> ## Documentation Index
> Fetch the complete documentation index at: https://docs.langchain.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Reference

> Reference for the LangSmith Deployment SDKs, CLI, and APIs for deploying and interacting with agents.

This section is a reference for the SDKs, CLI, and APIs you use to deploy and interact with agents on the [Agent Server](/langsmith/agent-server) runtime.

## SDKs and CLI

<CardGroup cols={2}>
  <Card title="LangGraph Python SDK" icon="brand-python" href="/langsmith/langgraph-python-sdk">
    Client library for Python applications to call deployed agents.
  </Card>

  <Card title="LangGraph JS/TS SDK" icon="brand-javascript" href="/langsmith/langgraph-js-ts-sdk">
    Client library for JavaScript and TypeScript applications to call deployed agents.
  </Card>

  <Card title="LangSmith Deployments SDK" icon="package" href="/langsmith/smith-deployments-sdk">
    Programmatic management of LangSmith deployments and revisions.
  </Card>

  <Card title="LangGraph CLI" icon="terminal" href="/langsmith/cli">
    Build, deploy, and interact with agents from the command line.
  </Card>

  <Card title="RemoteGraph" icon="git-merge" href="/langsmith/remote-graph">
    Client-side interface for calling deployed graphs as if they were local.
  </Card>
</CardGroup>

## APIs

<CardGroup cols={2}>
  <Card title="Agent Server API" icon="server" href="/langsmith/server-api-ref">
    REST endpoints exposed by the Agent Server runtime: assistants, threads, runs, cron jobs, and the long-term memory store.
  </Card>

  <Card title="Control Plane API" icon="settings" href="/langsmith/api-ref-control-plane">
    REST endpoints for managing deployments, revisions, and listeners.
  </Card>

  <Card title="Managed Deep Agents API" icon="robot" href="/langsmith/managed-deep-agents-api-overview">
    Private preview API for creating, running, and operating Managed Deep Agents.
  </Card>
</CardGroup>

## Releases

<CardGroup cols={1}>
  <Card title="Agent Server changelog" icon="versions" href="/langsmith/agent-server-changelog">
    Version history and release notes for the Agent Server runtime.
  </Card>
</CardGroup>

***

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