Integrations - Docs by LangChain

LangSmith provides integrations for a growing set of popular LLM providers and agent frameworks as well as Deep Agents, LangChain, and LangGraph. For setup and usage, refer to the guides listed on this page.

LLM providers

OpenAI-compatible APIs

Using LangChain? LangChain provides a unified interface to 100+ LLM providers, which allows you to switch between models by setting environment variables. Initialize a model and LangSmith will automatically trace your application.

Agent frameworks

Claude Agent SDK

Microsoft Agent Framework

Semantic Kernel

Voice AI frameworks

OpenAI Realtime

Developer tools

VS Code Copilot

These coding agent integrations follow a shared metadata contract that standardizes the trace fields they emit.

Connect these docs to Claude, VSCode, and more via MCP for real-time answers.

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