MCP HeartbeatTHE MCP OBSERVATORY
Public workspace

Explore

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

1568 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
AgentMash

All your bookmarks in one library. Share them with your AI agents. Read-only search over your saves.

ProductivityData access / search

Requires authNot measured6 / 22Not checked yet
asms

Phone numbers for AI agents: SMS verification codes and rented numbers that receive SMS.

ProductivityCommunication & messaging

Requires authNot measured6 / 22Not checked yet
Atmark

Email for AI agents: its own address, not your Gmail. Invite-only; requires an agent token.

ProductivityCommunication & messaging

Requires authNot measured6 / 22Not checked yet
Bird

Send and receive across email, SMS, WhatsApp, and voice. One API, one contract.

ProductivityCommunication & messaging

Requires authOutdated checkNot measured6 / 22
BlitzAPI

Search and enrich B2B companies and people: verified work emails, US phone numbers, job postings.

ProductivityCommunication & messaging

Requires authNot measured6 / 22Not checked yet
CallMCP — Phone Call MCP Server

Phone call MCP server: AI agents place and answer real calls, text, email and WhatsApp via KaiCalls.

ProductivityCommunication & messaging

Requires authNot measured6 / 22Not checked yet
Graphlog Career

The career management plugin for your own AI assistant: CVs, cover letters, interviews and more.

ProductivityFile & docs

Requires authNot measured6 / 22
Harny Actions

Book meetings on each user's own calendar from inside your app. Also email and Slack posts; undo.

ProductivityCommunication & messaging

Requires authNot measured6 / 22Not checked yet
Harny Connected Accounts

Connect a user's Google Calendar, Gmail, Drive, Notion or Slack so your agent reads their data.

ProductivityCommunication & messaging

Requires authNot measured6 / 22Not checked yet
LMCP

Mac & Windows: let ChatGPT, Claude & Cursor use your email, calendar, iMessage, Teams, files.

ProductivityCommunication & messaging

Requires authOutdated checkNot measured6 / 22
Multi Calendar

Outlook.com, Microsoft 365, Google, iCloud, CalDAV: free time, events, invites, bookings, polls.

ProductivityCommunication & messaging

Requires authOutdated checkNot measured6 / 22
Multi Mail

Gmail, Outlook, Hotmail, Microsoft 365, iCloud, Fastmail, other IMAP mailboxes: search, read, send.

ProductivityCommunication & messaging

Requires authOutdated checkNot measured6 / 22
com.ainetcafe/netcafe-memory

Cross-session, cross-device memory for your agent: remember and recall notes. No key to start.

ProductivityKnowledge & memory

UnreachableNot measured5 / 22
com.ainetcafe/netcafe-tables

Messy spreadsheets in, clean checkable tables out. Every result carries its arithmetic proof.

ProductivityFile & docs

UnreachableNot measured5 / 22
dev.mailkite/mailkite

Send email, manage domains, DNS, webhooks, templates, and inbound routing on MailKite

ProductivityCommunication & messaging

Requires authNot measured5 / 22
io.github.anima-labs-ai/anima

Give your AI agent an identity it owns: email inbox, US phone number, SMS, voice, and a vault.

ProductivityCommunication & messaging

UnreachableNot measured5 / 22
Aworkado

Live remote and hybrid jobs from employers' career pages. Free, read-only, no account.

ProductivityFile & docs

UnreachableNot measured5 / 22
DMARC Shark — Email DNS Checker

Check a domain's public SPF, DMARC, MX and DKIM DNS records on demand. No account required.

ProductivityCommunication & messaging

Outdated checkNot measured5 / 22
GoAI Moat Cross-Border Tax Compliance

VAT registration, US sales-tax nexus and filing calendars for cross-border sellers

ProductivityFile & docs

Outdated checkNot measured5 / 22
Outdated checkNot measured5 / 22
GoAI Moat Email Person Lookup

Reverse email lookup: find the person behind an email (name, title, company).

ProductivityCommunication & messaging

Outdated checkNot measured5 / 22
Grounders MCP

Multiple Google accounts (Gmail, Calendar, Drive, Contacts, Tasks) in one Claude connector.

ProductivityCommunication & messaging

Outdated checkNot measured5 / 22
MagicInterview

Live interview and meeting coaching with saved context and Notion sync. Audio runs in the full app.

ProductivityFile & docs

Requires authNot measured5 / 22
ai.openhelm/email-outreach

Goal-directed email outreach: research, draft, send, triage replies. Real data, never fabricated.

ProductivityCommunication & messaging

Requires authOutdated checkNot measured5 / 22

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