Model Context Protocol (MCP) Rust SDK

What is Model Context Protocol (MCP) Rust SDK?

A Rust implementation of the Model Context Protocol (MCP), designed for seamless communication between AI models and their runtime environments. It is currently a work in progress and not ready for production use.

How to use Model Context Protocol (MCP) Rust SDK?

Add mcp_sdk_rs = "0.1.0" to your Cargo.toml. Then use the provided client and server examples: create a transport (WebSocket or stdio), set up mpsc channels, start a session, and make requests or serve. Both examples use Tokio for async execution.

Key features of Model Context Protocol (MCP) Rust SDK

• Full implementation of MCP protocol specification
• Multiple transport layers (WebSocket, stdio)
• Async/await support using Tokio
• Type-safe message handling
• Comprehensive error handling
• Zero-copy serialization/deserialization

Use cases of Model Context Protocol (MCP) Rust SDK

• Network-based communication between AI models and remote runtime environments
• Local process communication for command-line AI tools and development
• Building custom MCP servers and clients in Rust
• Integrating with WebSocket (WSS/WS) or stdio transports

FAQ from Model Context Protocol (MCP) Rust SDK

Is this SDK production‑ready?

No, the SDK is currently a work in progress and explicitly labeled as not ready for production use.

What transport layers does the SDK support?

It supports WebSocket (secure and standard) for network communication and stdio for local process communication.

What are the main runtime dependencies?

The SDK uses Tokio for async runtime and provides async/await support throughout.

How is error handling structured?

The SDK provides a comprehensive Error type that distinguishes protocol errors, transport errors, and other errors, enabling fine‑grained error handling.

What license does the SDK use?

The project is licensed under the MIT License. It was originally forked from mcp-rust-sdk.