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
Quub hotel search and booking

Live hotel prices worldwide, sourced destination guides, prebooking. No key needed for reads.

TravelData access / search

Outdated check95 ms13 / 22
gluten-free.fr: catalogue, comparatifs et guides sans gluten

French gluten-free guide: product catalog, comparisons, ingredient checks and free guides.

E-commerceData access / search

Outdated check95 ms13 / 22
Garage Door Decision Kit by CLE Garage Doors

Garage-door quote checks, spring usage, winter planning and verified CLE knowledge search.

OtherData access / search

Outdated check95 ms13 / 22
Boken Japan: rural and small-town Japan travel data

Read-only travel data for every municipality in Japan, from bokenjapan.com

GovernmentData access / search

Outdated check96 ms13 / 22
busik.ch – Minibusfahrten Ukraine, Deutschland, Schweiz

Search minibus trips between Ukraine, Germany and Switzerland. Read-only.

OtherData access / search

Outdated check96 ms13 / 22
xdataapi: X (Twitter) data

Read-only public X (Twitter) data: profiles, tweets, threads, followers, search. Pay per result.

OtherData access / search

Outdated check96 ms13 / 22
P0: sanctions, KYB and payee checks

Sanctions screening, LEI lookup and payee checks for AI agents, pay per call over x402 or MPP

Finance & CryptoData access / search

Outdated check97 ms13 / 22
FortSu DE

Running shoe prices in Germany (fortsu.de): search, specs and minimum price history.

OtherData access / search

Outdated check98 ms13 / 22
vet.bio/biovet-mcp

Moscow vet clinic network (20 clinics, 24/7): clinics, live prices, slots, booking, triage. Russian

HealthcareData access / search

Outdated check98 ms13 / 22
Sami Swoi

Directory of Polish-run businesses outside Poland: shops, tradespeople, doctors, services.

E-commerceData access / search

Outdated check99 ms13 / 22
MCPFax Public-Data Utility API

One public fact when you have no API key: where, what time, what rate. 31 lookups.

OtherData access / search

Outdated check100 ms13 / 22
addrbook directory

Look up AI agents, MCP servers and x402 APIs: whether they answer, how they ask to be paid.

Finance & CryptoData access / search

Outdated check101 ms13 / 22
whatevertrips

Cheap flights in Europe and multi-city trip plans from cached airline prices, with shareable links.

TravelData access / search

Outdated check102 ms13 / 22
com.787daily/mcp

Puerto Rico news summaries and live island conditions from 787daily, read-only over MCP.

MediaData access / search

Outdated check103 ms13 / 22
SiteLove — Serious Dating for Long-Term Relationships

Semantic search of dating profiles for long-term relationships by age, city and lifestyle.

Developer ToolsData access / search

Outdated check103 ms13 / 22
Irfan Aslam Tools

78 free tools: Saudi salary, GOSI, VAT, Nitaqat, traffic fines, HSE, developer and SEO checks.

Marketing & SalesData access / search

Outdated check103 ms13 / 22
Dercora

Search products from independent Shopify stores: prices, merchant offers and buy links.

E-commerceData access / search

Outdated check103 ms13 / 22
Book a Sponsor

Find brands that already sponsor newsletters like yours, with sponsorship rates.

Marketing & SalesData access / search

Outdated check103 ms13 / 22
app.allagents/directory

Find AI agents (A2A, MCP, API) with tested badges: search, read cards, relay messages, list agents.

Developer ToolsData access / search

Outdated check103 ms13 / 22
BitSpire

Search and read bitspire.ch: .NET development, AI agents, trainings and blog by BitSpire GmbH

Developer ToolsData access / search

Outdated check106 ms13 / 22
OctoTrip Rental Cars

Free, no-login rental car search with real-time pricing.

OtherData access / search

Outdated check109 ms13 / 22
DatoQA — Official Public Holidays

Government and OpenHolidays calendars: regional scope, multilingual names, dated sources and gaps.

GovernmentData access / search

Outdated check109 ms13 / 22
RottenAds affiliate offers

Search CPL/CPA affiliate offers (telehealth, finance, insurance); apply as publisher or advertiser.

Marketing & SalesData access / search

Outdated check110 ms13 / 22
Manchester Tonight

What's on in Manchester: search gigs, club nights, theatre, events and venues. Read-only, no auth.

OtherData access / search

Outdated check111 ms13 / 22

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