Can I customize or extend this example?

Yes, you can extend it by adding more JSON-RPC methods to the server, implementing additional error handling and logging, or experimenting with different transport protocols.

What prerequisites are needed to run this example?

You need to have Node.js (version 10 or later) installed on your system. No other external dependencies are required.

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JSON MCP Server

Demonstrates a basic JSON-RPC client and server implementation using Node.js.

Local serverstdio★ 3

What is the JSON MCP Server?

Demonstrates a basic JSON-RPC client and server implementation using Node.js.

What it actually does

This repository contains a simple, beginner-friendly example of an MCP-inspired JSON‑RPC client and server implemented in JavaScript. The project demonstrates a basic communication flow using Node.js's built‑in modules without any external dependencies.

Configuration

Node.js installed on your system (v10 or later is recommended).

More MCP options

Compare MCP servers by category, or browse hosted MCP servers if you prefer an endpoint over a local process.

Maintainer setup documentation.

Recorded tools

Check the linked publisher documentation and your connected client's tool list. Names and availability can vary with the server version and account permissions.

Tool	What it does
initialize	Returns a basic capabilities object (advertising an "echo" tool).
echo	Echoes back the parameters provided by the client.
server.js	The JSON‑RPC server implementation.
client.js	The JSON‑RPC client implementation.

Configuration

Node.js installed on your system (v10 or later is recommended).

Example prompts to try

“Use JSON to initialize.”
“Use JSON to echo.”
“Use JSON to server.js.”

Frequently asked questions

This example includes a server with 'initialize' and 'echo' methods, a client for sending requests, and uses Node.js built-in modules. It's designed to be beginner-friendly.