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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2945 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
Anteproof

Commit-pace and release probabilities for open-source repositories. Docs: anteproof.com/docs

OtherOther

Requires authNot measured4 / 22Not checked yet
Any.do

Read and update a signed-in user's Any.do tasks, lists, reminders, calendar and team boards.

ProductivityFile & docs

Requires authOutdated checkNot measured4 / 22
Anyreach

Build AI agents that handle calls, web chats, and email — and automate everything around them.

ProductivityCommunication & messaging

Requires authNot measured4 / 22
Apdf — PDF Tracking & Analytics

PDF engagement layer for apps and agents: tracking links, read analytics, and a full PDF toolset.

Data & AnalyticsFile & docs

Requires authOutdated checkNot measured4 / 22
APIVerve

380+ live data, validation and utility APIs in one MCP server: IP, DNS, email, FX, weather and more.

Data & AnalyticsCommunication & messaging

Requires authOutdated checkNot measured4 / 22
ARC-Relay Email

Checks any domain's DMARC, SPF, MX and DKIM setup, scores it 0-100, and ranks the fixes.

ProductivityCommunication & messaging

Requires authNot measured4 / 22Not checked yet
Arcane Core

Read and edit a tabletop campaign's notes, characters, initiative and skills in Arcane Core.

Marketing & SalesData access / search

Requires authNot measured4 / 22Not checked yet
Arcdeck

Create consulting-style presentation decks (editable PowerPoint) from a topic or notes.

ProductivityFile & docs

Requires authNot measured4 / 22
ARCH-Insight

Search and update ARCH-Insight: architecture fact sheets, applications, tickets, tasks, incidents.

Developer ToolsData access / search

Requires authNot measured4 / 22
Arez AI

Jobs, estimates, tasks, team messages and money owed for small US contractors.

OtherCommunication & messaging

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

AroFlo trades job management MCP server: list tasks, create task, schedule technician.

Developer ToolsCode & DevOps

Requires authOutdated checkNot measured4 / 22
ArtifactBridge

Search team documents and propose governed-document changes for human review and approval.

OtherFile & docs

Requires authNot measured4 / 22
AskRobots

Your AskRobots account for AI agents: tasks, notes, files, contacts, time, mail and bookkeeping.

Finance & CryptoPayments & trading

Requires authNot measured4 / 22Not checked yet
assign2me

Manage tasks, projects and client collaboration in assign2me from your AI assistant.

Developer ToolsCode & DevOps

Requires authNot measured4 / 22
Assindo

AI phone assistant: real calls to businesses for you, plus tasks, posts and research.

OtherOther

Requires authNot measured4 / 22
Astravue MCP

Manage projects, tasks, time tracking, and team collaboration through natural language.

Developer ToolsCode & DevOps

Requires authOutdated checkNot measured4 / 22
Atalaya

Work management with Spec-Driven Development: tasks, sprints and SDD approvals for coding agents.

Developer ToolsCode & DevOps

Requires authNot measured4 / 22Not checked yet
Atlas Red mind maps

Build and edit real mind maps from a chat: brainstorm, plan, organise notes. Free, never metered.

ProductivityFile & docs

Requires authNot measured4 / 22
Atomiq

Read email marketing reports, segments and customers, and draft campaigns for review.

Marketing & SalesCommunication & messaging

Requires authNot measured4 / 22
Atrix AI

Work, docs, CRM, calendar, chat and hiring for small teams. OAuth 2.1 with scoped, audited access.

ProductivityFile & docs

Requires authOutdated checkNot measured4 / 22
Atwork

Connect Claude, ChatGPT or any MCP client to your Atwork sheets, tasks, pages and dashboards.

Data & AnalyticsAI / LLM tooling

Requires authOutdated checkNot measured4 / 22
Audio Delivery Network

AI-manageable audio CDN: upload, transcode, normalize, stream & deliver audio, plus grounded docs.

MediaAI / LLM tooling

Requires authNot measured4 / 22Not checked yet
AudioMap

Search, read and ask questions about your AudioMap transcripts, notes, speakers and clips.

ProductivityData access / search

Requires authNot measured4 / 22
Aurentia

Your Aurentia workspace — projects, CRM, tasks, deliverables — in Claude, Cursor or any MCP client.

Marketing & SalesData access / search

Requires authOutdated checkNot measured4 / 22

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