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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5788 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
Agency Search Tool

Find agencies worldwide by service and location, with editorial ratings and contact details.

OtherData access / search

Outdated check63 ms13 / 22
Raziel Calculators

Free investment and startup math, guide search and prompts: IRR, MOIC, SAFE, QSBS, burn multiple.

OtherData access / search

Outdated check63 ms13 / 22
Pobuca Connect MCP by usefulapi

Read and update Pobuca Connect contacts and organizations; look up teams and custom fields.

Developer ToolsData access / search

Outdated check63 ms13 / 22
Iberá Experience

Iberá Wetlands (Argentina) travel guide: gateways, routes, 500+ local providers, bookable trips.

TravelData access / search

Outdated check64 ms13 / 22
HotelRefund Price Tracker

Tracks Agoda hotel prices for your dates, keeps checking, and shows what changed — with evidence.

TravelData access / search

Outdated check65 ms13 / 22
Housecall Pro MCP by usefulapi

Manage Housecall Pro customers, jobs, estimates and leads; schedule and dispatch jobs.

Marketing & SalesData access / search

Outdated check66 ms13 / 22
SignUpSheet.page

Free sign-up sheets, date polls and group cards people join from one link. No accounts, no ads.

Marketing & SalesData access / search

Outdated check67 ms13 / 22
Smallfire Lab public-records checks

Free read-only lookups of Oregon contractor licenses and FDA food recalls for AI agents. No key.

GovernmentData access / search

Outdated check68 ms13 / 22
Argentina al Mundo

Argentina's 24 provinces, gastronomy, chefs, luxury products and official travel data. 17 languages.

TravelData access / search

Outdated check68 ms13 / 22
Marian

A planned US home mortgage whose interest rate can only go down. Pre-launch; not lending yet.

Real Estate & PropertyData access / search

Outdated check69 ms13 / 22
Happy Island Cottage booking

Availability, exact all in quotes and booking requests for 3 vacation homes on Anna Maria Island, FL

TravelData access / search

Outdated check69 ms13 / 22
Order Desk MCP by usefulapi

Search Order Desk orders and inventory; read order items and shipments; create or update orders.

Developer ToolsData access / search

Outdated check69 ms13 / 22
Spatial India

District-level open data for India — Census, NFHS-5, NCRB, RBI and more, joined onto one geography.

GovernmentData access / search

Outdated check71 ms13 / 22
AHM Transfer

Fixed prices, conditions and booking links for airport transfers in Alanya and Antalya, Türkiye.

TravelData access / search

Outdated check71 ms13 / 22
blip.zone, the Agent Bazaar

Open network of AI agents: search, posts, replies, reports. Run by AI agents for Kalo Software GmbH.

Developer ToolsData access / search

Outdated check71 ms13 / 22
Vooks catalog

Search the Vooks children's library by age, topic and language, and read published prices.

OtherData access / search

Outdated check72 ms13 / 22
HotelShortlist

Independent hotel research from guest reviews: bed bugs, pests, noise and hidden fees.

TravelData access / search

Outdated check72 ms13 / 22
JP Election Discovery

Read-only index to Japanese election data, official sources, relations and scoped search history.

Developer ToolsData access / search

Outdated check73 ms13 / 22
Shop Boss MCP by usefulapi

Read repair orders, appointments, customers, vehicles, parts and shop reference data.

E-commerceData access / search

Outdated check73 ms13 / 22
MamaChoice

Israeli Hebrew baby-product buying guides: find a guide, its products in ILS, FAQ; live search.

OtherData access / search

Outdated check74 ms13 / 22
Aucadastre

A French address, all public facts: parcel, zoning, risks, permits, sales, energy labels. No key.

Real Estate & PropertyData access / search

Outdated check74 ms13 / 22
LunaTerminal

Planning calculators and market data for financial advisors: Roth, RMD, Social Security, 13F.

Finance & CryptoData access / search

Outdated check74 ms13 / 22
TickerDB

Pre-computed market data that improves agent reasoning, reduces token usage, and replaces pipelines.

Finance & CryptoData access / search

Outdated check75 ms13 / 22
Estimate My Paycheck

US take-home pay after federal, FICA and state taxes, all 50 states and DC.

GovernmentData access / search

Outdated check75 ms13 / 22

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