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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619 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
cloud.fetcher/fetcher

The web capability layer for AI agents: render, extract, DNS, SSL, WHOIS & more via x402.

Finance & CryptoPayments & trading

Outdated check56 ms12 / 22
PageWatch - page-to-data extraction and change monitoring

Extract prices, lists, tables, events from static pages and watch them for changes.

OtherMonitoring & observability

Outdated check58 ms12 / 22
Clawhard Dev Tools

Exact developer checks: email DNS, Supabase RLS, cron, JSON, contrast, time zones, npm/PyPI packages

Developer ToolsDatabase

Outdated check62 ms12 / 22
Stamp

Check a domain's SPF, DKIM, DMARC and MX from live DNS, the Gmail/Yahoo rules, and fix records.

ProductivityCommunication & messaging

Outdated check70 ms12 / 22
Outdated check83 ms12 / 22
Vietnis Cloud Cost Calculator

Cloud cost estimates by region: Google Workspace, Microsoft 365, Azure, Google Cloud (USD/VND).

Developer ToolsCode & DevOps

Outdated check83 ms12 / 22
MoneyTools Tools

25 read-only agent utilities: token safety, approvals, tx decode, EIP-712 risk, DNS, time; free tier

Developer ToolsCode & DevOps

Outdated check90 ms12 / 22
SimpleACME DNS-01 setup

Read-only DNS-01 setup guides and templates for Traefik, win-acme, Certbot and custom hooks.

Developer ToolsCode & DevOps

Outdated check90 ms12 / 22
TidyTools Free Web Data

45 free keyless web tools: AI extract, OCR, transcribe, SEO, DNS, contacts. Strict daily limits.

Developer ToolsAI / LLM tooling

Outdated check112 ms12 / 22
io.github.XogZ3/botoi-mcp

49 developer tools via MCP: DNS, WHOIS, IP lookup, JWT, hashing, QR, and more.

Developer ToolsCode & DevOps

Outdated check119 ms12 / 22
PulseWatch public knowledge

Public PulseWatch offers and monitoring guides. No private customer data or monitor controls.

OtherMonitoring & observability

Outdated check120 ms12 / 22
Hivex: .si names, DNS and WHOIS

Find and check free .si names (600,000+ indexed), and look up DNS and WHOIS for any domain.

Developer ToolsData access / search

Outdated check130 ms12 / 22
Human Task Desk — Ron Long

Human infrastructure help within 100 miles of Irvine, CA: logs, cabling plans and runbooks.

OtherAI / LLM tooling

Outdated check132 ms12 / 22
Domain Liveness

Is this business's website still there? Checks apex and www, and DNS separately from HTTP.

Developer ToolsCode & DevOps

Outdated check141 ms12 / 22
Nymwell

Look up and buy domain names: live prices, any domain's public records, renewals, transfers and DNS.

GovernmentData access / search

Outdated check184 ms12 / 22
Crosswire - payment infrastructure pricing, coverage and stack design

Indicative pricing, coverage and stack design for high-risk and crypto payment infrastructure.

Finance & CryptoPayments & trading

Outdated check204 ms12 / 22
io.github.venomseven/nslookup

DNS lookups, health reports, SSL certs, security scans, GEO scoring, uptime checks

Developer ToolsMonitoring & observability

Outdated check219 ms12 / 22
ai.kaiv/dns-check

Live DNS lookups for agents: A/MX/TXT/SPF/CNAME/PTR with TTLs and DNSSEC, via Google Public DNS.

Developer ToolsData access / search

Outdated check238 ms12 / 22
ai.kaiv/is-it-down

Is GitHub, npm, Cloudflare or your AI provider down right now? 20 status pages, one call.

Developer ToolsCode & DevOps

Outdated check252 ms12 / 22
GoMain

Domain availability and prices from 40+ registrars, name checks, DNS setup, and a domain broker

Developer ToolsCode & DevOps

Outdated check275 ms12 / 22
io.github.robertoyanguas-ops/domain-osint-mcp

Inspects live IPv4/IPv6 DNS resolution, TLS certificate issuer/expiry, and HTTP security grade.

Developer ToolsCode & DevOps

Outdated check398 ms12 / 22
StableDomains

USDC/USDT domain registrar on 7 chains, card checkout for people, expiring drops, WHOIS/DNS tools.

Finance & CryptoPayments & trading

Outdated check411 ms12 / 22
Cognita

Passive OSINT and security recon: DNS, TLS, email posture, IP reputation, CVE/KEV, CT logs.

ProductivityCommunication & messaging

Outdated check434 ms12 / 22
io.github.robertoyanguas-ops/email-verify-mcp

Validates email syntax, disposable/burner provider status, role accounts, and live DNS records.

Developer ToolsCommunication & messaging

Outdated check463 ms12 / 22

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