What is an MCP Server?

An MCP (Model Context Protocol) server acts as a bridge, allowing AI models to access and interact with external data sources, tools, and most importantly, human input. It standardizes how applications provide context to LLMs.

How does the Human-In-the-Loop MCP Server work?

It enables AI assistants to interact with humans through intuitive GUI dialogs, providing real-time user input tools, choices, confirmations, and feedback mechanisms.

What are the key features of the MCP Server?

Key features include interactive dialog tools (text input, multiple choice, etc.), a modern cross-platform GUI (Windows, macOS, Linux), and advanced features like non-blocking operation and timeout protection.

How do I install the Human-In-the-Loop MCP Server?

You can install it quickly using uvx or manually via pip install hitl-mcp-server.

How do I configure the server to work with Claude Desktop?

You need to add a configuration block to your claude_desktop_config.json file, specifying the command to run the server (either using uvx or the direct hitl-mcp-server command).

What kind of tools are available in this MCP Server?

The server provides tools like get_user_input, get_user_choice, get_multiline_input, show_confirmation_dialog, show_info_message, and health_check.

What platforms are supported by this server?

The server supports Windows, macOS, and Linux.

What is the response format from the server?

All tools return structured JSON responses with information about the success of the operation, user input, and platform details.

Why would I use a Human-In-the-Loop MCP Server?

When user instructions are unclear, when you need user preference between valid alternatives, for creative input, before executing potentially destructive actions, when you need specific details not provided, To get user validation on intermediate results

Is the UI customizable?

The GUI offers modern styling and design and aims to fit with the design of the host platform(Windows 11 style for Windows, native macOS experience, etc), customization options are limited in the current version.

Is the use of uvx mandatory?

No, uvx is recommended for easy installation and use, but it’s not mandatory. You can also install and run the server using pip.

Is there a timeout?

Yes, the default timeout is 5 minutes (300 seconds) for dialogs to prevent hanging operations.