> ## Documentation Index
> Fetch the complete documentation index at: https://langchain-5e9cc07a-preview-openap-1765292790-ae6c60d.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# LangSmith reference

The following sections provide API references and SDK documentation for LangSmith:

<Columns cols={3}>
  <Card title="Python SDK" icon="python" href="/langsmith/smith-python-sdk" arrow="true">
    Reference documentation for the LangSmith Python SDK.
  </Card>

  <Card title="JavaScript/TypeScript SDK" icon="js" href="/langsmith/smith-js-ts-sdk" arrow="true">
    Reference documentation for the LangSmith JavaScript/TypeScript SDK.
  </Card>

  <Card title="LangGraph Python SDK" icon="diagram-project" href="/langsmith/langgraph-python-sdk" arrow="true">
    Reference documentation for deploying LangGraph applications with Python.
  </Card>

  <Card title="LangGraph JS/TS SDK" icon="diagram-project" href="/langsmith/langgraph-js-ts-sdk" arrow="true">
    Reference documentation for deploying LangGraph applications with JavaScript/TypeScript.
  </Card>

  <Card title="LangSmith API" icon="code" href="/langsmith/smith-api-ref" arrow="true">
    Complete REST API reference for LangSmith platform features.
  </Card>

  <Card title="Deployment APIs" icon="server" href="/langsmith/server-api-ref" arrow="true">
    API references for self-hosted and hybrid LangSmith deployments.
  </Card>
</Columns>

***

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