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An official Rust Model Context Protocol SDK implementation with tokio async runtime.

This repository contains the following crates:

• rmcp: The core crate providing the RMCP protocol implementation (If you want to get more information, please visitrmcp)
• rmcp-macros: A procedural macro crate for generating RMCP tool implementations (If you want to get more information, please visitrmcp-macros)

rmcp = {version ="0.2.0",features = ["server"] }## or dev channelrmcp = {git ="https://github.com/modelcontextprotocol/rust-sdk",branch ="main" }

Basic dependencies:

• tokio required
• serde required

use rmcp::{ServiceExt, transport::{TokioChildProcess,ConfigureCommandExt}};use tokio::process::Command;#[tokio::main]asyncfnmain() ->Result<(),Box<dyn std::error::Error>>{let client =().serve(TokioChildProcess::new(Command::new("npx").configure(|cmd|{        cmd.arg("-y").arg("@modelcontextprotocol/server-everything");}))?).await?;Ok(())}

use tokio::io::{stdin, stdout};let transport =(stdin(),stdout());

let service = common::counter::Counter::new();

// this call will finish the initialization processlet server = service.serve(transport).await?;

// requestlet roots = server.list_roots().await?;// or send notificationserver.notify_cancelled(...).await?;

let quit_reason = server.waiting().await?;// or cancel itlet quit_reason = server.cancel().await?;

Seeexamples

Seeoauth_support for details.

• MCP Specification
• Schema

• rmcp-actix-web - Anactix_web backend forrmcp
• rmcp-openapi - Transform OpenAPI definition endpoints into MCP tools

• rustfs-mcp - High-performance MCP server providing S3-compatible object storage operations for AI/LLM integration
• containerd-mcp-server - A containerd-based MCP server implementation
• rmcp-openapi-server - High-performance MCP server that exposes OpenAPI definition endpoints as MCP tools
• nvim-mcp - A MCP server to interact with Neovim

Seedocs/CONTRIBUTE.MD to get some tips for contributing.

If you want to use dev container, seedocs/DEVCONTAINER.md for instructions on using Dev Container for development.