MCP Test Client
by willccbb
The MCP Test Client is a middleware that acts as both a server (to Claude) and a client (to servers under test). It's designed for testing MCP servers during development without direct registration with Claude.
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What is MCP Test Client?
The MCP Test Client is a dual-role middleware that allows developers to test MCP servers in a controlled environment. It simulates the interaction between Claude and MCP servers, enabling thorough testing before formal registration.
How to use MCP Test Client?
The MCP Test Client can be used both as an MCP server registered with Claude and as a CLI tool. As a server, it exposes tools for deploying, calling tools on, running tests against, viewing logs of, listing, and stopping MCP servers. As a CLI tool, it provides an interactive menu for managing MCP servers.
Key features of MCP Test Client
Deploy MCP servers to test environments
Call individual tools with custom arguments
Run automated test suites
View server logs
Use cases of MCP Test Client
Testing MCP server functionality during development
Debugging MCP server issues in a controlled environment
Validating MCP server responses before registration with Claude
Automating MCP server testing with test suites
FAQ from MCP Test Client
What is the MCP Test Client?
What is the MCP Test Client?
It's a middleware for testing MCP servers.
How does it work?
How does it work?
It acts as both a server to Claude and a client to the MCP server under test.
What are its main features?
What are its main features?
Deploying servers, calling tools, running tests, and viewing logs.
How do I install it?
How do I install it?
Use npm install and npm run build.
How do I run it?
How do I run it?
Use npm run test or node dist/test-runner.js for the CLI, or register it with Claude using claude-mcp-local.