MCP Tools Usage From LangChain / Example in TypeScript

What is the Simple MCP Client?

The Simple MCP Client is a straightforward implementation of a Model Context Protocol (MCP) client using LangChain and TypeScript, designed to demonstrate the use of MCP server tools.

How to use the Simple MCP Client?

To use the Simple MCP Client, follow these steps:

1. Install the necessary dependencies using npm install.
2. Set up your API key by copying the .env.template to .env and updating it with your credentials.
3. Run the application with npm start.

Key features of the Simple MCP Client?

• Utilizes LangChain to interact with MCP servers.
• Supports parallel initialization of multiple MCP servers.
• Converts MCP tools into LangChain-compatible tools for easy integration.
• Includes support for both Anthropic's and OpenAI's language models.

Use cases of the Simple MCP Client?

1. Building applications that require interaction with multiple language models.
2. Developing tools that leverage the Model Context Protocol for enhanced functionality.
3. Creating conversational agents that utilize LangChain's capabilities.

FAQ from the Simple MCP Client?

• What are the prerequisites for using the Simple MCP Client?

You need Node.js 16+, npm 7+, and an API key from either Anthropic or OpenAI.

• Is there a Python equivalent of this client?

Yes, a Python version is available at this link.

• Can I run this client without an API key?

No, an API key is required to access the language models.