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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18175 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
ShipStatic

Deploy static websites, landing pages, and prototypes instantly. Free, no account needed.

Developer ToolsCode & DevOps

Responded111 ms15 / 22
Web Validator by DigestSEO

Audit public webpages and supplied markup for HTML, CSS, SEO, JSON-LD, and link issues.

Developer ToolsCode & DevOps

Responded112 ms15 / 22
coldHat

Put on anyone's AI rules by GitHub username: fetches their hat.md and its hat code.

Developer ToolsCode & DevOps

Responded114 ms15 / 22
Ply UI

List, search, and inspect Ply Angular + Tailwind copy-in components.

Developer ToolsCode & DevOps

Responded114 ms15 / 22
Codex Reset

Read-only Codex usage-limit reset data: 24/48h reset forecast, dated reset record, service status.

Developer ToolsCode & DevOps

Responded115 ms15 / 22
CyberMax Data

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

Developer ToolsCode & DevOps

Responded115 ms15 / 22
Stackhal

Outside-in DNS, email security, SEO, GEO and app-link checks plus developer utilities.

Developer ToolsCommunication & messaging

Responded115 ms15 / 22
OpenNodes

Discover verified AI inference nodes, get the best node+model per task, pre-price chains.

Developer ToolsCode & DevOps

Responded116 ms15 / 22
MCP Registry Search: Find, Discover & Install MCP Servers & Tools | Directory, Catalog, Marketplace

MCP registry & directory: search, find & install 31k+ MCP servers & tools. Catalog and marketplace.

Developer ToolsData access / search

Responded116 ms15 / 22
Pryx

Buying advice for the French market: which appliance or electronics to buy, with live prices.

Developer ToolsCode & DevOps

Responded116 ms15 / 22
OwnerSpec

Cited home water treatment answers, part matching and sizing calculators for AI agents.

Developer ToolsCode & DevOps

Responded116 ms15 / 22
IleZa.pl

Editorial fair prices for products in Poland, plus a Polish net salary and tax calculator.

Developer ToolsCode & DevOps

Responded117 ms15 / 22
DeepStack: Independent analysis of the AI economy

Where informed investors disagree, the evidence each side stands on, and the date that settles it.

Developer ToolsCode & DevOps

Responded118 ms15 / 22
Uganda Online Business Directory

Search a Ugandan business directory for businesses and services by keyword, category, or district

Developer ToolsCode & DevOps

Responded118 ms15 / 22
MatrixCalculator.net

Exact matrix calculations with step-by-step results for six core matrix operations.

Developer ToolsCode & DevOps

Responded119 ms15 / 22
PublicWWW

Search the source code (HTML, JavaScript, CSS) of web pages.

Developer ToolsData access / search

Responded119 ms15 / 22
Innerloop

Register agents, submit locally signed reflections, and read public Innerloop entries.

Developer ToolsCode & DevOps

Responded121 ms15 / 22
ICANN registrar accreditation status

Is a domain registrar still ICANN-accredited, and has ICANN acted against it? 4,500+ registrars.

Developer ToolsCode & DevOps

Responded122 ms15 / 22
Packetrove

Open-source IP address and CIDR tools for network calculations and public IP lookup.

Developer ToolsCode & DevOps

Responded122 ms15 / 22
AppScreenshoot MCP

Read-only MCP for App Store and Google Play screenshot templates and current size requirements.

Developer ToolsCode & DevOps

Responded125 ms15 / 22
ProofFetch — Cited Web Evidence

Web pages your agent can quote: 1,000 full fetches a month free, no card, then $0.01 a page.

Developer ToolsCode & DevOps

Responded129 ms15 / 22
Livestock Counterparty Guard

USDA P&S checks for livestock buyers, dealers, agencies and packers before sale or onboarding.

Developer ToolsCode & DevOps

Responded130 ms15 / 22
ELC Conference 2027: tickets, perks, partnerships

ELC Conference 2027, Prague: tickets, attendee perks and partnership quotes from your AI assistant.

Developer ToolsCode & DevOps

Responded131 ms15 / 22
Company & Macro Data (x402)

Company registers (17 countries + LEI), KYB sanctions check (EU/OFAC/UK), FX, rates, inflation.

Developer ToolsCode & DevOps

Responded132 ms15 / 22

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