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# Rust MCP Stdio Server Test
This repository contains a simple example of a [Model Context Protocol (MCP)](https://modelcontextprotocol.io/) 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:
```bash
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:
```json
{
"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](LICENSE) file for details.
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