MCP Go SDK

What is MCP Go SDK?

The MCP Go SDK provides a Go implementation of the Model Context Protocol (MCP), enabling bidirectional communication between clients and servers for tool execution, resource access, and prompt handling. It is designed for Go developers building MCP-compatible applications.

How to use MCP Go SDK?

Install the SDK with go get github.com/SetiabudiResearch/mcp-go-sdk. Then create a server instance using server.NewServer(), add tools, resources, or prompts using the provided methods, and start a transport (stdio, WebSocket, or SSE). See the Quick Start section for a minimal example.

Key features of MCP Go SDK

• Multiple transport options: stdio, SSE, WebSocket
• Tool registration with both sync and async execution
• Resource pattern matching (e.g., files/{path})
• Prompt template rendering and multi-message prompts
• JSON-RPC message handling with core MCP types
• Reflection-based handler invocation

Use cases of MCP Go SDK

• Build custom MCP servers exposing tools and resources
• Create a file server that serves files via MCP (see examples/fileserver)
• Implement a calculator service as an MCP tool (see examples/calculator)
• Develop an interactive chatbot using MCP prompts (see examples/chatbot)