MCP HeartbeatTHE MCP OBSERVATORY
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Evidence for your next connection.

Independent measurements of remote MCP servers. Every observation has a timestamp.

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DiscoveryServer directory

Remote MCP servers

Find a server for your workflow, with connection evidence you can inspect.

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1431 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
Harmony

AI-native ITSM and ESM platform. resolve IT and HR requests inside Slack and Teams.

ProductivityCommunication & messaging

Requires authOutdated checkNot measured4 / 22
Help Scout MCP Server and API by Cotlet

Help Scout customer support shared inbox MCP server: reply to conversation, add note.

ProductivityCommunication & messaging

Requires authOutdated checkNot measured4 / 22
Hi Doctor

Online doctor consultations in the EU: health questionnaires, prescriptions and doctor messages.

OtherCommunication & messaging

Requires authNot measured4 / 22
Higgs Hub

Gmail, Outlook, Drive, OneDrive and calendars for AI agents. Many accounts, one endpoint, audit log.

ProductivityCommunication & messaging

Requires authOutdated checkNot measured4 / 22
Hilead

Signal-based B2B prospecting: find leads with buying intent, run email and LinkedIn outreach.

Marketing & SalesCommunication & messaging

Requires authNot measured4 / 22
HIVE — persistent agent conversations

Free agent messaging: shared/private threads, participant search and inbox. Bearer token; no OAuth.

ProductivityCommunication & messaging

Requires authNot measured4 / 22Not checked yet
Homonia

Agent-to-agent market and messaging: listings, public discussions and private conversations.

Developer ToolsCommunication & messaging

Requires authNot measured4 / 22Not checked yet
how.is domain & IP intelligence

Pay-per-call DNS, WHOIS, domain age, TLS, email auth, blocklists, IP intel. Free samples.

ProductivityCommunication & messaging

Requires authNot measured4 / 22Not checked yet
Ignix

Schedule posts, automate DMs and comments, and work one inbox across 14 social networks.

ProductivityCommunication & messaging

Requires authOutdated checkNot measured4 / 22
Inbox Triage

Connect Gmail, Outlook, iCloud, Yahoo and IMAP to AI apps in one MCP connection.

ProductivityCommunication & messaging

Requires authNot measured4 / 22
Inboxapp

Shared inbox and CRM for your team's DMs on LinkedIn, X, Instagram, WhatsApp, Telegram and email.

ProductivityCommunication & messaging

Requires authNot measured4 / 22
InboxFamily

Family email on your own domain: manage mailboxes and aliases, and read and sort your own mail.

ProductivityCommunication & messaging

Requires authNot measured4 / 22
InboxNest

Customer support email for founders: read, search, draft and reply to email across all your brands.

ProductivityCommunication & messaging

Requires authOutdated checkNot measured4 / 22
InboxVet

Verify emails (syntax, MX, SMTP mailbox, catch-all), test email DNS and check Spamhaus blocklists.

ProductivityCommunication & messaging

Requires authNot measured4 / 22Not checked yet
infobro AI tools directory

List your AI tool on infobro.ai: sign up by email code, submit or claim a listing, pay and track it.

ProductivityCommunication & messaging

Requires authNot measured4 / 22Not checked yet
Innmail for Agents

Email inbox for an AI agent: threads, send, reply, drafts, verification codes, calendar.

ProductivityCommunication & messaging

Requires authNot measured4 / 22Not checked yet
IntentWake Audience Intelligence

Enrich first-party lists with live intent, activity, and inbox signals for marketing and outreach.

Marketing & SalesCommunication & messaging

Requires authNot measured4 / 22Not checked yet
Invent

Your customer inbox, contacts, AI assistants, broadcasts and tables, from any AI app.

ProductivityCommunication & messaging

Requires authOutdated checkNot measured4 / 22
iotPush

Notifications you can answer: agents push to your phone and wait for your approval or reply.

Developer ToolsCommunication & messaging

Requires authNot measured4 / 22Not checked yet
ipv4.fr Network Tools

DNS, WHOIS, SSL, IP geolocation, email validation, DNSBL blacklist, HTTP headers, subnet calc.

ProductivityCommunication & messaging

Requires authNot measured4 / 22Not checked yet
Iridium: LinkedIn MCP Server

LinkedIn MCP for Claude, ChatGPT, Grok, Hermes: triage inbox, comment, find people, live profiles

ProductivityCommunication & messaging

Requires authNot measured4 / 22
Juncts

Read, draft and organize LinkedIn, X, Instagram, WhatsApp and Telegram DMs in one inbox.

ProductivityCommunication & messaging

Requires authNot measured4 / 22
JustEmails

Email hosting from your AI: read and send mail, add domains, check DNS and manage mailboxes.

ProductivityCommunication & messaging

Requires authNot measured4 / 22Not checked yet
Kajabi

Manage Kajabi from any MCP client — products, pages, contacts, offers, emails, analytics.

Data & AnalyticsCommunication & messaging

Requires authNot measured4 / 22

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