after-an-upgrade" class="table-of-contents__link toc-highlight">If a component is missing after an upgrade</a></li><li><a href="#install-a-bundle-extension" class="table-of-contents__link toc-highlight">Install a bundle extension</a></li><li><a href="#build-your-own-extension" class="table-of-contents__link toc-highlight">Build your own extension</a></li><li><a href="#see-also" class="table-of-contents__link toc-highlight">See also</a></li></ul></div></div></div></div></main></div></div></div><footer class="theme-layout-footer footer"><div class="container container-fluid"><div class="row footer__links"><div class="theme-layout-footer-column col footer__col"><div class="footer__title"></div><ul class="footer__items clean-list"><li class="footer__item"><div class="footer-links">
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