MCP Testing Servers: Simplify Testing, Validate Performance

Key Features of MCP Testing Servers

• Stateless Architecture: Auto-cleans sessions between requests to mirror production constraints in PHP hosting
• Protocol Visualization: Interactive debug interface decodes raw JSON-RPC traffic for easier troubleshooting
• Multi-Component Testing: Dedicated panels for evaluating prompt handling, tool execution, and resource allocation
• Security-first Design: Built-in warnings against direct public exposure, emphasizing pre-production hardening

Use Cases for MCP Testing Servers

Developers leverage this toolset to:

• Validate server response times under varying workloads
• Test edge cases involving complex prompt sequences
• Optimize tool execution through iterative performance profiling
• Evaluate resource utilization patterns before deployment
• Conduct security audits focusing on protocol message integrity

FAQ from MCP Testing Servers

Does this require specialized hosting?

No. The PHP implementation works on standard LAMP stacks, though persistent connections require additional configuration.

Can I test multiple servers simultaneously?

Yes. The interface allows configuring separate connection profiles for concurrent testing scenarios.

What about production readiness?

The debug interface should remain isolated from live environments. Use it for staging environments with proper rate limiting and authentication layers.

How does state handling work?

Each request establishes a fresh connection to match PHP's stateless execution model. Session persistence requires external storage solutions.

For licensing details, review the MIT License documentation.

Model Context Protocol (MCP) Testing Servers

This is a web-based application for testing MCP servers. It was designed to demonstrate a MCP client capable of running in a typical web hosting environment.

Installation

You can install the package via Composer:

composer create-project mcp/testing-server web-client

Using The Web Client

php server.php

To connect to the included MCP test server, enter php in the Command field and server.php in the Arguments field and click Connect to Server. The interface allows you to test Prompts, Tools, and Resources. There is also a Debug Panel allowing you to view the JSON-RPC messages being sent between the Client and Server.

Web Client Notes And Limitations

php -S 127.0.0.1:8989

This MCP Web Client is intended for developers to test MCP servers, and it is not recommended to be made publicly accessible as a web interface without additional testing for security, error handling, and resource management.

While MCP is usually implemented as a stateful session protocol, a typical PHP-based web hosting environment restricts long-running processes. To maximize compatibility, the MCP Web Client will initialize a new connection between the client and server for every request, and then close that connection after the request is complete.

License

The MIT License (MIT). Please see License File for more information.