MCP Go SDK — MCP Protocol

Official SDK for building MCP servers and clients in Go

Basic Information

What is this program?

An official SDK for developers who want to build MCP servers in Go. It abstracts MCP core primitives (tools, resources, and prompts) in a type-safe way.

This SDK runs in Go 1.21 or later environments and supports both stdio and Streamable HTTP transports. You can naturally add MCP capabilities to an existing Go codebase.

What problems does it solve?

• ('In Go projects', 'when you need to implement an MCP server or client', 'ensure protocol compliance with official primitives')
• ('Type safety', 'when you need to prevent incorrect protocol usage at compile time', 'catch mistakes early with the type system')
• ('Multiple transports', 'when you need to support both local stdio and remote HTTP', 'choose the transport that fits your deployment environment')

Key Features

Server implementation

Server API for registering tools, resources, and prompts

• Use case: Expose external tools through MCP
• Outcome: Type-safe server definition
• Limitations: Requires protocol learning

Client implementation

Client API for connecting to MCP servers

• Use case: Call servers from an agent
• Outcome: Connect using the standard protocol
• Limitations: Requires authentication setup

Transport layer

Built-in stdio and Streamable HTTP transports

• Use case: Support both local and remote
• Outcome: Deploy without changing transports
• Limitations: Requires CORS and authentication for remote

Installation and Execution

go

Install using the Go package manager.

go get github.com/modelcontextprotocol/go-sdk

Real-world Usage Examples

Starting the server

go run ./cmd/server

Run the MCP server over stdio.

Advantages and Limitations

Advantages

• Official MCP project, ensuring protocol compliance
• Go idiomatic development patterns
• Multiple transport support

Points to Consider Before Use

• Requires the Go runtime to be installed
• Timing of support for the 2026 specification varies by SDK

Comparison with Similar Programs

Official Resources and Further Learning

• Official homepage — https://modelcontextprotocol.io/docs/sdk
• Official documentation / knowledge base — https://github.com/modelcontextprotocol/go-sdk-sdk
• Installation / distribution — go get github.com/modelcontextprotocol/go-sdk
• Release notes — https://github.com/modelcontextprotocol/go-sdk-sdk/releases
• Source / development resources — https://github.com/modelcontextprotocol/go-sdk-sdk

Version and supported environment information is from the official site as of 2026-10-18. Installation commands may vary depending on your distribution and version, so check the official installation documentation as well.

Actual Execution Screenshots

Synthetic example — not an actual execution result. The screenshot is a synthetic example and not an actual execution result.

!MCP Go SDK usage example

Server in actual operation

Source (HTML): https://games.aidebatehub.com/programs/mcp/protocol/go-sdk.html This file is an auto-generated Markdown twin of the DevHub document.