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

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7709 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
Church Year

Western church year: seasons, colors, feasts, Easter and Pascha, and the 1979 BCP Sunday lectionary.

OtherOther

Responded593 ms14 / 22
Arkana tarot

Fairly shuffled Rider–Waite–Smith tarot draws, spreads and card meanings (English, Lithuanian).

OtherOther

Responded594 ms14 / 22
Hera Fertility

Find male fertility testing at labs near a US ZIP code, with prices and a link to order.

OtherOther

Responded594 ms14 / 22
Virtual Assistant International

Courses, live prices, jobs platform and support info from Virtual Assistant International.

OtherOther

Responded595 ms14 / 22
LeanScale GTM Knowledge

GTM operations knowledge: delivery playbooks, field studies, benchmarks and operator interviews.

OtherOther

Responded596 ms14 / 22
eu.e-vignettes/vignette-id

European motorway vignette catalogue: covered countries, each country's toll rules, today's prices.

OtherOther

Responded597 ms14 / 22
RealYield

UK buy-to-let maths: true net yield, cashflow, Section 24, stamp duty and area rental yields.

OtherOther

Responded597 ms14 / 22
RentalHunter

Filter-first rental search for India and Southeast Asian cities.

OtherData access / search

Responded597 ms14 / 22
Fast Fibre: fiber internet check

Check if fiber internet reaches a home in Hinesville & Midway, GA, and request a specialist's call.

OtherOther

Responded598 ms14 / 22
F4 Raise

Ranks VC firms for a startup from a short description, with similar companies each firm backed.

OtherOther

Responded598 ms14 / 22
Rizz Ipsum

Lorem ipsum filler text in Gen Z, Gen Alpha, Millennial and Gen X slang.

OtherOther

Responded598 ms14 / 22
BidCraft

Get bids from local US contractors: scope a job, then BidCraft contacts contractors for you.

OtherOther

Responded598 ms14 / 22
costheta

Verifiable physical randomness from cosmic-ray detections. Free beacon, paid signed decisions.

OtherOther

Responded599 ms14 / 22
Trending AI Papers — buy per-query in-session (hfpaperwatch)

Trending AI papers daily: ranks, summaries, repos. Be born in one call — free testnet funds.

OtherOther

Outdated check599 ms14 / 22
Piping Toolset Engineering Data

Engineering code-table data with citations: standard, edition, table, row and column.

OtherKnowledge & memory

Responded601 ms14 / 22
ASAPDevs

Read-only: ASAPDevs offers, case studies, blog search, pricing and contact (Polish software house).

OtherData access / search

Responded602 ms14 / 22
ASRM (AI Search Rank Monitor)

Check a website's AI readiness and answer AI visibility and GEO questions from ASRM's guides.

OtherData access / search

Responded602 ms14 / 22
au.com.bidit/registry

Does this retailer take offers, and does it price match? Verified answers, checked by a person.

OtherOther

Responded602 ms14 / 22
RebidPro contractor quotes

Real quotes from local US contractors for property jobs, ranked in ~48h, plus fair-price checks.

OtherOther

Responded603 ms14 / 22
Worder

Find and price AI voices from real, verified voice actors in ten languages. Read-only, no sign-up.

OtherOther

Responded604 ms14 / 22
Mode VC: Seed Stage Venture Capital Firms & Check Size Atlas

Search institutional seed venture capital firms, partner profiles, and valuation benchmarks on.

OtherData access / search

Responded604 ms14 / 22
Fabrica

US land for sale and any US parcel by address or APN: maps, Property checks, taxes, trust documents.

OtherFile & docs

Responded604 ms14 / 22
Mode VC Chart: Open Weights vs. Proprietary AI: The Gap Stays at 42 Points

Open weights briefly beat every proprietary model in early 2025 (deepseek-r1); today the best.

OtherOther

Responded607 ms14 / 22
WPFormation : WordPress en français

Articles WordPress en français et outils d'analyse de sites, de domaines et de plugins.

OtherOther

Responded609 ms14 / 22

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