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MCP Test Client

by crazyrabbitLTC

Development/Testingtestingclienttooltypescript

A testing utility for Model Context Protocol (MCP) servers. This client helps you test MCP server implementations by providing a simple interface for making tool calls and validating responses.

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What is MCP Test Client?

MCP Test Client is a testing utility designed to simplify the process of testing Model Context Protocol (MCP) server implementations. It provides a straightforward interface for making tool calls and validating the responses received from the server.

How to use MCP Test Client?

To use the MCP Test Client, first install it using bun install mcp-test-client. Then, import the MCPTestClient class in your test file. Instantiate the client with the server command and arguments. Use the init() method to connect to the server. You can then use methods like listTools(), callTool(), and assertToolCall() to interact with the server and validate its behavior. Finally, use cleanup() to disconnect from the server.

Key features of MCP Test Client

  • Easy-to-use testing interface for MCP servers

  • Built-in support for tool listing and tool calls

  • Type-safe implementation using TypeScript

  • Assertion utilities for validating server responses

  • Mock calculator server implementation for examples

Use cases of MCP Test Client

  • Testing MCP server implementations

  • Validating server responses to tool calls

  • Developing and debugging MCP servers

  • Learning about MCP protocol

  • Creating integration tests for MCP-based applications

FAQ from MCP Test Client

What is MCP?

Model Context Protocol (MCP) is a protocol for communication between applications and models.

What is the purpose of MCP Test Client?

The MCP Test Client is designed to simplify the testing of MCP server implementations.

How do I install MCP Test Client?

You can install it using bun install mcp-test-client.

What are the prerequisites for using MCP Test Client?

You need to have Bun (v1.0.0 or higher) installed.

How do I contribute to MCP Test Client?

Fork the repository, create a feature branch, commit your changes, push to the branch, and open a pull request.