MCP HeartbeatTHE MCP OBSERVATORY
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Evidence for your next connection.

Independent measurements of remote MCP servers. Every observation has a timestamp.

Read-only probes

DiscoveryServer directory

Remote MCP servers

Find a server for your workflow, with connection evidence you can inspect.

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631 servers

Ordered by checks passedClear filters
Dated server measurements. The status describes the last probe or a listed authentication requirement. Checks that have not been measured are not failures. Open a server to inspect the evidence.
Server / capabilityLast probeMedian latencyChecks passedLast checked
FlightAware MCP

Live flight status and scheduled-route search via the official FlightAware AeroAPI.

TravelData access / search

Responded78 ms12 / 22
Flightcat

Search flights by flexible dates and broad destinations, with live prices and booking links.

TravelData access / search

Outdated check81 ms12 / 22
Airbnb MCP

Airbnb stays worldwide: search by place, dates, guests with total prices and links; listing details.

TravelData access / search

Responded83 ms12 / 22
com.stopovercity/stopover-planner

Live Google Flights search: stopover itineraries, country sweeps, explore anywhere, booking links

TravelData access / search

Outdated check84 ms12 / 22
Booking MCP

Experimental Booking.com hotel search: nightly price, rating, stars and booking link.

TravelData access / search

Responded86 ms12 / 22
Google Flights MCP

Live Google Flights fares: search routes, discover cheap deals from an origin.

TravelData access / search

Responded92 ms12 / 22
Google Hotels MCP

Live Google Hotels search: properties with rates and ratings, plus photos and reviews.

TravelData access / search

Responded102 ms12 / 22
Zovo Countdown Chain

Make a printable countdown calendar to the day you are waiting for: a vacation, a wedding.

TravelCode & DevOps

Outdated check105 ms12 / 22
Casa Rosanna – Porto Ottiolu, Sardinia

Holiday home in Porto Ottiolu, Sardinia: availability, direct prices, sheltered beaches today.

TravelData access / search

Outdated check107 ms12 / 22
booboooking Appointment Booking

Book appointments with service providers on booboooking.com — no token required.

TravelData access / search

Outdated check129 ms12 / 22
AIS Agent Flight Recorder — dead-man alerts & resume for AI agents

Dead-man switch for AI agents & cron jobs: heartbeat with state capsule, alerts + resume links

TravelAutomation & workflows

Responded136 ms12 / 22
Outdated check136 ms12 / 22
Discover Canal Cruises – private tours in Leiden

Private canal cruises in Leiden, Netherlands: availability, group prices and a booking link.

TravelData access / search

Outdated check149 ms12 / 22
trivago

trivago's mcp server to find your ideal hotel and compare prices from multiple providers.

TravelData access / search

Outdated check175 ms12 / 22
Aventuro

Find travel places (sights, museums, parks, beaches) and read place cards. Read-only, no auth.

TravelData access / search

Outdated check186 ms12 / 22
Blue Pillow Hotels & Stays

Neutral hotel & stay price comparison for AI agents: live prices from 16+ booking sites. No signup.

TravelData access / search

Responded196 ms12 / 22
Dove Living – Apartments Schwandorf

Book vacation apartments in Schwandorf, Germany: live availability, final prices, booking link.

TravelData access / search

Outdated check198 ms12 / 22
eSky holidays

Search eSky holiday packages (flight + hotel), destination ideas and regions, with a booking link.

TravelCode & DevOps

Outdated check203 ms12 / 22
Bookd

Search and request stays at independent hotels, B&Bs, guesthouses and vacation rentals, direct.

TravelData access / search

Outdated check207 ms12 / 22
AeroCell: eSIM Travel Data

Search live AeroCell travel eSIM plans, prices and coverage for countries and multi-country trips.

TravelCode & DevOps

Outdated check211 ms12 / 22
Premium cruise fares

Search premium cruise fares by line, ship, nights, date, and rate.

TravelData access / search

Outdated check236 ms12 / 22
TravelType

Search and explore a global travel points-of-interest catalog (cities, countries, POIs).

TravelCode & DevOps

Outdated check241 ms12 / 22
Skyalo Travel Connectivity Guide

Estimate mobile-data needs and build a provider-neutral connectivity checklist for any trip.

TravelData access / search

Outdated check268 ms12 / 22
Best Western Hotels

Search Best Western hotels worldwide: descriptions, addresses, contacts, amenities and photos.

TravelData access / search

Outdated check269 ms12 / 22

Automated measurements. Not a rating. Unmeasured checks are not failures. How to read the evidence