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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1620 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
Siftsmith Company Signals

Open jobs from Workday, careers pages and ATSes, plus hiring, tech, intent, DMARC and launch signals

ProductivityFile & docs

Requires authNot measured4 / 22Not checked yet
Sign PDF

Send a PDF, a Google Doc or Markdown for e-signature from chat, and get the signed PDF back.

OtherFile & docs

Requires authNot measured4 / 22
Signal not Noise

AI-driven daily-focus todo app on your phone (max 3/day). View & add todos from any MCP client.

ProductivityFile & docs

Requires authNot measured4 / 22
SignatureAPI

E-signature API: send documents for signature, track envelopes, get signed files.

Developer ToolsFile & docs

Requires authOutdated checkNot measured4 / 22
SignThis

Track and send e-signature documents. Needs a SignThis API key; read-only by default.

OtherFile & docs

Requires authNot measured4 / 22Not checked yet
SimplePDF

Find your PDF forms, read their fields, prefill them for review and retrieve submissions

Developer ToolsFile & docs

Requires authOutdated checkNot measured4 / 22
SiteRender API

Fetch public web pages live and get clean Markdown, text or HTML.

OtherFile & docs

Requires authNot measured4 / 22Not checked yet
Skillforge Render API

Screenshot, PDF, OG-image, and page extraction (markdown/JSON) over MCP. Bearer key or x402.

MediaFile & docs

Requires authNot measured4 / 22Not checked yet
SkipCalls

Manage your SkipCalls AI receptionists, calls, contacts, and calendars.

ProductivityFile & docs

Requires authOutdated checkNot measured4 / 22
SlideDrift

Turn notes, articles and ideas into LinkedIn carousels in your brand, then export or schedule them.

ProductivityFile & docs

Requires authOutdated checkNot measured4 / 22
SlideScript

Turn PDF slide decks into timed, word-for-word speaking scripts; edit and download them in chat.

OtherFile & docs

Requires authOutdated checkNot measured4 / 22
Slipstack PDF

Generate invoice and receipt PDFs from JSON. Agent-callable document API with a free demo quota.

Finance & CryptoFile & docs

Requires authNot measured4 / 22Not checked yet
SnapRender

Give AI agents eyes: screenshot any URL as PNG, JPEG, WebP or PDF, or read it as markdown.

Developer ToolsFile & docs

Requires authOutdated checkNot measured4 / 22
SolarScope

Screen US sites for solar: sun, grid distance, FEMA flood risk. Save sites, create PDF reports.

OtherFile & docs

Requires authOutdated checkNot measured4 / 22
Solotet

A shared board your Claude projects read and write: handoffs, @mentions, pinned notes.

ProductivityFile & docs

Requires authOutdated checkNot measured4 / 22
Sort Feed

Sort Instagram by views, likes and outliers. Export to Google Sheets, Excel, CSV and JSON.

Developer ToolsFile & docs

Requires authOutdated checkNot measured4 / 22
SotoGoal

Goal-centered work: read and write goals, tasks, notes and attachments, and decide what to do next.

ProductivityFile & docs

Requires authOutdated checkNot measured4 / 22
Soycasero

Long-term rentals in Spain: upload the lease, get deadlines, IRAV/IPC rent updates and reminders.

ProductivityFile & docs

Requires authOutdated checkNot measured4 / 22
Sparks

Your Sparks idea notebook: read, create and organize notes, projects and subtasks.

ProductivityFile & docs

Requires authOutdated checkNot measured4 / 22
Spellar

Read your Spellar meetings, transcripts and action items from an AI assistant, and update them.

ProductivityFile & docs

Requires authNot measured4 / 22
Stash Squirrel

Todos, notes, bookmarks and calendar events — read, add, plan and tidy them.

ProductivityFile & docs

Requires authOutdated checkNot measured4 / 22
static.md

Markdown notes and whiteboards your AI agent can read and write.

ProductivityFile & docs

Requires authOutdated checkNot measured4 / 22
Stein Investments

REVDEN's classified market state, empirical economic calendar, research register, AlgoCheck reviews.

ProductivityFile & docs

Requires authNot measured4 / 22Not checked yet
Stori Candidate Intelligence

Read-only candidate intelligence — hiring questions answered from real interview transcripts.

ProductivityFile & docs

Requires authNot measured4 / 22

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