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
Deepsky Aviation Regulations

Free no-key search over CASA, FAA, EASA & ICAO aviation regulations. By Deepsky (deepskyai.com).

LegalData access / search

Responded1031 ms14 / 22
A2AWire Benchmark: PR1002 R2 prize main

Free to compete: testnet faucet funds everything. PR1002 R2 arithmetic dataset

Data & AnalyticsData access / search

Responded1055 ms14 / 22
PendingDelete.net

Search pending delete and recently dropped domain names, with drop times, Rank and Linking Domains.

Developer ToolsData access / search

Outdated check1055 ms14 / 22
io.github.cyanheads/first-epss-mcp-server

Look up FIRST EPSS scores and daily history, find CVEs by threshold, and prioritize them with CVSS.

Developer ToolsData access / search

Responded1057 ms14 / 22
Campaign Incrementality Audit

Free to compete: testnet faucet funds everything. Separate observed conversion rates from causal…

Marketing & SalesData access / search

Responded1072 ms14 / 22
com.peopleanalyst/discovery

PeopleAnalyst's free people-analytics feeds: answers, tools, evidence, story and scene catalogs.

Data & AnalyticsData access / search

Outdated check1076 ms14 / 22
Consumer-Tech Product News — buy per-query in-session (vergewatch)

Consumer-tech news (The Verge): phones, laptops, TVs. Be born in one call — free testnet funds.

MediaData access / search

Responded1089 ms14 / 22
A2AWire Benchmark: PR1002 R2 prize createblock

Free to compete: testnet faucet funds everything. PR1002 R2 arithmetic dataset

Data & AnalyticsData access / search

Responded1104 ms14 / 22
NASA Mission & Space News — buy per-query in-session (nasanewswatch)

NASA mission & space news: launches, science. $0.01/query. Be born in one call — free testnet funds.

MediaData access / search

Responded1120 ms14 / 22
Tu Lugar

Search and manage Paraguay & LatAm real estate from any AI assistant.

Real Estate & PropertyData access / search

Responded1134 ms14 / 22
GovInbox

Federal contract opportunities for government contractors. Set-aside coverage is the deepest part.

GovernmentData access / search

Responded1146 ms14 / 22
Vynix

Give AI coding agents access to your Vynix visual feedback, bug reports, and AI diagnosis.

HealthcareData access / search

Responded1157 ms14 / 22
MarketCheck API

MarketCheck automotive data: search US/UK listings, predict prices, decode VINs, market history.

OtherData access / search

Responded1181 ms14 / 22
Incident Library

Public post-incident reports as structured cases: search by symptom, read one, list by cause.

HealthcareData access / search

Responded1205 ms14 / 22
Oravan

Nonpartisan U.S. Congress data: bill decodes, rep lookup, bilingual EN/ES, read-only, no accounts.

GovernmentData access / search

Outdated check1223 ms14 / 22
Space Monkey Mailchimp Dashboard

Mailchimp engagement intelligence for AI agents: campaign analytics and audience insights.

Marketing & SalesData access / search

Responded1312 ms14 / 22
Sell to State

Government tenders, contract awards, buyers and suppliers from official sources in 60+ countries.

GovernmentData access / search

Responded1335 ms14 / 22
Vedar — Kamchatka travel

Kamchatka, Russia travel: tours, hotels, transfers, volcano status, safety, booking requests

TravelData access / search

Outdated check1360 ms14 / 22
AgencyZoom MCP by usefulapi

Read leads, customers, policies and tasks; add notes, tasks and leads in AgencyZoom.

Marketing & SalesData access / search

Outdated check1429 ms14 / 22
VaneTools AI Directory

Search curated AI resources: AI tools, MCP servers, prompts, skills, plugins, learning.

Developer ToolsData access / search

Responded1510 ms14 / 22
Nas.com

Official hosted MCP server for Nas.com, the AI marketing platform for SMBs.

Marketing & SalesData access / search

Responded1613 ms14 / 22
Most-Famous-Paintings Masterpiece Guide

Famous paintings: Mona Lisa, Starry Night. Their story, their museum, a reproduction price.

OtherData access / search

Outdated check1635 ms14 / 22
Apptiller

Grow App Store apps: ranks, listing, ads, revenue and AI answers. Sign in to read your own apps.

Marketing & SalesData access / search

Responded1652 ms14 / 22
OriginalUniqueArt Original Art for Sale

Original art for sale: one-of-a-kind paintings by exclusive artists, with price and availability.

OtherData access / search

Outdated check1663 ms14 / 22

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