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

1584 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
Botmail

Your agent's own email address: read, search, send, reply, draft and wait for mail.

ProductivityCommunication & messaging

Requires authOutdated checkNot measured4 / 22
BotsInbox — Email Inboxes for AI Agents

Free email inboxes for AI agents: self sign-up, receive email and verification codes.

ProductivityCommunication & messaging

Requires authNot measured4 / 22Not checked yet
BounceLayer Email Verification

Check if an email address is real before you send, with a plain-English reason for every result.

ProductivityCommunication & messaging

Requires authNot measured4 / 22Not checked yet
BounceWatch Signal Intelligence

Millions of dated buying and momentum signals: who raised, who's hiring, what changed and when

ProductivityFile & docs

Requires authNot measured4 / 22Not checked yet
BuildBase Console

Manage BuildBase organizations, members, content, email, workflows and settings as yourself.

ProductivityCommunication & messaging

Requires authNot measured4 / 22
Buildertrend MCP Server and API by Cotlet

Buildertrend home builder project management MCP server: get schedule, create daily log.

ProductivityFile & docs

Requires authOutdated checkNot measured4 / 22
Busymail

Read, organise and send from your existing email accounts. Nothing sends without your approval.

ProductivityCommunication & messaging

Requires authNot measured4 / 22Not checked yet
CalcForms

Turn a spreadsheet into a quote calculator by chatting. Every submission arrives with the math done.

ProductivityFile & docs

Requires authNot measured4 / 22
Calendar Got Simplified

Create recurring events and send invites from your own address, in one sentence.

ProductivityFile & docs

Requires authNot measured4 / 22
Calensync

Manage Google, Outlook & Apple calendars and create private sync rules from chat.

ProductivityCommunication & messaging

Requires authOutdated checkNot measured4 / 22
Calfeed

Turn a written schedule into a live calendar link people subscribe to in Apple, Google, Outlook.

ProductivityCommunication & messaging

Requires authNot measured4 / 22Not checked yet
Caliu Notes

Read and write your Caliu notes from any MCP client: search, create, tag, remind, attach files.

ProductivityData access / search

Requires authNot measured4 / 22
Callbox

Your recorded calls and meetings: search transcripts, file recordings, save notes.

ProductivityData access / search

Requires authNot measured4 / 22
CalmLoop Task Manager

Manage tasks, Focus Zone, notes, projects, and task history from compatible AI assistants.

ProductivityFile & docs

Requires authNot measured4 / 22Not checked yet
Caly

Scheduling: event types, open slots, and booking, rescheduling or cancelling meetings in Caly.

ProductivityFile & docs

Requires authOutdated checkNot measured4 / 22
canhelpto support inbox

Customer support for MCP servers: work your tickets from Claude or any MCP client. Service key auth.

ProductivityCommunication & messaging

Requires authNot measured4 / 22Not checked yet
CareerCorner

Your personal career coach. Scanning jobs for you, daily.

ProductivityFile & docs

Requires authNot measured4 / 22
CareerGenius

Fact-checked resume tailoring, cover letters, interview prep and keyword gaps for a job posting.

ProductivityFile & docs

Requires authNot measured4 / 22Not checked yet
CarryLeads

Find local businesses to pitch your product or service to, with ready email and SMS drafts.

ProductivityCommunication & messaging

Requires authNot measured4 / 22
Chargezen SmartyTap

SmartyTap email and text flows, campaigns, surveys, WhatsApp templates, people and the inbox.

ProductivityCommunication & messaging

Requires authNot measured4 / 22
ChatMaxima

Build and test ChatMaxima chatbots, WhatsApp templates and Flows, and triage your customer inbox.

ProductivityCommunication & messaging

Requires authNot measured4 / 22
Chatwoot MCP Server and API by Cotlet

Chatwoot customer support inbox MCP server: list conversations, reply to conversation.

ProductivityCommunication & messaging

Requires authOutdated checkNot measured4 / 22
Checkmails — Email Verification

Verify email deliverability by SMTP. Catch-all/disposable/role detection. EU-hosted, GDPR-ready.

ProductivityCommunication & messaging

Requires authNot measured4 / 22Not checked yet
Cherry Notes

Tasks that outlive the chat. Capture features and tasks on your phone; your AI agent picks them up.

ProductivityFile & docs

Requires authNot measured4 / 22

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