TinyMCP

What is TinyMCP?

TinyMCP is a lightweight C++ SDK for implementing the MCP Server.

What is MCP?

MCP is an open protocol that standardizes how applications provide context to LLMs. Think of MCP like a USB-C port for AI applications. Just as USB-C provides a standardized way to connect your devices to various peripherals and accessories, MCP provides a standardized way to connect AI models to different data sources and tools.

Reference for details

TinyMCP supported system platforms

Windows
Linux
MacOS
Android
Other platforms that support standart c++...

Usage Guide

Please check the wiki for more information.

Dependencies

jsoncpp 1.9.5

MCP protocol version

MCP Specification 2024-11-05

Code structure brief

directory	brief
Public	SDK public directory, used to store global type definitions, global constant resources, helper classes, etc.
Message	Definition and implementation of the basic data structures of the MCP protocol, mainly including the implementation of protocol data such as standard requests, responses, and notifications that follow the JSON-RPC 2.0 protocol.
Session	Definition and implementation of MCP protocol interaction sessions, mainly including the implementation of stateful sessions based on the C/S architecture and the maintenance of the complete MCP session lifecycle (initialization phase, running phase, and closing phase).
Transport	Definition of data transmission channels between various endpoints based on the C/S architecture, which also includes an implementation of a default stdio transmission channel.
Task	Definition and implementation of various MCP tasks, such as the three - way handshake and capability negotiation task during the initialization phase, and the processing tasks for major requests like Prompts (not yet implemented), Resources (not yet implemented), Tools (already implemented), etc. Time - consuming tasks are executed asynchronously, while ordinary tasks are executed synchronously.
Entity	Definition of various protocol entity classes for MCP, mainly including the base class of the Server following the Singleton pattern.

Feature support brief

Although not all MCP features have been implemented yet, it is already sufficient for the Tools-type MCP Server.

Feature	Remarks	Supported or not
Base Protocol	Core JSON-RPC message types	Yes
Lifecycle Management	Connection initialization, capability negotiation, and session control	Yes
Transports	stdio	Yes
Cancellation	Cancellation of in-progress requests through notification messages.	Yes
Progress	Progress tracking for long-running operations through notification messages.	Yes
Tools	Tools enable models to interact with external systems, such as querying databases, calling APIs, or performing computations.	Yes
Pagination	Pagination allows servers to yield results in smaller chunks rather than all at once.	Yes
Transports	HTTP with Server-Sent Events (SSE)	Not yet
Ping	Ping mechanism that allows either party to verify that their counterpart is still responsive and the connection is alive.	Not yet
Resources	Resources allow servers to share data that provides context to language models, such as files, database schemas, or application-specific information.	Not yet
Prompts	Prompts allow servers to provide structured messages and instructions for interacting with language models.	Not yet
Completion	A standardized way for servers to offer argument autocompletion suggestions for prompts and resource URIs.	Not yet
Logging	A standardized way for servers to send structured log messages to clients.	Not yet

LICENSE

TinyMCP is licensed under the MIT License - see the LICENSE file for details.

License

Qihoo360/TinyMCP

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