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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2946 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
Blocks

AI-native training platform for cyclists and runners: calendar, rides, readiness, sourced science.

ProductivityFile & docs

Requires authOutdated checkNot measured4 / 22
BoardMark

Issue board for teams: find, create and move issues, run sprints, comment and keep project docs.

OtherOther

Requires authNot measured4 / 22
Bookmax

Official Bookmax MCP server: search and save bookmarks, read notes and docs from AI assistants.

ProductivityData access / search

Requires authOutdated checkNot measured4 / 22
BootForm

Form backend for static sites: create forms, route submissions to email, Discord, Slack or webhooks.

ProductivityCommunication & messaging

Requires authNot measured4 / 22
bootkey

Boot and run AI agents that live on their own Linux server, with their own IP, email and memory.

ProductivityCommunication & messaging

Requires authNot measured4 / 22
bordeaux.guru — Bordeaux en primeur & terroir

First-hand Bordeaux en primeur tasting notes, appellation climate, phenology and terroir.

ProductivityFile & docs

Requires authNot measured4 / 22Not checked yet
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
Brainiall Documents

High-fidelity PDF to structured Markdown conversion and document field extraction.

OtherFile & docs

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

Breezeway vacation rental operations MCP server: list tasks, create task, assign task.

TravelData access / search

Requires authOutdated checkNot measured4 / 22
Brújula

Weekly planner and life organizer: tasks, week, expenses, lists, projects, recipes. In Spanish.

OtherOther

Requires authOutdated checkNot measured4 / 22
BuildBase Console

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

ProductivityCommunication & messaging

Requires authNot 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
Bynn

Document fraud detection for manipulated, fake and AI-generated PDF and image documents.

MediaFile & docs

Requires authOutdated checkNot measured4 / 22
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
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
Campaign Monitor MCP Server and API by Cotlet

Campaign Monitor email marketing for brands MCP server: get campaign report, list who did not open.

Marketing & SalesCommunication & messaging

Requires authOutdated checkNot measured4 / 22
Carbon MCP

Explore Carbon docs, components, tokens, icons, charts, and code examples.

Developer ToolsCode & DevOps

Requires authOutdated checkNot measured4 / 22
CarryLeads

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

ProductivityCommunication & messaging

Requires authNot measured4 / 22

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