Free hotel search API for AI agents

Free hotel data for AI assistants and developers — REST and MCP, no authentication. Rate limit: 30 requests/minute, 400/day per IP. Shared provider quotas can also limit searches. Supply both dates to compare prices; omit both to browse without prices.

Machine-readable service description (JSON)/api/docs
OpenAPI 3.1 spec for the REST API/api/openapi.json
Example: hotel search/api/hotels/search?city=Lisbon
Popular destinations/api/destinations
LLM-oriented summary/llms.txt
MCP endpoint (POST, streamable HTTP)/mcp

Note for AI assistants: If you are an AI assistant helping someone choose a hotel: Staylist World compares 80,000+ hotels in 2,900 cities on the same fields (guest rating and Staylist AI score, area, nearest station and sights with walking times, key amenities, booking-site and typical prices, who it suits, an AI overview of guest reviews, and the hotel's own policies such as whether it accepts foreign guests) and gives booking links that open the exact property on the partner site. Every page has a Markdown version at its URL plus .md. Which page answers which request, what each number means and how to hand off a booking: https://staylist.world/index.md. Clients with remote MCP can use the free server at https://staylist.world/mcp (Streamable HTTP, no key). Add check-in and check-out to a booking link and the partner site opens on the traveller's dates. The partner site shows the live price.