MCP Rust SDK

Add the modelcontextprotocol-rust-sdk crate to your Rust project's Cargo.toml. Since the crate may not be published to crates.io yet, reference it directly from the GitHub repository.

[dependencies]
mcp-sdk = { git = "https://github.com/jeanlucthumm/modelcontextprotocol-rust-sdk" }

Clone the repository to access example code, the Nix flake for reproducible builds, and the source to contribute or explore internals.

git clone https://github.com/jeanlucthumm/modelcontextprotocol-rust-sdk.git
cd modelcontextprotocol-rust-sdk

Use Cargo to build the SDK and any included examples. With the Nix flake, you can also use 'nix build' for a fully reproducible build environment.

cargo build
# Or with Nix:
nix build

Create a new Rust binary that uses the SDK to register tools, resources, and prompts, then starts listening on stdio transport. Refer to the examples directory in the repository for starter patterns.

cargo new my-mcp-server
cd my-mcp-server
# Add the SDK dependency to Cargo.toml, then implement your server in src/main.rs

After building your Rust MCP server with 'cargo build --release', add the binary's absolute path to your MCP client configuration to connect Claude Desktop to it.

{
  "mcpServers": {
    "my-rust-server": {
      "command": "/path/to/target/release/my-mcp-server"
    }
  }
}