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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">Integrations</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">LangSmith</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>LangSmith</h1></header><p>LangSmith is a full-lifecycle DevOps service from LangChain that provides monitoring and observability. To integrate with Langflow, just add your LangChain API key as a Langflow environment variable and you are good to go!</p>
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<h2 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="b912579a43984f9a92921232b67c885d">Step-by-step Configuration<a class="hash-link" aria-label="Direct link to Step-by-step Configuration" title="Direct link to Step-by-step Configuration" href="/integrations-langsmith#b912579a43984f9a92921232b67c885d"></a></h2>
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<hr>
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<ol>
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<li>Obtain your LangChain API key from <a href="https://smith.langchain.com/" target="_blank" rel="noopener noreferrer">https://smith.langchain.com</a></li>
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<li>Add the following keys to Langflow .env file:</li>
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</ol>
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<p><code>LANGCHAIN_API_KEY="your-api-key"LANGCHAIN_PROJECT="your-project-name"</code></p>
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<p>or export the environment variables in your terminal:</p>
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<p><code>export LANGCHAIN_API_KEY="your-api-key"export LANGCHAIN_PROJECT="your-project-name"</code></p>
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<ol>
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<li>Restart Langflow using <code>langflow run --env-file .env</code></li>
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<li>Run any project and check the LangSmith dashboard for monitoring and observability.</li>
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</ol>
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<p><img decoding="async" loading="lazy" src="/assets/images/1641825585-ce13945c95550300648084dda81408fd.png" width="3136" height="1762" 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="/configuration-auto-save"><div class="pagination-nav__sublabel">Previous</div><div class="pagination-nav__label">Auto-saving</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/integrations-langwatch"><div class="pagination-nav__sublabel">Next</div><div class="pagination-nav__label">LangWatch</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="/integrations-langsmith#b912579a43984f9a92921232b67c885d">Step-by-step Configuration</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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