Express MCP Server

@jhgaylor

Repository

Basic information

About Express MCP Server

An MCP server providing tools to extract text from things

#express-mcp#text-extractor#mcp-server

Express MCP Server config

No standard config provided

This server doesn't expose a parseable MCP config block in its README. See the repository for install instructions.

Repository

Express MCP Server tools

Tool list not available yet

This listing does not currently have a tool list to display. This does not mean the server has no tools; check its documentation for supported capabilities.

We auto-extract tools from the README. The maintainer can list them under a ## Tools heading to populate this section.

Overview

What is Express MCP Server?

Express MCP Server is a stateless Model Context Protocol (MCP) server built with Express and TypeScript. It implements a simple echo endpoint with a resource, tool, and prompt, using modern Streamable HTTP transport for LLMs to interact with external data.

How to use Express MCP Server?

Clone the repository, install dependencies with npm install, build TypeScript with npm run build, and run in development mode with npm run dev. The server exposes a POST /mcp endpoint that accepts JSON-RPC requests. Use curl to send initialize and tools/call commands as shown in the README.

Key features of Express MCP Server

Stateless MCP server with Streamable HTTP transport
TypeScript for type safety
Express.js for HTTP handling
Three echo components: resource, tool, and prompt
Simple JSON-RPC endpoint for LLM interaction

Use cases of Express MCP Server

Testing MCP protocol implementations in a controlled environment
Building a lightweight mock MCP server for development
Providing a quick echo service for LLM tool demonstrations
Prototyping MCP resource, tool, and prompt integration

Frequently asked questions

What runtime and package manager are required?

Node.js 18+ and either npm or yarn.

How do I interact with the server?

Send a POST request to `/mcp` with a JSON-RPC payload, as shown in the curl examples for initialize and tools/call.

What MCP components does the server provide?

A resource at `echo://{message}`, a tool called `echo`, and a prompt called `echo` – all echo the provided message back.

What transport does the server use?

It uses the Streamable HTTP transport for Model Context Protocol.

Is the server stateful or stateless?

It is stateless; each request is handled independently without persistent session state.

Comments

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