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.

Connect your agent

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
web2mcp

Zero-dependency Cloudflare Worker gateway turning websites and REST APIs into MCP tools.

Developer ToolsCode & DevOps

Responded72 ms15 / 22
Nightshift Labs: link, token & signature pre-checks

Paid x402 pre-checks for agents: phishing links, Base tokens, EIP-712 permits, calldata, DNS.

Finance & CryptoPayments & trading

Responded83 ms15 / 22
IntoDNS.ai DNS & Email Security Scanner

DNS and email security: check SPF, DKIM, DMARC, DNSSEC, DANE and build the records. 45 tools.

ProductivityCommunication & messaging

Responded156 ms15 / 22
DropTheHassle

Your AI publishes your site: free HTTPS link, or a .com for €19 that goes live with no DNS.

Developer ToolsCode & DevOps

Responded163 ms15 / 22
Agent Stack Directory

Search, inspect and compare infrastructure tools for AI agents from a checked directory.

Developer ToolsData access / search

Responded276 ms15 / 22
Email Deliverability Checker

Check SPF, DKIM, DMARC, blocklists, reverse DNS and email headers against Gmail/Yahoo sender rules.

ProductivityCommunication & messaging

Responded318 ms15 / 22
DomainKits

Search newly registered, expired, aged, active, deleted and for-sale domains, plus WHOIS and DNS.

Developer ToolsCode & DevOps

Responded371 ms15 / 22
Website Change Monitor & Deterministic Diff

Deterministic webpage change detection, hashes and text diffs for recurring monitoring via x402 MCP.

Developer ToolsMonitoring & observability

Responded513 ms15 / 22
Netmon (demo)

Public read-only demo of Netmon's network monitoring tools over a recorded snapshot.

OtherMonitoring & observability

Responded533 ms15 / 22
nimo

Monitoring that tells you the fix: uptime, Core Web Vitals, cron check-ins, Journey Watch.

Developer ToolsMonitoring & observability

Responded606 ms15 / 22
OSIR Domain Registrar

Register, renew, transfer, and manage domains, DNS, VPS, and email with 106 tools. By OSIR.

ProductivityCommunication & messaging

Responded666 ms15 / 22
Mnemom — Trust Ratings for AI Agents

Trust infrastructure for AI agents: read a verifiable Trust Rating, claim an identity, earn a badge.

Developer ToolsCode & DevOps

Responded959 ms15 / 22
GPU Rental Prices (Tanod)

Compare hourly GPU rental prices on AWS, Azure, Google Cloud and Akash, by chip, memory and region.

OtherKnowledge & memory

Responded1536 ms15 / 22
BlackVeil DNS & Email Security Scanner

DNS and email security scanner with 82 MCP tools for SPF, DMARC, DNSSEC, SSL, and brand audits.

ProductivityCommunication & messaging

Responded1718 ms15 / 22
Checkly MCP by usefulapi

Query Checkly synthetic monitoring — checks, statuses, results, alerts, reporting and dashboards.

Data & AnalyticsMonitoring & observability

Outdated check51 ms14 / 22
INWX MCP by usefulapi

Check domain availability, list domains and DNS zones, change DNS records in INWX.

Developer ToolsCode & DevOps

Outdated check55 ms14 / 22
io.github.vdionisopoulos/azure-vm-pricing

Azure VM sizes and USD list prices in 24 regions, updated weekly. Find, price and compare VMs.

Developer ToolsCode & DevOps

Responded57 ms14 / 22
Realtime Register MCP by usefulapi

Check domains, read domains and DNS zones, and update DNS zone records in Realtime Register.

Developer ToolsCode & DevOps

Outdated check57 ms14 / 22
NS1 Connect MCP by usefulapi

Read NS1 zones, records, monitors, data feeds and usage; create or update one DNS record.

Developer ToolsCode & DevOps

Outdated check57 ms14 / 22
deSEC MCP by usefulapi

Read deSEC domains, DNSSEC keys, zone files and RRsets; create or replace one DNS record set.

Developer ToolsCode & DevOps

Outdated check60 ms14 / 22
Play Systems MCP by usefulapi

Read e-invoices and payments, hosting packages, domains, DNS and web usage in Play Systems.

Finance & CryptoPayments & trading

Outdated check62 ms14 / 22
ClouDNS MCP by usefulapi

Read DNS zones, records, failover settings and monitoring checks; add TXT records in ClouDNS.

Developer ToolsMonitoring & observability

Outdated check65 ms14 / 22
FluxProof

Evidence-bearing public webpage monitoring with hashes, diffs, signed webhooks, REST, and MCP.

Developer ToolsMonitoring & observability

Responded70 ms14 / 22
Web Extract MCP Server

Page change monitoring, sitemap discovery, prompt-injection screening, clean markdown. Free preview.

Developer ToolsMonitoring & observability

Responded80 ms14 / 22

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