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
Rewardful MCP by usefulapi

Browse affiliates, referrals, commissions and payouts, and set up campaigns and affiliates.

Marketing & SalesData access / search

Outdated check80 ms14 / 22
Mettakin

First-person meditation experiences shared by humans. Search, read and cite them.

OtherData access / search

Responded82 ms14 / 22
Knowledge for Agents

Search real problems, solutions, failed approaches and observed outcomes shared by AI agents.

Developer ToolsData access / search

Responded83 ms14 / 22
FURRINGLINE

Thai building materials: product search, prices before VAT, stock and material calculators.

Finance & CryptoData access / search

Responded83 ms14 / 22
Searchanise MCP by usefulapi

Search products, categories and pages, get suggestions, and delete index items in Searchanise.

Developer ToolsData access / search

Outdated check83 ms14 / 22
XCOPYBook

Read-only XCOPYBook: book chapters, search, collector profiles and the XCOPY works registry.

OtherData access / search

Responded84 ms14 / 22
Tier 1 Protocol

Search files while they stay encrypted: the problem DARPA chased for a decade. Exact quotes back.

OtherData access / search

Outdated check86 ms14 / 22
BlinkCodes catalog

Read-only catalog of gift cards, service top-ups and travel eSIMs sold by BlinkCodes.

TravelData access / search

Responded87 ms14 / 22
GrowthKit Revenue Intelligence

Sales intelligence for B2B SMEs — lead scoring, ICP fit, CRM enrichment & writeback.

Marketing & SalesData access / search

Outdated check87 ms14 / 22
European IP Data & Analytics — IPRATE

Free anonymous selections from released European IP profiles, rankings, and market statistics.

Data & AnalyticsData access / search

Responded93 ms14 / 22
kari catalog

kari shoe and accessory stores in Russia, Kazakhstan, Belarus: search, prices, stores, size stock

Finance & CryptoData access / search

Responded96 ms14 / 22
EmojiDig Emoji Search

Search every Unicode emoji by meaning or slang and get the exact character, name and codepoints.

OtherData access / search

Responded99 ms14 / 22
Ausschreibungsagenten Tender Search

Search public procurement notices from 17 sources across Germany, the EU and the UK. Read-only.

OtherData access / search

Responded100 ms14 / 22
Tier 1 Protocol

Search files while they stay encrypted: the problem DARPA chased for a decade. Exact quotes back.

Developer ToolsData access / search

Responded100 ms14 / 22
Agentic Web Wiki — standards reference, probe, validate, template

Look up 133 agentic-web standards, live-probe any domain, validate manifests, generate boilerplate.

OtherData access / search

Outdated check100 ms14 / 22
a4sx sessions

Search reviewed coding-agent sessions on a4sx anonymously; sign in (OAuth) to load or save sessions.

Developer ToolsData access / search

Responded101 ms14 / 22
wwhois.ru domain tools

WHOIS/RDAP lookup, IP geolocation and Punycode conversion. 1400+ TLDs incl. IDN. No API key.

Developer ToolsData access / search

Outdated check101 ms14 / 22
Jewelry by Sweet Pea Products

Live fine-jewelry catalog: search, product lookup, compatible chains, size/length variants, store po

Developer ToolsData access / search

Responded102 ms14 / 22
app.nomadpoint/travel-facts

No-auth: save a planned trip as a claimable itinerary, visa rules per passport, Schengen 90/180

TravelData access / search

Outdated check102 ms14 / 22
Raisely MCP by usefulapi

Read campaigns, donations, profiles and supporters; record offline donations and upsert users.

Marketing & SalesData access / search

Outdated check104 ms14 / 22
Dhamma.Gift — Pāli Canon

Search and read the Pāli Canon: Pāli root texts with Russian and English translations.

OtherData access / search

Responded105 ms14 / 22
Sophia Commons

Search 4,500+ Waldorf schools, biodynamic farms, Camphill communities and anthroposophical events.

EducationData access / search

Outdated check105 ms14 / 22
BezBaseina

Latvian property portal: search rentals, sales & nightly stays; market stats; owner tools via OAuth.

OtherData access / search

Outdated check105 ms14 / 22
CyberMax Data

Free US data lookups: ZIP demographics, CISA KEV/EPSS CVEs, domain rank, county spending, recalls.

OtherData access / search

Responded106 ms14 / 22

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