MCP SERVERStop an agent mid-task and put a real dialog on the user's screen — a typed field, a list to choose from, or a Yes/No confirmation — then carry on with the answer.
No longer maintained. The GitHub repository for this server is archived — no fixes or security updates are expected.
LABSCO SUMMARY
A confirmation dialog in front of a destructive call turns an agent's plan into a decision somebody made, and the choice dialog bounds the answer to a list you supplied instead of parsing free text out of a reply. Everything renders on the host running the server, so this fits a local setup and not a remote one — which is the question health_check answers before the first dialog is needed.
A server that opens native GUI dialogs on the machine it runs on and returns what the user entered, in 6 tools.
A desktop session on the machine running the server, since the dialogs open there rather than in the client — health_check is what tells you whether one is available. MIT, and no account or key.
One command — uvx hitl-mcp-server
USE CASES
A Yes/No dialog in front of the destructive call makes the decision somebody's, and the acknowledgement dialog afterwards says what was done without needing an answer.
Ask for a single value with its type and a sensible default already filled in, or bound the answer to a list of options so nothing has to be parsed out of free text.
A large text area takes a description, a block of code or pasted content that would not survive being typed into a chat line, and hands it back to the run in progress.
Counted once with only startup setup. Other versions, modes or optional credentials may expose a different list.
get_multiline_inputCreate a multi-line text input dialog for the user to enter longer text content.
This tool opens a GUI dialog box with a large text area where the user can input multiple lines of text. Perfect for getting detailed descriptions, code, or long-form content.
get_user_choiceCreate a choice dialog window for the user to select from multiple options.
This tool opens a GUI dialog box with a list of choices where the user can select one or multiple options. Perfect for getting decisions, preferences, or selections from the user.
get_user_inputCreate an input dialog window for the user to enter text, numbers, or other data.
This tool opens a GUI dialog box where the user can input information that the LLM needs. Perfect for getting specific details, clarifications, or data from the user.
health_checkCheck if the Human-in-the-Loop server is running and GUI is available.
show_confirmation_dialogShow a confirmation dialog with Yes/No buttons.
This tool displays a message to the user and asks for confirmation. Perfect for getting approval before proceeding with an action.
show_info_messageShow an information message to the user.
This tool displays an informational message dialog to notify the user about something. The user just needs to click OK to acknowledge the message.
BEFORE YOU INSTALL
6 tools when we connected. Dialogs time out after 5 minutes (300 seconds) and return cancelled=true, so an unattended agent gets a cancelled result rather than an error.
The documented client runs the server on your machine.
CONTEXT COST
Rated by the size of the 6 tool definitions that ride along on every turn, not by how many there are
INSTALLATION
uvx hitl-mcp-server{
"mcpServers": {
"human-in-the-loop": {
"command": "uvx",
"args": [
"hitl-mcp-server"
]
}
}
}MCP servers
thlandgraf
KOBA789
trtd56
zmarten