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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7383 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
Context Pill

Daily feed of AI releases, tools and techniques, each labeled with how it was checked.

OtherOther

Outdated check122 ms15 / 22
Uptimepage

Monitor uptime and incidents, run checks, and publish status updates from your Uptimepage org.

OtherMonitoring & observability

Outdated check123 ms15 / 22
AIAgentCycle

Read-only facts on AIAgentCycle: n8n automation, AI agents, integrations, prices, cases (NL/EN).

OtherAutomation & workflows

Outdated check127 ms15 / 22
Equation.io

Create interactive 2D and 3D graphs with validated equations, shareable links, and PNG previews.

OtherOther

Outdated check128 ms15 / 22
GQLTeam (Dan Podina)

Services, case studies, articles and contact details of software architect Dan Podina.

OtherOther

Outdated check130 ms15 / 22
Digital Gemology: gem identification and gemstone properties

Identify gemstones by refractive index, birefringence, SG, pleochroism and spectrum. Compare 7 gems

OtherOther

Outdated check141 ms15 / 22
Digital Gemology: gemstone and diamond cut library

Gemstone and diamond cuts: ray-traced brilliance, fire and sparkle in 7 gems, 3D and faceting files

OtherOther

Outdated check143 ms15 / 22
Cellarion Wine Registry

Public wine registry and guides: search wines, grapes, regions, appellations. No account.

OtherData access / search

Outdated check144 ms15 / 22
PakBus

Bus and metro journeys, departures, routes, fares and service changes in Pakistani cities.

OtherOther

Outdated check151 ms15 / 22
StackTheDeal Deals

Live, verified deals from StackTheDeal — every price checked on the retailer's own page.

OtherOther

Outdated check160 ms15 / 22
Digital Gemology: gemology glossary and grading report terms

Gemology glossary: grading report terms, 4 Cs, clarity, colored gemstones, how sparkle is measured

OtherOther

Outdated check160 ms15 / 22
PostData

No-signup IoT backend: device names, sensor readings, history and live charts. No API key needed.

OtherOther

Outdated check160 ms15 / 22
Agent Cost Hub

LLM API prices and AI agent cost estimates, verified daily. Read-only cost lookup tools.

OtherData access / search

Outdated check167 ms15 / 22
Holos33

Read-only facts on Holos33, an EU privacy-first wellbeing platform: modules, Early Access, privacy.

OtherOther

Outdated check168 ms15 / 22
Shipshape Data

Services, case studies, 169 data and AI guides, and AI readiness scoring. Read-only, keyless.

OtherOther

Outdated check169 ms15 / 22
Dim Hour

Search 19,000+ verified places to eat and drink across 24 cities, each with a 0-100 quality score.

OtherData access / search

Outdated check173 ms15 / 22
CardWorthScanner — TCG Price, Centering & PSA Grading ROI Engine

Calculate PSA/BGS/CGC card grading ROI, 55/45 centering grades & Pokemon/Yu-Gi-Oh market values.

OtherOther

Outdated check173 ms15 / 22
Ullas Opskrifter (Danish recipes)

Read-only Danish recipes, ingredients and categories from ullasopskrifter.dk: search and browse.

OtherData access / search

Outdated check174 ms15 / 22
Urantia Papers

The Urantia Papers in English and Spanish, with cross-references to the Bible and 21 texts. No key.

OtherOther

Outdated check180 ms15 / 22
Paylo

Search verified Nigerian stores, products and services on Paylo. Read-only, no account needed.

OtherData access / search

Outdated check184 ms15 / 22
InkQuest

Browse free InkQuest stories, openings, and HSK recommendations.

OtherOther

Outdated check187 ms15 / 22
ProofSnap Verify

Check by manifest SHA-256, without an account, whether the ProofSnap API issued an evidence package.

OtherOther

Outdated check190 ms15 / 22
Homo Universalis — Swiss Ephemeris Astrology, Natal Chart, Synastry & Cosmic Soul MCP Oracle

Swiss Ephemeris natal chart, 3D soul synastry & cosmic ephemeris oracle (<1.5ms, Zero-Auth).

OtherOther

Outdated check192 ms15 / 22
Homo Universalis — Viveka Astrology, Natal Chart, Synastry, BaZi, Vedic, Mayan & Tarot MCP Oracle

Swiss Ephemeris Astrology, Natal Chart, 3D Synastry, BaZi, Vedic, Mayan, I-Ching, Tarot & Kabbalah.

OtherOther

Outdated check196 ms15 / 22

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