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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1448 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
io.github.pavel-tashev/email-verifier

Verify email addresses in bulk: syntax, domain, MX, disposable and role addresses, SPF and DMARC

Developer ToolsCommunication & messaging

Requires authOutdated checkNot measured3 / 22
io.github.pavel-tashev/website-change-watcher

Detect what changed on a page, sitemap or feed since the last check, with a diff and email alert

Developer ToolsCommunication & messaging

Requires authOutdated checkNot measured3 / 22
io.github.retep-tru/maeil

Invite someone to a calendar event by phone number and get their real email back when they accept.

ProductivityCommunication & messaging

Requires authOutdated checkNot measured3 / 22
io.github.SumCodeAI/chatgenius

ChatGenius tools: Instagram, Facebook, WhatsApp and SMS inbox, contacts, bookings, flows, posts.

ProductivityCommunication & messaging

Requires authOutdated checkNot measured3 / 22
io.wonderchat/wonderchat

AI help desk: set up a website support agent, train it, and work the ticket inbox.

ProductivityCommunication & messaging

Requires authOutdated checkNot measured3 / 22
org.echoempire/web-tools

Web extraction MCP: page content, metadata, articles, contacts, email checks, URL probes.

ProductivityCommunication & messaging

Requires authNot measured3 / 22Not checked yet
Agent Harbour

Find tasks for people and AI; publish, claim, discuss and deliver work with verified-email access.

Developer ToolsCommunication & messaging

Requires authNot measured3 / 22Not checked yet
Agent Outbox for Telegram

Let AI assistants post to your Telegram chats, groups and channels. Not affiliated with Telegram.

Developer ToolsCommunication & messaging

Requires authOutdated checkNot measured3 / 22
AgentBrink

Give your AI agent an identity: its own email, webhook, repo, secrets vault, memory and skills.

ProductivityCommunication & messaging

Requires authNot measured3 / 22Not checked yet
AgenTrux

Authenticated event topics for agent-to-agent messaging with per-agent credentials and audit logs.

Developer ToolsCommunication & messaging

Requires authNot measured3 / 22
AI Email Triage Tool & Reply Draft Helper

Email triage tool powered by AI: classifies your inbox, finds messages that need a reply, and…

ProductivityCommunication & messaging

Requires authNot measured3 / 22Not checked yet
Airbnb Professional Host Leads

Airbnb professional hosts and property managers by city with business email, phone and company name

TravelCommunication & messaging

Requires authNot measured3 / 22Not checked yet
andque Agent Data Tools

Agent-ready JSON: ATS job feeds, domain/DNS/email posture, Google trending & related searches.

ProductivityCommunication & messaging

Requires authNot measured3 / 22Not checked yet
ApiOne B2B Enrichment (GCC and MENA)

B2B company, people and email enrichment with cited sources, built for GCC and MENA companies.

Developer ToolsCommunication & messaging

Requires authNot measured3 / 22Not checked yet
Autopo

Run your AI-run company from Claude Code, Codex, Cursor or ChatGPT: inbox, tasks, team, Studio.

Developer ToolsCommunication & messaging

Requires authNot measured3 / 22Not checked yet
Booking.com Professional Host Leads

Booking.com professional hosts and hotel operators with emails, phones, company and VAT number

TravelCommunication & messaging

Requires authNot measured3 / 22Not checked yet
Bubbl

AI teammate for tasks: builds your list from meetings, email and chats, and checks off done work.

ProductivityCommunication & messaging

Requires authOutdated checkNot measured3 / 22
Bulk Email Verifier & MX Check

Email list check: syntax, domain, MX records, disposable/role addresses (DNS level). Winters Works.

Developer ToolsCommunication & messaging

Requires authNot measured3 / 22Not checked yet
CacheBash

Let your AI sessions talk to each other — messaging, tasks, sessions, and alerts

Developer ToolsCommunication & messaging

Requires authNot measured3 / 22Not checked yet
CallUpOnIt

Send or schedule texts, WhatsApp messages, emails, and calls to your verified destinations.

Developer ToolsCommunication & messaging

Requires authOutdated checkNot measured3 / 22
Cargo

Find and verify work emails, enrich companies and contacts, score leads and sync to your CRM.

Marketing & SalesCommunication & messaging

Requires authOutdated checkNot measured3 / 22
CatchMyCall

Place calls, send WhatsApp messages, and read call records, contacts, leads and campaigns

Marketing & SalesCommunication & messaging

Requires authNot measured3 / 22
Chatfuel

Create AI agents that answer customers on WhatsApp, Instagram, Messenger, TikTok and web chat.

Developer ToolsCommunication & messaging

Requires authNot measured3 / 22
Chatty: WhatsApp Business

Your WhatsApp Business inbox in Claude or ChatGPT: who's waiting, follow-ups and replies.

ProductivityCommunication & messaging

Requires authNot measured3 / 22

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