MCPC 是 MCP（模型-上下文-协议）的扩展，解决了 LLM 工具交互中的一个关键限制：在运行工具后台任务时实现持续对话。它通过已有的 MCP 传输促进了 LLM 与工具之间的异步双向通信——无需额外传输层，同时保持完全向后兼容。

什么是MCPC？

MCPC 是 MCP 协议的扩展，而非替代品。它基于现有 MCP 基础设施，增加了实时双向通信能力，同时保持与标准 MCP 实现的完全兼容性。

MCPC 解决了大型语言模型工具交互中的一个关键限制：在运行后台任务时实现连续双向通信：

• LLM与使用同一MCP传输工具之间的双向通信
• 在工具执行过程中与大型语言模型的持续对话
• 来自后台进程的实时更新
• 操作完成时的异步通知
• 支持无限期运行任务并同步流式更新

兼容性矩阵

特色

|专题 |状态 |注释 |

MCPC - Model Context Protocol Callback

MCPC is an extension to MCP (Model-Context-Protocol) that solves a critical limitation in LLM tool interactions: enabling continued conversations while running tools background tasks. It facilitates asynchronous two-way communication between LLMs and tools through the already existing MCP transport - no additional transport layer needed, while maintaining full backward compatibility.

What is MCPC?

MCPC is an extension to the MCP protocol, not a replacement. It builds upon the existing MCP infrastructure to add real-time two-way communication capabilities while maintaining full compatibility with standard MCP implementations.

MCPC solves a critical limitation in LLM tool interactions: enabling continuous two-way communication while running background tasks:

• Bidirectional communication between LLMs and tools using the same MCP transport
• Continuous conversation with LLMs during tool execution
• Real-time updates from background processes
• Asynchronous notifications when operations complete
• Support for indefinitely running tasks with streaming updates

Compatibility Matrix

Features

Frameworks

Quick Installation

# With UV (recommended)
uv add mcpc

# With pip
pip install mcpc

Basic Client Usage

# Initialize the MCPC handler
mcpc_handler = MCPCHandler("my-provider")

# Define your event listener function