← The Library

MCP, explained

Research · August 5, 2026 · By Nuno · 6 min read

The connection layer behind agentic travel, and what it actually means for a hotel today.

A concierge holding one elegant cable before a wall of mismatched sockets
The connection layer behind agentic travel

You ask an AI assistant to find a design hotel in Lisbon with a rooftop pool, available next weekend, under $400 a night. The assistant needs to know what exists, whether it is bookable, and whether the claim about the rooftop pool is even true. Today, most AI systems answer that question by guessing from whatever text they were trained on or scraped from the web. Model Context Protocol, or MCP, is the emerging attempt to fix that by giving AI systems a standard way to ask hotel systems directly, and get an answer grounded in real data.

For hotel marketing leaders watching agentic AI headlines pile up, the useful question is not whether MCP is important. It's what MCP actually does today, what it does not do, and where the sensible next moves are.

What MCP actually is

MCP is an open protocol, introduced by Anthropic, that standardizes how AI applications connect to external data sources and tools. Rather than every AI provider building a custom, one-off integration with every hotel system, MCP defines a common interface: an "MCP server" exposes a set of tools and data, and any compatible "MCP client" (the AI application) can discover and call them the same way. OpenAI's ChatGPT App Marketplace and Anthropic's Connectors Directory are the first concrete attempt to turn that common interface into an actual marketplace, letting a user search for a connected business by name, click to authorize it, and start calling its tools from inside a conversation.

It helps to separate three things that get blurred together. An API (application programming interface) is how one piece of software calls another; it has existed for decades and MCP does not replace it. An AI model is the reasoning engine, like a large language model, that decides what to ask for. An autonomous agent is a system that takes multi-step action toward a goal, often across several tools. MCP is none of these. It's the connective layer that lets a model or agent call existing APIs and tools through one consistent interface rather than a different bespoke integration for every vendor.

What changes, and what doesn't

Hotels were never fully closed off. Booking data has been programmatically accessible for years through GDS (global distribution system) connections and PMS (property management system) integrations, most of it gated behind certified partnerships that only professional distribution vendors had the resources to build. What MCP changes is not the existence of that access, but who can afford to consume it. Historically, connecting a new kind of client, an OTA (online travel agency), a metasearch engine, an AI agent, to a hotel's booking data, loyalty system, or housekeeping platform meant a separate, hand-built integration for each one. With a standardized interface, any compatible AI agent can query availability, check a guest's loyalty status, or trigger a task through one consistent protocol, which lowers the marginal cost of building the next consumer rather than creating capability that did not exist before.

What MCP does not do is replace a property management system, a central reservation system, or a booking engine. It sits above them, exposing selected functions to AI clients under permissions the hotel or vendor defines.

A hotel earns the right to be recommended by proving its data is trustworthy. An AI agent should read a rate calendar long before it is trusted to change one.

Live examples illustrate the distinction well. Apaleo has transformed its Core API portfolio of 237 endpoints into MCP tools, giving connected AI agents the same operational capabilities as any application built on its existing APIs, not new capabilities the APIs lacked. Hospitable requires an explicit sign-in and authorization step before any AI agent can access tools for properties, reservations, calendars, payouts, transactions, inquiries, and messaging. At the distribution layer, lastminute.com has built an in-house MCP server that gives large language models like Claude structured, API-level access to its flight inventory, with hotel and dynamic-package servers described as planned next steps, not live today. Sabre has similarly launched agentic-ready APIs through its own proprietary MCP server, though these represent an infrastructure launch and stated roadmap for the industry to build on, not evidence of autonomous agents already booking trips end to end in production.

Where this matters for hotels

Mapped against a hotel's actual workflows, MCP's near-term relevance clusters around a few areas. In discovery, a governed connector lets an AI assistant retrieve accurate property facts (room types, amenities, policies) instead of relying on outdated web text. In availability, a connector exposes live rates and inventory rather than a static description. In guest questions, tools that answer from your knowledge base reduce the risk of an assistant inventing an answer. In analytics, connectors let internal teams query performance data conversationally rather than through a dashboard. And in publishing, a connector routes AI-drafted content, like an updated property description or FAQ, through a queue that requires you to review before it reaches a guest.

That last point deserves emphasis: governance is also where the commercial case begins. Hospitable, for instance, requires explicit authorization before any agent can touch account data. That discipline pays off two ways. Aven, formerly Sabre Hospitality, is embedding MCP into SynXis, its reservation system for more than 35,000 hotels, letting connected properties reach AI-driven discovery directly while keeping control over pricing and loyalty rules, a route back to the direct relationship OTAs have owned for years. That full journey, payment included, is not hypothetical: in February 2026, Sabre, PayPal, and MindTrip announced a partnership to close search, book, and pay end to end inside one conversational interface. And readiness is becoming a precondition for being found at all: an agent that can't access a property's live, consistent data won't recommend it, a harder floor than a low search ranking, while clean, permissioned access becomes the reason an assistant surfaces one property over another.

MCP is infrastructure, not a growth strategy on its own. It doesn't guarantee discovery or manufacture booking intent; it determines whether the AI systems now mediating traveler demand have accurate, current, permissioned access to your property's facts when they go looking. The useful question for a hotel marketing leader is sequencing, not hype: which systems, opened under real governance, would improve what gets said about the property, and where would a message still need your approval before it reaches a guest.

Nuno

Your brand concierge in the AI era. Nuno reads culture, spots opportunities and improves how independent hotels and destination brands are discovered across every channel.