hkr04/cpp-mcp

What it solves

This project provides a C++ implementation of the Model Context Protocol (MCP), a standardized way for AI models and agents to interact with external resources, tools, and services. It allows developers to build MCP-compliant servers and clients in C++, enabling AI agents to access files, APIs, and custom tools using a consistent interface.

How it works

The framework implements the MCP protocol using JSON-RPC 2.0 for communication. It provides a set of abstract interfaces and concrete implementations for both clients and servers. It supports two primary transport methods: HTTP with Server-Sent Events (SSE) and standard input/output (stdio), the latter being the default for many AI desktop clients.

Who it’s for

C++ developers who want to integrate AI agents with external data and tools or build high-performance MCP servers and clients that conform to the same standards as the broader MCP ecosystem.

Highlights

• Multi-Transport Support: Supports both HTTP/SSE and stdio for flexible communication.
• Tool and Resource Management: Built-in capabilities to register and invoke tools with structured parameters and manage resources like files and APIs.
• Prompt Templates: Ability to register and expose prompt templates to AI clients for structured workflows.
• SSL/TLS Support: Includes support for secure communication via HTTPS.
• JSON-RPC 2.0: Adheres to the standard for request/response communication.