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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976 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
ClevSec EU compliance tools

Deterministic, sourced EU compliance checks: NIS2, DORA, GDPR, Cyber Resilience Act and AI Act.

LegalKnowledge & memory

Responded78 ms13 / 22
secondlayer

Stacks chain data: contracts, events, transfers, subgraph scaffolds. Hosted with browser sign-in.

LegalKnowledge & memory

Outdated check80 ms13 / 22
P0: agent memory and utilities

Key-value memory without an account, UUID, hash, JWT, JSON validation, time and random

Finance & CryptoKnowledge & memory

Responded81 ms13 / 22
Avenbridge

Hosted MCP knowledge base: businesses forward emails and docs; buyers query them over MCP.

ProductivityKnowledge & memory

Responded84 ms13 / 22
CrimeMapsUK

Published UK police street-crime figures by postcode district, with a page link and citation.

Real Estate & PropertyKnowledge & memory

Responded87 ms13 / 22
RoRo Quantum

Read RoRo Academy quantum computing lessons and list RoRo Quantum's simulators and hardware.

EducationKnowledge & memory

Responded91 ms13 / 22
com.83blue.upload/agent-cloud-tools

Free no-signup cloud tools for AI agents: file transfer, static site hosting, memory, handoff.

Developer ToolsKnowledge & memory

Responded100 ms13 / 22
RAFSOFT.NET — Faktura VAT

Knowledge base, pricing, FAQ and KSeF 2.0 info for Faktura VAT 2026/2027 (Polish invoicing).

OtherKnowledge & memory

Responded102 ms13 / 22
Bedcount: student housing data by campus

IPEDS enrollment, college housing beds and bed gap at 693 US campuses, plus a loan sizer.

EducationKnowledge & memory

Responded102 ms13 / 22
Gwinnett Index

Gwinnett County, GA zoning and land use. Resolves an address to its governing jurisdiction.

LegalKnowledge & memory

Outdated check102 ms13 / 22
Catchmently

England's schools and nurseries: Ofsted, exam results, offers and last distance offered.

EducationKnowledge & memory

Responded103 ms13 / 22
Notematics

Maths lessons on an online whiteboard: solutions, worksheets, graphs and geometry, opened by a link

EducationKnowledge & memory

Responded106 ms13 / 22
Jawne Stawki

Salaries in Poland from public job ads: occupations, cities, contract types, experience.

LegalKnowledge & memory

Responded108 ms13 / 22
Abmahnexperte.de

Received a German Abmahnung (cease and desist letter)? Send it in chat for a free lawyer assessment.

LegalKnowledge & memory

Responded110 ms13 / 22
Aigine Redact

EU descriptive AI redaction (GDPR & OSL: 98.3% precision, 93.2% recall). Zero retention.

LegalKnowledge & memory

Responded112 ms13 / 22
PublicOffre — marchés publics français

French public procurement: open tenders, who wins contracts, company references, local finances.

LegalKnowledge & memory

Responded113 ms13 / 22
core.blue

Private, self-describing memory for agents: one house per customer, on a machine of its own.

Developer ToolsKnowledge & memory

Responded115 ms13 / 22
FactoGraph

Memory for AI agents: facts a person approved, each with a link, and answers that cite them.

Developer ToolsKnowledge & memory

Responded115 ms13 / 22
Code civil (France)

French Civil Code (LEGI) as executable rules: facts and a legal date in, answers with grounds out

LegalKnowledge & memory

Responded120 ms13 / 22
Cajon.pro

Drum schools map (Russia, Kazakhstan, Armenia, Belarus), song tempo and drum parts, cajons.

EducationKnowledge & memory

Responded120 ms13 / 22
WorkingMemory

Persistent personal memory for AI assistants — save, search, and recall across every MCP client.

Developer ToolsKnowledge & memory

Responded126 ms13 / 22
AnwaltX Passenger Rights & Legal Info (Germany/EU)

Free EU passenger rights calculators (flight, rail, bus, ferry), deadlines, legal glossary.

LegalKnowledge & memory

Responded130 ms13 / 22
Coursebox MCP by usefulapi

Create courses, sections and lessons, fill lessons with AI, and publish courses in Coursebox.

EducationKnowledge & memory

Outdated check131 ms13 / 22
Assay Systems procurement register

Public procurement register, 75 countries: suppliers, buyers, contracts, single-bid awards

LegalKnowledge & memory

Responded137 ms13 / 22

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