About MCP Server Tester
MCP Server Tester is a web application for developers testing MCP servers and their responses. It accepts MCP config JSON, forwards requests through a local Node.js backend, and displays the results.
Key features
- 01Paste MCP config JSON
- 02Forward requests through a local Node.js backend
- 03View responses in the web interface
Use cases
- 01Manually test an MCP server endpoint
- 02Review results returned by an MCP server
MCP support
The application forwards requests to MCP server endpoints and displays the results in its web interface.
Configuration
Local server config is the same for every client. Copy it into your client’s MCP config file.
We haven’t collected a package or remote endpoint for this server. Follow the instructions in the project README.
Tools
Local servers expose tools only once running on your machine, and the maintainer has not provided a tool list.
Details
From the project READMEMCP Server Tester
This is a simple web application that allows you to test MCP (Model Context Protocol) servers like those hosted on smithery.ai.
🌐 Live Demo
💻 How It Works
- You paste an MCP config JSON into the textarea.
- The frontend sends the request to a local Node.js backend.
- The backend forwards the request to the MCP server endpoint and returns the result.
- The frontend displays the result clearly.
🛠️ Technologies Used
- HTML, CSS, JavaScript (Frontend)
- Node.js, Express, Axios (Backend)
⚙️ Setup Instructions (Local)
- Clone the repo:
git clone https://github.com/YOUR_USERNAME/YOUR_REPO_NAME.git cd YOUR_REPO_NAME
Comments
New to MCP?
From what the protocol is to installing your first server, these answers cover most first questions.
An open protocol that defines how AI applications connect to external tools and data in a uniform way. Clients talk to the model; MCP servers provide tools, resources and prompt templates. They exchange standard messages, so one server can be reused by many clients.