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mcp_kit.adapters.langgraph

LangGraph adapter for MCP targets.

LangGraphMultiServerMCPClient​

class LangGraphMultiServerMCPClient()

Adapter class for LangGraph compatibility with MCP targets.

This adapter provides an interface similar to MultiServerMCPClient from langchain-mcp-adapters, allowing MCP targets to be used with LangGraph workflows.

__init__​

def __init__(target: Target)

Initialize the LangGraph MCP client adapter.

Arguments:

  • target: The MCP target to adapt for LangGraph use

Raises:

  • ImportError: If langchain_mcp_adapters is not installed

session​

@asynccontextmanager
async def session(server_name: str,
                  *,
                  auto_initialize: bool = True) -> AsyncIterator[Any]

Create a new client session for the specified server.

Arguments:

  • server_name: Name of the server to connect to
  • auto_initialize: Whether to automatically initialize the target

Raises:

  • ValueError: If the server name doesn't match the target name

Returns:

ClientSessionAdapter for the target

get_tools​

async def get_tools(*, server_name: str | None = None) -> list[BaseTool]

Get LangChain tools from the MCP server.

Converts MCP tools to LangChain-compatible tools using the langchain_mcp_adapters.

Arguments:

  • server_name: Optional server name to validate against

Raises:

  • ValueError: If the server name doesn't match the target name

Returns:

List of LangChain tools