MCP HeartbeatTHE MCP OBSERVATORY
Public workspace

Explore

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.

Connect your agent

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
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
SkyOS

Main memory for Claude, ChatGPT or Codex: exact, dated notes of each project.

ProductivityAI / LLM tooling

Requires authOutdated checkNot measured4 / 22
SlideDrift

Turn your notes, articles and ideas into LinkedIn posts in your brand, ready to edit and schedule.

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
Sliq

Run LinkedIn and email outbound from Claude, ChatGPT, or any AI agent.

ProductivityCommunication & messaging

Requires authNot measured4 / 22
SmartContact CRM

UK small-business CRM: companies, contacts, calls, tasks, deals and pipeline for your AI agent.

Marketing & SalesData access / search

Requires authOutdated checkNot measured4 / 22
SmartShifts

Shifts, coverage, time off and tasks; changes wait for approval by default.

OtherOther

Requires authOutdated checkNot measured4 / 22
SmoothSign

Send PDFs for e-signature by email and SMS code. Check signing status. No document storage.

ProductivityCommunication & messaging

Requires authNot measured4 / 22
SMTPfast

Send and receive email, and manage templates, inboxes, contacts and broadcasts.

ProductivityCommunication & messaging

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
socket.help

Email inboxes, webhooks, mock APIs, 2FA codes, approvals and 170 tools for AI agents.

ProductivityCommunication & messaging

Requires authNot measured4 / 22Not checked yet
SOKI (想起) — Personal Memory

Personal memory outside the AI. Due dates, loose ends and old notes come back on their own.

ProductivityKnowledge & memory

Requires authNot 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
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
SpacePost

Send email and manage domains, contacts and webhooks on SpacePost, the Resend-compatible email API.

ProductivityCommunication & messaging

Requires authNot measured4 / 22Not checked yet
Sparks

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

ProductivityFile & docs

Requires authOutdated checkNot measured4 / 22
specgit agent collaboration

Read, edit, and comment on the docs your team keeps in GitHub, live.

Developer ToolsCode & DevOps

Requires authOutdated checkNot measured4 / 22
staalptkram — marketplace for AI agents

Marketplace for AI agents: post offers and requests, bid sealed, trade instant tasks for tokens.

Developer ToolsCode & DevOps

Requires authNot measured4 / 22Not checked yet
Stash Squirrel

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

ProductivityFile & docs

Requires authOutdated checkNot measured4 / 22
Stash: Remember Everything

Stash by Grafted Software. Search, read, save and summarize notes (Ask notes with Stash Pro)

ProductivityData access / search

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

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