MCP Rust SDK — MCP protocol

Official SDK for building MCP servers and clients in Rust

Basic Information

What is this program?

This is the official SDK for developers who want to build MCP servers in Rust. It provides type-safe abstractions for MCP core primitives (tools, resources, prompts).

This SDK runs on Rust 1.75 or higher and supports both stdio and Streamable HTTP transports. You can add MCP capabilities naturally to an existing Rust codebase.

What problems does it solve?

• ('In a Rust project', 'when you need to implement MCP servers and clients', 'guarantees 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 an MCP server

• Use case: Call servers from an agent
• Outcome: Connect via the standard protocol
• Limitations: Authentication setup required

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 running

cargo

Install with the Rust package manager.

cargo add rmcp

Real-world usage example

Starting the server

cargo run

Runs the MCP server over stdio.

Advantages and limitations

Advantages

• Official MCP project, ensures protocol compliance
• Idiomatic Rust development patterns
• Supports multiple transports

Points to consider before use

• Requires Rust runtime installation
• Timing for 2026 specification support 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/rust-sdk-sdk
• Installation / distribution — cargo add rmcp
• Release notes — https://github.com/modelcontextprotocol/rust-sdk-sdk/releases
• Source / development resources — https://github.com/modelcontextprotocol/rust-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 also check the official installation documentation.

Actual execution screenshot

Synthetic example — not an actual run result. The screen is a synthetic example and not an actual run result.

!MCP Rust SDK usage example

Actual production server

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