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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="theme-doc-version-banner alert alert--warning margin-bottom--md" role="alert"><div>This is unreleased documentation for <!-- -->Langflow Documentation<!-- --> <b>1.11.x (Next)</b> version.</div><div class="margin-top--md">For up-to-date documentation, see the <b><a href="/integrations-openlayer">latest version</a></b> (<!-- -->1.10.x<!-- -->).</div></div><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">Observability</span></li><li class="breadcrumbs__item"><span class="breadcrumbs__link">Monitoring</span></li><li class="breadcrumbs__item breadcrumbs__item--active"><span class="breadcrumbs__link">Openlayer</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: 1.11.x (Next)</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>Openlayer</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><a href="https://www.openlayer.com/" target="_blank" rel="noopener noreferrer" class="">Openlayer</a> is a testing and evaluation platform for LLM applications. It provides comprehensive observability, testing, and monitoring capabilities to help you ship high-quality AI systems with confidence.</p>
|
||
<p>You can configure Langflow to collect tracing data about your flow executions and automatically send the data to Openlayer for analysis, monitoring, and evaluation.</p>
|
||
<h2 class="anchor anchorTargetStickyNavbar_Vzrq" id="prerequisites">Prerequisites<a href="#prerequisites" class="hash-link" aria-label="Direct link to Prerequisites" title="Direct link to Prerequisites" translate="no"></a></h2>
|
||
<ul>
|
||
<li class="">An <a href="https://www.openlayer.com/" target="_blank" rel="noopener noreferrer" class="">Openlayer account</a></li>
|
||
<li class="">A <a class="" href="/get-started-installation">running Langflow server</a> with a <a class="" href="/concepts-flows">flow</a> that you want to trace</li>
|
||
<li class="">An Openlayer inference pipeline</li>
|
||
</ul>
|
||
<div class="theme-admonition theme-admonition-tip admonition_xJq3 alert alert--success"><div class="admonitionHeading_Gvgb"><span class="admonitionIcon_Rf37"><svg viewBox="0 0 12 16" role="img" aria-label="Tip icon" focusable="false"><path fill-rule="evenodd" d="M6.5 0C3.48 0 1 2.19 1 5c0 .92.55 2.25 1 3 1.34 2.25 1.78 2.78 2 4v1h5v-1c.22-1.22.66-1.75 2-4 .45-.75 1-2.08 1-3 0-2.81-2.48-5-5.5-5zm3.64 7.48c-.25.44-.47.8-.67 1.11-.86 1.41-1.25 2.06-1.45 3.23-.02.05-.02.11-.02.17H5c0-.06 0-.13-.02-.17-.2-1.17-.59-1.83-1.45-3.23-.2-.31-.42-.67-.67-1.11C2.44 6.78 2 5.65 2 5c0-2.2 2.02-4 4.5-4 1.22 0 2.36.42 3.22 1.19C10.55 2.94 11 3.94 11 5c0 .66-.44 1.78-.86 2.48zM4 14h5c-.23 1.14-1.3 2-2.5 2s-2.27-.86-2.5-2z"></path></svg></span>tip</div><div class="admonitionContent_BuS1"><p>If you need a flow to test the Openlayer integration, see the <a class="" href="/get-started-quickstart">Langflow quickstart</a>.</p></div></div>
|
||
<h2 class="anchor anchorTargetStickyNavbar_Vzrq" id="set-openlayer-credentials-as-environment-variables">Set Openlayer credentials as environment variables<a href="#set-openlayer-credentials-as-environment-variables" class="hash-link" aria-label="Direct link to Set Openlayer credentials as environment variables" title="Direct link to Set Openlayer credentials as environment variables" translate="no"></a></h2>
|
||
<ol>
|
||
<li class="">
|
||
<p>Get your <a href="https://app.openlayer.com/settings/api-keys" target="_blank" rel="noopener noreferrer" class="">Openlayer API key</a> from your Openlayer account.</p>
|
||
</li>
|
||
<li class="">
|
||
<p>Create an inference pipeline in Openlayer and copy the pipeline ID.</p>
|
||
</li>
|
||
<li class="">
|
||
<p>Set your Openlayer credentials as environment variables in the same environment where you run Langflow.</p>
|
||
<p>In the following examples, replace <code>YOUR_API_KEY</code> and <code>YOUR_PIPELINE_ID</code> with your actual Openlayer credentials.</p>
|
||
<div class="theme-tabs-container tabs-container tabList__CuJ"><ul role="tablist" aria-orientation="horizontal" class="tabs"><li role="tab" tabindex="0" aria-selected="true" class="tabs__item tabItem_LNqP tabs__item--active">Linux or macOS</li><li role="tab" tabindex="-1" aria-selected="false" class="tabs__item tabItem_LNqP">Windows</li></ul><div class="margin-top--md"><div role="tabpanel" class="tabItem_Ymn6"><p>These commands set the environment variables in a Linux or macOS terminal session:</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 OPENLAYER_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>export OPENLAYER_INFERENCE_PIPELINE_ID="YOUR_PIPELINE_ID"</span></div></div><br></code></div></div></div><div role="tabpanel" class="tabItem_Ymn6" hidden=""><p>These commands set the environment variables in a Windows command prompt session:</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>set OPENLAYER_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>set OPENLAYER_INFERENCE_PIPELINE_ID=YOUR_PIPELINE_ID</span></div></div><br></code></div></div></div></div></div>
|
||
</li>
|
||
</ol>
|
||
<h2 class="anchor anchorTargetStickyNavbar_Vzrq" id="start-langflow-and-view-traces-in-openlayer">Start Langflow and view traces in Openlayer<a href="#start-langflow-and-view-traces-in-openlayer" class="hash-link" aria-label="Direct link to Start Langflow and view traces in Openlayer" title="Direct link to Start Langflow and view traces in Openlayer" translate="no"></a></h2>
|
||
<ol>
|
||
<li class="">
|
||
<p>Start Langflow in the same environment where you set the Openlayer environment variables:</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 run langflow run</span></div></div><br></code></div></div>
|
||
</li>
|
||
<li class="">
|
||
<p>Run a flow in Langflow.</p>
|
||
<p>Langflow automatically collects and sends tracing data about the flow execution to Openlayer, including:</p>
|
||
<ul>
|
||
<li class="">Component inputs and outputs</li>
|
||
<li class="">Execution timing and latency</li>
|
||
<li class="">LLM calls and nested operations</li>
|
||
<li class="">User and session context</li>
|
||
</ul>
|
||
</li>
|
||
<li class="">
|
||
<p>View the collected data in your <a href="https://app.openlayer.com/" target="_blank" rel="noopener noreferrer" class="">Openlayer dashboard</a>.</p>
|
||
<p>Each flow execution appears as a trace with a hierarchical view of all components and their nested operations.</p>
|
||
</li>
|
||
</ol>
|
||
<h2 class="anchor anchorTargetStickyNavbar_Vzrq" id="advanced-configuration">Advanced configuration<a href="#advanced-configuration" class="hash-link" aria-label="Direct link to Advanced configuration" title="Direct link to Advanced configuration" translate="no"></a></h2>
|
||
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id="flow-specific-pipelines">Flow-specific pipelines<a href="#flow-specific-pipelines" class="hash-link" aria-label="Direct link to Flow-specific pipelines" title="Direct link to Flow-specific pipelines" translate="no"></a></h3>
|
||
<p>You can configure different Openlayer inference pipelines for different flows using flow-specific environment variables:</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 OPENLAYER_PIPELINE_MY_FLOW_NAME="pipeline-id-1"</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>export OPENLAYER_PIPELINE_ANOTHER_FLOW="pipeline-id-2"</span></div></div><br></code></div></div>
|
||
<p>The flow name is converted to uppercase and non-alphanumeric characters are replaced with underscores. For example, "My Flow-Name" becomes <code>OPENLAYER_PIPELINE_MY_FLOW_NAME</code>.</p>
|
||
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id="json-mapping">JSON mapping<a href="#json-mapping" class="hash-link" aria-label="Direct link to JSON mapping" title="Direct link to JSON mapping" translate="no"></a></h3>
|
||
<p>Alternatively, you can use a JSON mapping to configure multiple flows at once:</p>
|
||
<div class="theme-tabs-container tabs-container tabList__CuJ"><ul role="tablist" aria-orientation="horizontal" class="tabs"><li role="tab" tabindex="0" aria-selected="true" class="tabs__item tabItem_LNqP tabs__item--active">Linux or macOS</li><li role="tab" tabindex="-1" aria-selected="false" class="tabs__item tabItem_LNqP">Windows</li></ul><div class="margin-top--md"><div role="tabpanel" class="tabItem_Ymn6"><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 OPENLAYER_LANGFLOW_MAPPING='{"Flow Name 1":"pipeline-id-1","Flow Name 2":"pipeline-id-2"}'</span></div></div><br></code></div></div></div><div role="tabpanel" class="tabItem_Ymn6" hidden=""><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>set OPENLAYER_LANGFLOW_MAPPING={"Flow Name 1":"pipeline-id-1","Flow Name 2":"pipeline-id-2"}</span></div></div><br></code></div></div></div></div></div>
|
||
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id="configuration-priority">Configuration priority<a href="#configuration-priority" class="hash-link" aria-label="Direct link to Configuration priority" title="Direct link to Configuration priority" translate="no"></a></h3>
|
||
<p>Openlayer configuration is resolved in the following order (highest priority first):</p>
|
||
<ol>
|
||
<li class="">Flow-specific environment variable: <code>OPENLAYER_PIPELINE_<FLOW_NAME></code></li>
|
||
<li class="">JSON mapping: <code>OPENLAYER_LANGFLOW_MAPPING</code></li>
|
||
<li class="">Default environment variable: <code>OPENLAYER_INFERENCE_PIPELINE_ID</code></li>
|
||
</ol>
|
||
<p>This allows you to set a default pipeline for all flows and override it for specific flows as needed.</p>
|
||
<h2 class="anchor anchorTargetStickyNavbar_Vzrq" id="disable-openlayer-tracing">Disable Openlayer tracing<a href="#disable-openlayer-tracing" class="hash-link" aria-label="Direct link to Disable Openlayer tracing" title="Direct link to Disable Openlayer tracing" translate="no"></a></h2>
|
||
<p>To disable the Openlayer integration, remove the <code>OPENLAYER_API_KEY</code> environment variable, and then restart Langflow.</p>
|
||
<h2 class="anchor anchorTargetStickyNavbar_Vzrq" id="features">Features<a href="#features" class="hash-link" aria-label="Direct link to Features" title="Direct link to Features" translate="no"></a></h2>
|
||
<p>The Openlayer integration automatically captures:</p>
|
||
<ul>
|
||
<li class=""><strong>Component hierarchy</strong>: All flow components with parent-child relationships</li>
|
||
<li class=""><strong>LangChain callbacks</strong>: Nested LLM calls and tool executions appear within their parent components</li>
|
||
<li class=""><strong>Timing metrics</strong>: Start time, end time, and latency for each component</li>
|
||
<li class=""><strong>Inputs and outputs</strong>: Component inputs and outputs with automatic type conversion</li>
|
||
<li class=""><strong>User context</strong>: User ID and session ID propagation for better analytics</li>
|
||
<li class=""><strong>Error tracking</strong>: Errors and logs captured in component metadata</li>
|
||
</ul>
|
||
<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 href="https://docs.openlayer.com/" target="_blank" rel="noopener noreferrer" class="">Openlayer documentation</a></li>
|
||
<li class=""><a href="https://github.com/openlayer-ai/openlayer-python" target="_blank" rel="noopener noreferrer" class="">Openlayer GitHub repository</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="/next/integrations-langwatch"><div class="pagination-nav__sublabel">Previous</div><div class="pagination-nav__label">LangWatch</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/next/integrations-opik"><div class="pagination-nav__sublabel">Next</div><div class="pagination-nav__label">Opik</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="#prerequisites" class="table-of-contents__link toc-highlight">Prerequisites</a></li><li><a href="#set-openlayer-credentials-as-environment-variables" class="table-of-contents__link toc-highlight">Set Openlayer credentials as environment variables</a></li><li><a href="#start-langflow-and-view-traces-in-openlayer" class="table-of-contents__link toc-highlight">Start Langflow and view traces in Openlayer</a></li><li><a href="#advanced-configuration" class="table-of-contents__link toc-highlight">Advanced configuration</a><ul><li><a href="#flow-specific-pipelines" class="table-of-contents__link toc-highlight">Flow-specific pipelines</a></li><li><a href="#json-mapping" class="table-of-contents__link toc-highlight">JSON mapping</a></li><li><a href="#configuration-priority" class="table-of-contents__link toc-highlight">Configuration priority</a></li></ul></li><li><a href="#disable-openlayer-tracing" class="table-of-contents__link toc-highlight">Disable Openlayer tracing</a></li><li><a href="#features" class="table-of-contents__link toc-highlight">Features</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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