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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1470 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
DoDomain

Connect custom domains via AI agents: DNS pre-flight checks, hand-off connect sessions and checks.

TravelData access / search

Requires authOutdated checkNot measured4 / 22
DoorLoop MCP Server and API by Cotlet

DoorLoop rental property management MCP server: list tenants, create lease, post rent charge.

Real Estate & PropertyData access / search

Requires authOutdated checkNot measured4 / 22
Dream Trip

Your saved travel places, lists and trips. Plan day-by-day itineraries that land in Dream Trip.

TravelData access / search

Requires authNot measured4 / 22
Dubai Real Estate Data

Dubai property market figures from official DLD open data: prices, rents, yields, monthly reports.

Real Estate & PropertyData access / search

Requires authNot measured4 / 22
EasyTerritory MCP

Build, balance, realign and analyze sales/service territories; geocode, route, schedule, live map.

Data & AnalyticsData access / search

Requires authNot measured4 / 22Not checked yet
Environment & energy

UK river levels and rainfall, bathing waters, flood warnings, weather, earthquakes and the GB…

Data & AnalyticsData access / search

Requires authNot measured4 / 22Not checked yet
Errandkit Census Tract & Demographics

Geocode US addresses to census tracts and add ACS demographics. Runs on Apify.

GovernmentData access / search

Requires authNot measured4 / 22Not checked yet
eSIM Finder

Find, compare & buy travel eSIMs for 190+ countries + a 12-month Travel Pass. 40 currencies.

TravelData access / search

Requires authOutdated checkNot measured4 / 22
esimker eSIM store

Prepaid travel data eSIMs: checkout links for people, autonomous purchases from a prepaid wallet.

Finance & CryptoPayments & trading

Requires authNot measured4 / 22Not checked yet
Esoru by resortlife.travel

Read-only Maldives resort research, comparisons and media for approved travel agencies.

TravelData access / search

Requires authNot measured4 / 22Not checked yet
EU Tender Gap

EU tenders with no bid, deadlines, competitor maps and company dossiers, dated and stamped.

OtherOther

Requires authNot measured4 / 22Not checked yet
EU261 Flight Compensation

EU261 flight delay compensation: check eligibility, compute EV, track fares. 6 tools, 35+ airports.

TravelData access / search

Requires authOutdated checkNot measured4 / 22
ExplorersMap

Update your ExplorersMap travel map from an AI assistant: countries, regions, places and trips.

TravelData access / search

Requires authNot measured4 / 22Not checked yet
featury

Ask what your product does, triage requests and publish the changelog, from a map of your code.

OtherOther

Requires authNot measured4 / 22
FetchRelay

Extract public webpages as Markdown, map sites, and run bounded crawl jobs. API key required.

OtherBrowser & web scraping

Requires authNot measured4 / 22Not checked yet
Finding Horizons

Your saved places, trips and travel plans — see them, plan days, and add to them from your AI.

TravelData access / search

Requires authNot measured4 / 22
Flett

A shared whiteboard: draw diagrams, docs, slides, charts and maps on boards people edit live.

OtherOther

Requires authNot measured4 / 22
FlyItalyADSB

Live and historical aircraft tracking from an open ADS-B/MLAT network, with a live map in chat

Marketing & SalesData access / search

Requires authNot measured4 / 22
fourzerotwo

400+ data APIs for agents: UK companies, property, trade, tenders, recalls, sanctions. Free tier

OtherOther

Requires authNot measured4 / 22Not checked yet
FrazzleCRM

CRM + visual automation builder AI agents can drive via MCP: contacts, tags, maps, email/SMS flows.

ProductivityCommunication & messaging

Requires authNot measured4 / 22Not checked yet
Gaduin

Read-only flight, train, airport and chokepoint status plus prediction markets on transport delays.

TravelData access / search

Requires authNot measured4 / 22Not checked yet
GateRoam

Amadeus flight search, pricing and client offers for travel agencies, on their own contract.

TravelData access / search

Requires authNot measured4 / 22
Geloky Geocoding

Geocode and reverse geocode addresses, road distances and multi-stop routes. $0.001 per lookup.

Data & AnalyticsData access / search

Requires authNot measured4 / 22Not checked yet
gentry.fr, le logement en France

French housing data for every commune: sale prices, rents, property tax and rent control.

Real Estate & PropertyData access / search

Requires authOutdated checkNot measured4 / 22

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