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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18395 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
Ainovaq

Ainovaq AI venture studio: list services, get service details, search the blog, contact info.

Developer ToolsData access / search

Outdated check2327 ms15 / 22
MkSaaS Docs

Search published MkSaaS documentation. Read-only and public.

Developer ToolsFile & docs

Outdated check2350 ms15 / 22
AIHOT

Chinese AI news: search topics, explore hot events, and read daily, weekly and monthly briefs.

Developer ToolsCode & DevOps

Outdated check2422 ms15 / 22
FateTell

Deterministic BaZi (Four Pillars) charts, Chinese almanac and saved FateTell charts.

Developer ToolsCode & DevOps

Outdated check2535 ms15 / 22
NOT FOR HUMANS

Public NFH knowledge, ownership epochs, versioned learning, Odd Jobs, and unsigned preparation.

Developer ToolsCode & DevOps

Outdated check2569 ms15 / 22
QRdx

Design styled QR codes and build Wi-Fi, contact and SMS payloads. Most tools need no API key.

Developer ToolsCode & DevOps

Outdated check2627 ms15 / 22
io.github.richard-kim-79/popup-mcp

Popup (popup2026.com): search & read public pages with no auth; create shareable web pages via AI.

Developer ToolsCode & DevOps

Responded2907 ms15 / 22
ComplianceCN — toys, batteries, cosmetics, food contact: CE, GPSR, UN 38.3, CPC/GCC and more

Source-cited EU/UK/US/AU market-access checks for Amazon and cross-border product compliance.

Developer ToolsCode & DevOps

Outdated check2926 ms15 / 22
WHOIS

Query WHOIS/RDAP information for domains, IP addresses, CIDR prefixes and ASNs. Self-hostable.

Developer ToolsCode & DevOps

Outdated check3312 ms15 / 22
nidhipati — proof of spend for AI agents

Proof-of-spend and reserve checks for AI agents: receipts, spend audit, NAV, reconciliation.

Developer ToolsCode & DevOps

Outdated check3379 ms15 / 22
io.github.wygogogo19/robotbase-content

Agent MCP: 35 tools — social hot lists, attention trends, 80k+ books, 17 web tools.

Developer ToolsCode & DevOps

Responded3740 ms15 / 22
Redocly

Search and read the Redocly product docs, guides and blog on redocly.com, and report a wrong page.

Developer ToolsData access / search

Outdated check3906 ms15 / 22
TamingDNS

Check SPF, DKIM, DMARC, MX, MTA-STS, TLS-RPT, BIMI, DANE, DNSSEC and TXT; read headers and bounces.

Developer ToolsCode & DevOps

Outdated check6094 ms15 / 22
ChangeThisFile

1,000+ conversion routes plus translate, extract tables, compress. 25 free/month, then a free key.

Developer ToolsCode & DevOps

Outdated check6341 ms15 / 22
AgentBreakWatch

Audit AI Agent SDKs and MCP servers for breaking changes, schema drift, and migration fixes.

Developer ToolsCode & DevOps

Outdated check6587 ms15 / 22
Aziel Runtime

Governed MCP: agent audit, provenance, deterministic checks, and receipt-backed FragGate execution.

Developer ToolsCode & DevOps

Outdated check6953 ms15 / 22
Sense2 Promotional Products

29 read-only tools: search 4,000+ Australian promotional products, live pricing, quotes, edits.

Developer ToolsCode & DevOps

Outdated check7629 ms15 / 22
Pipeworx

Live data gateway for AI — 3,300+ tools across 750+ sources, with citations

Developer ToolsCode & DevOps

Responded62 ms15 / 22
Swapi

SWAPI MCP — wraps the Star Wars API (free, no auth)

Developer ToolsCode & DevOps

Responded66 ms15 / 22
Squiggle

Squiggle MCP — AFL fixture / results / tips.

Developer ToolsCode & DevOps

Responded66 ms15 / 22
Perilpulse

PerilPulse MCP — per-property multi-peril risk scores (perilpulse.com)

Developer ToolsCode & DevOps

Responded66 ms15 / 22
Openpowerlifting

openpowerlifting -- powerlifting competition results from the OpenPowerlifting project's…

Developer ToolsCode & DevOps

Responded66 ms15 / 22
Ny Omig Exclusions

New York State OMIG Medicaid provider exclusion screening — fleet #2788.

Developer ToolsCode & DevOps

Responded66 ms15 / 22
Mn Drug Price Transparency

Minnesota manufacturer drug price-growth and new-drug-launch disclosures — the Minnesota half of…

Developer ToolsCode & DevOps

Responded66 ms15 / 22

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