"How to allow an LLM to ask questions to a user" matching MCP servers:

An MCP server that exposes the Wunder Mobility v2 end-user API as tools, enabling clients to browse vehicles, manage rentals, and create reservations on behalf of a signed-in user.

Enables travel-related queries and planning including weather, train and flight information, itinerary generation, and travel knowledge retrieval via RAG, using an AI agent with MCP protocol.

Enables AI agents to query real-time fuel station availability and summaries across Thailand via MCP tools.

Enables users to search for hotels by location and maximum price per night, returning hotel options with ratings and estimated total costs.

Enables natural language queries for Porto Alegre's public transport system, including route planning, stop search, and route information via Claude Desktop or any MCP-compatible client.

Enables AI assistants to search for vehicles, manage reservations, and access Enterprise Plus loyalty account information through headless browser automation on enterprise.com. It supports the complete car rental workflow including vehicle searching, booking, modifications, and points balance checks.

Enables interactive trip planning and booking through MCP Apps cards, with constraint-based scoring, cross-session memory, and a two-phase booking flow that requires explicit confirmation before charging.

Provides Estonian public transport timetables, trip planning, stop search, and real-time vehicle tracking.

A Model Context Protocol server that provides real-time access to Hong Kong's KMB and Long Win Bus route information and arrival times, enabling Language Models to answer user questions about bus routes, stops, and ETAs.

An MCP server that integrates with the Amadeus Flight Availabilities Search API to allow users to search for available flights and view seat availability in real-time.

Live USPS, UPS, FedEx and DHL Express parcel rates from a US origin, domestic or to Canada, the UK, Germany and Australia, from a plain-words item description: no scale, no account, no API key. Also creates checkout links, reports checkout status, tracks parcels bought on smklog.com and serves a monthly US parcel price index.

Provides read-only access to live Bay Area transit data, including routes, stops, real-time departures, vehicle positions, and service alerts, for use by large language models.

Provides live California road conditions, route planning, and an AI assistant over MCP, enabling natural-language queries about traffic, closures, chain controls, and more.

Provides AI agents with live access to over 1 million traffic cameras worldwide, enabling search by bounding box, radius, route, or nearest point and fetching live frames.

Provides real-time fuel prices at gas stations in Spain using the government's public API. Enables users to find the cheapest fuel in a municipality or list stations sorted by price.

Vacation rental software. A signed stay offer on the host's own domain. Agents discover a host domain, verify an Ed25519-signed offer (VRP), and send the guest to that domain to book and pay the host. Do not compare hosts or prices. HemmaBo + VRP, 6 runtime tools: 2 HemmaBo tools, 2 host onboarding tools, and 2 VRP verification tools. Not an OTA. Not a marketplace.

Enables Claude to plan trips by performing live searches against Google Flights, hotels, vacation rentals, activities, and events, plus weather and currency conversion.

Enables AI assistants to plan container and truck loads from plain-English shipment descriptions, returning fitted containers, utilization, non-fitting items, and interactive 3D load plans.

Enables AI assistants to search hotel rooms by number of nights within a flexible date range, returning real prices and the cheapest deals with booking links. It also supports city resolution, hotel listing, and offer details for external booking completion.

Enables LLMs to search and book flights across 300+ airlines, manage travel orders, and search airports through the Duffel API with support for real-time pricing, multi-city trips, and flexible cabin classes.