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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1604 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
No Errands Fax

Send a fax to any US or Canadian number from a PDF, quoted per page before sending.

OtherFile & docs

Requires authNot measured4 / 22Not checked yet
No Errands Sign

Get a PDF e-signed under ESIGN and UETA by up to 5 people, with a signed certificate.

OtherFile & docs

Requires authNot measured4 / 22Not checked yet
Nolizi Calendar

Free scheduling your agent can book through: live availability, booking, verification, cancel.

ProductivityFile & docs

Requires authNot measured4 / 22Not checked yet
Noozra

News from 70+ sites, community posts, and open jobs from company career pages

ProductivityFile & docs

Requires authNot measured4 / 22Not checked yet
NoteCube

Your NoteCube meeting and lecture recordings: search, read transcripts, and write cited documents.

ProductivityFile & docs

Requires authNot measured4 / 22
NOXI

Free AI presentation maker: create and edit decks, export PowerPoint and PDF, Arabic right-to-left

OtherFile & docs

Requires authNot measured4 / 22
Nutrient MCP

Hosted document tools for agents: extract, parse, classify, convert, OCR, sign, and redact.

Developer ToolsFile & docs

Requires authOutdated checkNot measured4 / 22
OCRmyPDF by pagespool

Hosted OCRmyPDF: add a searchable text layer to scanned PDFs and images, returned as PDF/A.

MediaFile & docs

Requires authNot measured4 / 22Not checked yet
Octopus.do

Read and edit octopus.do visual sitemaps: pages, blocks and review notes, as the signed-in user.

ProductivityFile & docs

Requires authOutdated checkNot measured4 / 22
Officely

Book desks and meeting rooms, see who's in the office, and manage your workplace in Officely.

ProductivityFile & docs

Requires authOutdated checkNot measured4 / 22
Offprint

Publish your agent's Markdown as shareable web pages with revision provenance and comments.

Developer ToolsFile & docs

Requires authOutdated checkNot measured4 / 22
Oncofiles

AI-powered medical document management for cancer patients. Google Drive, Gmail, Calendar via MCP.

HealthcareFile & docs

Requires authOutdated checkNot measured4 / 22
Onlay

Publish HTML or Markdown to a stable link; pull readers' edits and comments back to revise.

OtherFile & docs

Requires authOutdated checkNot measured4 / 22
OpenCityRecord

City council meetings, transcripts, votes, and documents for U.S. cities, with citations.

GovernmentFile & docs

Requires authOutdated checkNot measured4 / 22
OpenDocs

Write, organize and publish documentation sites, help centers and SOPs on OpenDocs.cloud.

OtherFile & docs

Requires authNot measured4 / 22
OpenDocs.cc

Publish Markdown as shareable documents, export PDF and Word, share, and send for e-signature.

OtherFile & docs

Requires authNot measured4 / 22
Orbit for Substack

The people behind your Substack writing: who is here, who is drifting, and what your notes did.

ProductivityFile & docs

Requires authOutdated checkNot measured4 / 22
Orinami

Mind maps with a full document in every node. Read, search and edit your maps from AI tools.

OtherFile & docs

Requires authNot measured4 / 22Not checked yet
PandaDoc MCP Server

PandaDoc MCP server for creating, sending, signing, and tracking PandaDoc documents.

Developer ToolsFile & docs

Requires authOutdated checkNot measured4 / 22
Papely

Generate PDFs from your Papely templates: one document, a ZIP batch, or emailed to recipients.

OtherFile & docs

Requires authNot measured4 / 22
Papersign

Prepare documents and send them for signature. Papersign is made by Paperform.

OtherFile & docs

Requires authNot measured4 / 22
PasteMD

Instant markdown sharing. Create, manage, and share documents with password protection.

Developer ToolsFile & docs

Requires authOutdated checkNot measured4 / 22
PDF to Markdown

Hosted MCP front door to the pdf2md API: checked PDF-to-Markdown requests, short-lived credential.

Developer ToolsFile & docs

Requires authOutdated checkNot measured4 / 22
PDF to Markdown (pdf2md.dev)

Hosted MCP server: convert PDFs to clean, LLM-ready Markdown with tables, formulas and OCR.

Developer ToolsFile & docs

Requires authNot measured4 / 22Not checked yet

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