ReAct Agent FAQs

Question 1

What is the ReAct Agent?

Accepted Answer

The ReAct Agent is a system built with LangGraph that allows AI agents to access and use various tools and capabilities provided by Model Context Protocol (MCP) servers through a unified interface.

Question 2

What is LangGraph and how is it used in ReAct Agent?

Accepted Answer

LangGraph is a library for building LLM-powered applications as graphs. ReAct Agent uses LangGraph to define the agent's reasoning process and how it interacts with different tools.

Question 3

How can I add more capabilities to the ReAct Agent?

Accepted Answer

You can add more capabilities by including additional MCP servers. Configure the gateway to connect to servers from the [MCP servers repository](https://github.com/modelcontextprotocol/servers), and the agent will automatically discover the new tools.

Question 4

What types of tools are included with the ReAct Agent?

Accepted Answer

Out of the box, the ReAct Agent provides File System tools (read, write, list, search) and Memory tools (knowledge graph operations, entities, relations, queries).  It can be extended with more MCP servers.

Question 5

What are MCP servers and how does the ReAct agent use them?

Accepted Answer

MCP servers provide specific capabilities (e.g., file system access, knowledge graph operations). The ReAct Agent connects to an MCP gateway, discovers available tools from these servers, and uses them to complete tasks.

ReAct Agent

ReAct Agent

Key Features

Use Cases

Key Features

Use Cases