header-test-mcp

matsjfunke/header-test-mcp

3.3

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header-test-mcp is an MCP Server designed to help debug custom header implementations in MCP Host/Client setups.

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Header Test MCP

header-test-mcp is an MCP Server which has one tool get-request-headers which returns all headers that were sent with the current request

Use this Server to debug your MCP Host / Client custom header implementation.

Getting Started

Prerequisites

Before you start with sample-mcp-server, ensure the following are installed:

  • Node.js (v18 or above recommended)
    Required to run the server and manage dependencies.
brew install node
  • PNPM (v10 or above recommended) The project uses PNPM as its package manager.
    Install globally with:
npm install -g pnpm

Setup

Install dependencies:

pnpm i

Start MCP Server on localhost:3333 :

pnpm dev

Install dependencies & start server in one command:

pnpm d

Server URL http://localhost:3333/mcp

Tunneling

If your host requires HTTPS you can easily tunnel the server via a service like ngrok:

ngrok http 3333