LangChain MCP Adapters - Connect MCP servers with LangChain applications.
This package provides adapters to connect MCP (Model Context Protocol) servers with LangChain applications, converting MCP tools, prompts, and resources into LangChain-compatible formats.
Interceptor interfaces and types for MCP client tool call lifecycle management.
This module provides an interceptor interface for wrapping and controlling MCP tool call execution with a handler callback pattern.
In the future, we might add more interceptors for other parts of the request / result lifecycle, for example to support elicitation.
Session management for different MCP transport types.
This module provides connection configurations and session management for various MCP transport types including stdio, SSE, WebSocket, and streamable HTTP.
Prompts adapter for converting MCP prompts to LangChain messages.
This module provides functionality to convert MCP prompt messages into LangChain message objects, handling both user and assistant message types.
Client for connecting to multiple MCP servers and loading LC tools/resources.
This module provides the MultiServerMCPClient class for managing connections
to multiple MCP servers and loading tools, prompts, and resources from them.
Types for callbacks.
Resources adapter for converting MCP resources to LangChain Blob objects.
This module provides functionality to convert MCP resources into LangChain Blob objects, handling both text and binary resource content types.
Tools adapter for converting MCP tools to LangChain tools.
This module provides functionality to convert MCP tools into LangChain-compatible tools, handle tool execution, and manage tool conversion between the two formats.
