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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1440 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
MapNetwork

Generate styled PNG/SVG map images of places in Japan with 11 customizable color themes.

MediaCode & DevOps

Responded834 ms15 / 22
Cheapest eSIM Korea (최저가e심)

Daily verified travel eSIM/SIM prices: 54 countries, 1-30 day trips, Korean sellers. Free.

TravelCode & DevOps

Responded850 ms15 / 22
x402 Micropayments MCP

Pay-per-call US city property compliance and Base tx checks, paid in USDC on Base via x402.

Finance & CryptoPayments & trading

Outdated check894 ms15 / 22
Weather

US NWS weather alerts and 5-day forecasts for AI agents. $0.01 per call.

Developer ToolsCode & DevOps

Responded937 ms15 / 22
Smarter Weather

Smarter Weather MCP: forecasts, alerts, outlooks, observations, AQI, grids, and map imagery.

Developer ToolsCommunication & messaging

Responded1010 ms15 / 22
MAQAMI Travel

Official MCP server for MAQAMI, a hotel and flight booking platform with 3M+ hotels.

TravelCode & DevOps

Outdated check1097 ms15 / 22
mtgmon Mortgage Analytics

Read-only U.S. mortgage market, lender, GSE performance, and servicing analytics.

Real Estate & PropertyCode & DevOps

Outdated check1178 ms15 / 22
SOS Flights

Live reroutes, desk scripts, airport help and EU261/UK261/US DOT rights for disrupted flights.

TravelCode & DevOps

Outdated check1297 ms15 / 22
SlickTrip

Live flight, hotel and seat prices, cheapest-day calendars, and price-drop alerts.

TravelData access / search

Outdated check1336 ms15 / 22
DogPolicies

Verified dog rules for California and Nevada travel: hotel pet fees, trip plans, highway stops

TravelCode & DevOps

Responded1390 ms15 / 22
Energy Projects AU Commercial Solar Assessment

Indicative commercial rooftop solar assessments for Australian buildings, from open map data.

Developer ToolsCode & DevOps

Outdated check1480 ms15 / 22
Hungry eSIM

Travel eSIMs: unlimited data, pick your days, top up existing eSIMs, card checkout, no API key.

Finance & CryptoPayments & trading

Outdated check1677 ms15 / 22
GeoSpark

Verifiable geospatial tools: distances, topology, isochrones, Overture Maps, with sources.

Data & AnalyticsCode & DevOps

Outdated check1695 ms15 / 22
Election Odds Desk

Kalshi odds for 2026 Senate, governor and House races, the Senate map, and the next Fed meeting.

ProductivityFile & docs

Outdated check1962 ms15 / 22
Weather Markets Edge Desk

Kalshi weather markets: daily-high board beside the NWS forecast, live edges, EV, Kelly, base rates.

Data & AnalyticsData access / search

Outdated check2047 ms15 / 22
Pro Flight Search Airport Delays

Read-only airport delay, weather, and 24h forecast tools for AI assistants. Airport-level only.

TravelData access / search

Outdated check2299 ms15 / 22
Aviation & Space Weather Data (Tanod)

Flight and sky conditions for agents, from METAR/TAF and airports to aurora and satellite passes.

TravelData access / search

Outdated check2341 ms15 / 22
Eigenheim Invest – Berlin Real Estate Market

Live Berlin property prices per m², rental yields, land values 2026 and listings. Read-only.

Real Estate & PropertyCode & DevOps

Outdated check2447 ms15 / 22
Departi – Travel Compliance & Curated Booking

Travel-compliance intelligence and curated booking for digital nomads and long-stay travellers.

TravelData access / search

Outdated check6155 ms15 / 22
Dubai Data — Dubai real estate statistics

Dubai property prices, AED/sqft, sales, rents, yields and projects from DLD registered transactions.

Real Estate & PropertyData access / search

Outdated check35 ms14 / 22
Weatherbit MCP by usefulapi

Read Weatherbit forecasts, weather history, air quality, agriculture, energy, and API usage.

Data & AnalyticsData access / search

Outdated check53 ms14 / 22
Open To Close MCP by usefulapi

Review Open To Close properties and transaction records; add contacts and property notes.

ProductivityFile & docs

Responded56 ms14 / 22
Zenserp MCP by usefulapi

Search Google, images, news, maps, shopping, YouTube, jobs, hotels, flights and trends with Zenserp.

MediaData access / search

Outdated check56 ms14 / 22
Hostfully MCP by usefulapi

Check properties, calendars, leads, quotes, guests and messages in Hostfully, and send replies.

Marketing & SalesData access / search

Responded60 ms14 / 22

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