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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1424 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
ai.oddsockets/remote-mcp

Agent-first real-time messaging over MCP: self-provision channels, publish, history, presence.

Developer ToolsCommunication & messaging

Requires authNot measured4 / 22Not checked yet
ai.purrplan/purrplan

Social media scheduler your AI agent can drive: plan, publish, inbox, analytics on 12+ networks.

Marketing & SalesCommunication & messaging

Requires authOutdated checkNot measured4 / 22
ai.sentfrom/mcp

Email for AI agents: inboxes, send/reply/forward, search, threads, webhooks — 21 SentFromAI tools.

ProductivityCommunication & messaging

Requires authNot measured4 / 22Not checked yet
app.sendar/mcp

Sendar application email: inspect setup, preview, send and check delivery.

ProductivityCommunication & messaging

Requires authOutdated checkNot measured4 / 22
co.instantreply/mcp

AI access to InstantReply WhatsApp, Instagram, and Messenger inboxes, with browser pairing.

ProductivityCommunication & messaging

Requires authOutdated checkNot measured4 / 22
com.anymailmcp/mail

Read, send, organize, watch email on any IMAP mailbox: Gmail, iCloud, OVH, Zoho, Fastmail + CalDAV.

ProductivityCommunication & messaging

Requires authOutdated checkNot measured4 / 22
com.blueticked/blueticked

Send WhatsApp, SMS and email for South African businesses: contacts, campaigns, templates, webhooks

ProductivityCommunication & messaging

Requires authOutdated checkNot measured4 / 22
com.businessmcp/data-api

Company, IP-to-company, email and website data for agents, prepaid per call.

ProductivityCommunication & messaging

Requires authOutdated checkNot measured4 / 22
com.callingly/callingly

Lets AI agents get leads on the phone: call, send SMS, and schedule callbacks for sales teams.

Marketing & SalesCommunication & messaging

Requires authOutdated checkNot measured4 / 22
com.compliapi/screening

OFAC and global sanctions screening: crypto addresses, emails, websites, IDs, countries, VPN, geo

Finance & CryptoCommunication & messaging

Requires authNot measured4 / 22Not checked yet
com.corapilot/whatsapp

Let Claude or ChatGPT search, read and send your WhatsApp messages over MCP. OAuth sign-in.

Developer ToolsCommunication & messaging

Requires authOutdated checkNot measured4 / 22
com.curviate/mcp

LinkedIn actions for AI agents: search, messaging, posts and invites, as hosted MCP tools.

Developer ToolsCommunication & messaging

Requires authNot measured4 / 22
com.fadehost/mcp

Manage FadeHost game servers, Discord bots and VPS: console, stats, backups, logs, lifecycle.

OtherCommunication & messaging

Requires authNot measured4 / 22Not checked yet
com.flo-voice1/agent-identity-mcp

Give an AI agent a throwaway email and phone number to test signup/verification flows end to end.

ProductivityCommunication & messaging

Requires authOutdated checkNot measured4 / 22
com.hedwig-ai/hedwig

Read, arrange, and build agents on your Hedwig email board from any AI client. Nothing ever sends.

ProductivityCommunication & messaging

Requires authOutdated checkNot measured4 / 22
com.leadsapp/leadsapp

Search 136M+ US/CA B2B contacts free, verify emails free, get compliance verdicts. Pay per reveal.

ProductivityCommunication & messaging

Requires authNot measured4 / 22Not checked yet
com.mailopoly/mailopoly

Your unified inbox — everything that reaches you, understood and actionable from your AI assistant.

ProductivityCommunication & messaging

Requires authOutdated checkNot measured4 / 22
com.mobile-text-alerts/sms-mcp

The Mobile Text Alerts SMS MCP server enables your AI to send SMS messages & manage contacts

ProductivityCommunication & messaging

Requires authOutdated checkNot measured4 / 22
com.proscendia/google-workspace

Permissioned access to Gmail, Drive and Calendar via the user's own Google account

ProductivityCommunication & messaging

Requires authOutdated checkNot measured4 / 22
com.proscendia/microsoft-365

Permissioned access to Outlook, OneDrive and Teams via the user's own Microsoft account

ProductivityCommunication & messaging

Requires authOutdated checkNot measured4 / 22
com.selfping/selfping

SMS alerts for AI agents and scripts. Text your own phone and read replies. API key required.

ProductivityCommunication & messaging

Requires authNot measured4 / 22Not checked yet
com.themineworks/lead-generation-mcp

B2B and local lead gen: verified emails, site contacts, Maps and Yellow Pages leads.

Marketing & SalesCommunication & messaging

Requires authOutdated checkNot measured4 / 22
com.whatsmcp/whatsmcp

WhatsApp for AI agents — your own number or the official Cloud API: messages, media, templates.

Developer ToolsCommunication & messaging

Requires authOutdated checkNot measured4 / 22
dev.agentsim/mcp

Control plane for agent auth walls. Connector 0 handles SMS OTP with US test numbers.

ProductivityCommunication & messaging

Requires authOutdated checkNot measured4 / 22

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