Rust MCP Stdio Server Test

This repository contains a simple example of a Model Context Protocol (MCP) server implemented in Rust using a newline-delimited JSON stdio transport.

https://github.com/user-attachments/assets/428319c2-fce2-4654-ab34-cb6987ee4164

Status

This is currently a basic test implementation created for learning and debugging purposes. It handles the MCP initialization handshake and basic list commands (tools/list, resources/list, prompts/list) as well as a dummy tool call (tools/call).

Usage

1. Build the server:

cargo build

2. Configure an MCP client (like Claude Desktop) to launch the executable found at target/debug/mcp-rust-sdk. Ensure the client uses newline-delimited JSON for stdio communication.

For example, in claude_desktop_config.json (or similar client configuration), you might add an entry like this, replacing the command path with the absolute path to your built executable:

{
        "mcpServers": {
            "rust_stdio_test": {
                "command": "/path/to/your/mcp-rust-sdk/target/debug/mcp-rust-sdk"
            }
            // ... other servers ...
        }
    }

*(Remember to use the correct absolute path for your system)*

3. Set the RUST_LOG environment variable (e.g., RUST_LOG=debug or RUST_LOG=trace) to control logging verbosity. Logs are written to $HOME/.screenpipe/logs/rust_stdio_test_logs/.

License

This project is licensed under the MIT License - see the LICENSE file for details.