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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2949 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
Ragently CRM

Ragently CRM: companies, contacts, deals, tasks and notes for your AI assistant.

ProductivityFile & docs

Requires authOutdated checkNot measured4 / 22
Ranla

AI growth engineer for software businesses: SEO pages, AI answers, Reddit replies, lifecycle email.

ProductivityCommunication & messaging

Requires authNot measured4 / 22
Ranya

The planner you can call: your tasks, calendar, notes, goals and habits, in your AI assistant.

ProductivityFile & docs

Requires authNot measured4 / 22
Raq.com

Give your AI agent 75+ business tools: tasks, projects, CRM, forms, E-Sign, team comms, automations.

Marketing & SalesAutomation & workflows

Requires authNot measured4 / 22
Rawa

Read and update your Rawa brands, creatives, calendar and performance; generate and publish.

ProductivityFile & docs

Requires authNot measured4 / 22
ReachKee MCP

B2B people search, AI lead scoring and work-email lookup. 15 tools.

ProductivityData access / search

Requires authNot measured4 / 22Not checked yet
Reachkit

Find B2B leads with verified emails, write sequences, and launch and track cold email campaigns.

Marketing & SalesCommunication & messaging

Requires authNot measured4 / 22
Readlink

Manage your Readlink book library: add books, track reading, rate, notes, highlights, shelves.

ProductivityFile & docs

Requires authNot measured4 / 22
Realastat

Real estate deal analysis from chat: rental underwriting, buy-box matching, deal library, docs.

Real Estate & PropertyData access / search

Requires authNot measured4 / 22
Really Fast CRM

Sales CRM for small teams: see what's due today, look up deals and contacts, add notes and tasks.

ProductivityData access / search

Requires authNot measured4 / 22
Recl

Search, read and review your saved videos, links and notes; save links and ask your library.

MediaData access / search

Requires authNot measured4 / 22
Redbooth

Manage Redbooth tasks, task lists, comments, tags and files from Claude and other AI assistants.

Developer ToolsAI / LLM tooling

Requires authNot measured4 / 22
redirect.pizza

Manage URL redirects, domains, email forwards, and analytics on redirect.pizza.

Data & AnalyticsCommunication & messaging

Requires authNot measured4 / 22Not checked yet
redm-mcp

RedM / RDR3 docs MCP server: native lookups, semantic search, VORP, RSGCore, oxmysql.

Developer ToolsData access / search

Requires authOutdated checkNot measured4 / 22
Relay

Run any Relay model (image, video, audio, LLM), poll tasks, upload files and search Relay's docs.

MediaData access / search

Requires authNot measured4 / 22Not checked yet
Relayger: AI agent messaging

AI agent messaging with durable inboxes, contacts and tasks. Connect through MCP with OAuth.

ProductivityCommunication & messaging

Requires authOutdated checkNot measured4 / 22
RelayLink

Your AI talks to theirs: send approved briefings to another person's assistant or plain email.

ProductivityCommunication & messaging

Requires authNot measured4 / 22
Relayz

Notes your AI assistants share: dot, Muse, Grok Bot, Duet and more. Share them with people too.

ProductivityFile & docs

Requires authNot measured4 / 22
Reline

Search and read your meeting notes, transcripts and action items, and create notes in Reline.

ProductivityData access / search

Requires authOutdated checkNot measured4 / 22
RemainAI

Your notes, todos, feeds and rituals, filed under your own tags, open to any AI agent.

ProductivityFile & docs

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

reMarkable digital handwriting and reading MCP server: list files and folders, import PDF or EPUB.

Developer ToolsFile & docs

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

RemNote study notes and flashcards MCP server: search notes, create note, create flashcards.

ProductivityData access / search

Requires authOutdated checkNot measured4 / 22
RemoteFarm

Read and update RemoteFarm records for crops, livestock, bees, money and tasks from a chat.

OtherOther

Requires authNot measured4 / 22
Rendlet PDF

HTML or JSON templates (invoice, itinerary) to PDF. Free plan: 100 documents/month.

Finance & CryptoFile & docs

Requires authNot measured4 / 22Not checked yet

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