Sample Cpp MCP Servers

@168iroha

Repository

Basic information

About Sample Cpp MCP Servers

C++によるMCP Serversのサンプル

Sample Cpp MCP Servers 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

Sample Cpp MCP Servers 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 sample-cpp-mcp-servers?

A sample implementation of MCP (Model Context Protocol) servers written in C++. It demonstrates the basic protocol flow using standard I/O and is intended as an educational example based on a blog article. It is not production-ready and will be removed in a few months.

How to use sample-cpp-mcp-servers?

Build and run the executable. The server communicates over standard I/O (stdin/stdout) using the MCP protocol. It listens for initialization and tool calls, and logs diagnostic messages to stderr.

Key features of sample-cpp-mcp-servers

Written in C++ using the MCP protocol
Single tool: evaluate-scores for score evaluation
Transports via standard I/O (stdio)
Logs timestamps and events to stderr
Implements only procedure calls (protocol experimentation)

Use cases of sample-cpp-mcp-servers

Learning how MCP servers work in C++
Experimenting with tool calling over stdio
Reference for implementing custom MCP servers

Frequently asked questions

What language and libraries are used?

The server is written in C++ and uses an internal `mcp-server.hpp` library along with nlohmann/json for JSON handling (as seen in the source code).

How does the server communicate?

It uses standard I/O (binary mode on Windows) for MCP messages. All diagnostic output goes to stderr.

What tool does the server provide?

A single tool named `evaluate-scores` that accepts a numeric score (minimum 0) and returns a formatted evaluation (beginner, intermediate, or advanced).

Is this server intended for production use?

No. It is a sample for learning purposes, and the repository will be deleted after the source code is published on the author’s blog.

What are the runtime requirements?

A C++ compiler supporting `<chrono>`, `<format>`, and the MCP library provided in the repository. Only stdio transport is confirmed to work.

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